Globalisation, the World Economy,MNEs and Emerging markets Essay

Globalisation, the World Economy,MNEs and Emerging markets - Essay Example The policymakers influenced the regulatory regime under which both MNCs and local business partners operate. They focused in understanding how operation of multinational firms affects the economic development and nationwide wellbeing. The anticipation that FDI will benefit the local economy has motivated many governments to present striking incentive packages to attract investors. The underlying principle was that the social repayment of incoming FDI would surpass the personal benefits of FDI and investors would take into account only the latter when deciding over investment locations. The policy debate requires scientific evidence on how and to what extent, FDI will impact the local surroundings. The impact of MNCs on host countries was still not well understood, despite having the policy relevance. (Bhagwati, 2004; Bartlett et al. 2004) This paper will take into account one particular emerging economy and find out the factors that play crucial role in attracting MNCs towards it. Fo r this paper China has been chosen. Key factors that make the emerging market attractive to MNEs: China has a number of advantages that are country specific and are believed to be the major factors that work behind attracting FDI to the country. According to the researchers (Swain and Wang, 1995, Liu et al, 1997, Zhang, 2002) the factors that make the emerging market attractive to MNEs identified by FDI theories can be classified into three categories – Micro, Macro and Strategic factors The Micro factors relate to the advantages related to ownership of including product differentiation and the firm size. The Macro factors stress on the market dimension and the expansion of the host country, which is determined by GDP, GDP per capita, GNP or GNP per capita, as rapid economic expansion may generate large home markets and businesses. Other macro factors are taxes, political risk, rates of exchange, and so on. (Dicken, 2007) The Strategic factors relate to long-term determinants such as efforts to protect existing foreign markets, to spread out activities of firms, to uphold a grip in the host nation and to balance another type of investment. Since 1980, the GDP of China has grown between 8-9% per year. Researches were evident that the market size determined by GDP, GDP per capita, GNP, or GNP per capita has a major consequence on inward FDI. Speedy economic augmentation has created huge domestic markets and business prospects for foreign firms to invest in China. Swain and Zhang (1997) analyzed the data of FDI in China for the period of 1978-92 and have used GDP and real GDP growth rate. Liu et al (1997) using GDP, GDP growth, wages, reached to the conclusion that the size of market s the fourth most significant economic determinant for the pledged FDI in China. Their empirical results showed that the rate of growth of real GDP was significantly related to attracting MNEs in China. The direct and positive relationship between market size and inward FDI is also found by Zhang (2000) and Wei and Liu (2001) who showed that both US and Hong Kong MNEs were attracted by the large market size of China. This reflected the market-seeking motive of foreign firms to shift their focus from mainly export-oriented investments towards the Chinese markets. Therefore, most results of the empirical researches agreed with each other that market size was

OUTSOURCING HUMAN RESOURCES FOR BOROUGE Essay Example | Topics and Well Written Essays - 2500 words

OUTSOURCING HUMAN RESOURCES FOR BOROUGE - Essay Example The highlighted objectives of the research that led to the research include; examining the advantages for outsourcing human resource as compared to increasing the number of employees in the company, to determine some outsourcing models for worldwide competitive organizations as well as the local competitive organizations, obtain systems that use the models of outsourcing in determining the objectives as well as the aims of the business Other objectives are to examine the use of the models in both global and local competitive organizations and recommend the best and suitable strategies that the human resource need to employ in the organization to reduce the cost and increase the production and the profits of the business. The paper gives report of the research conducted to determine and obtain various objectives of the research. The report will cover the survey as well as the analysis of the information collected. One of the major aims of this research was to determine the significant, outcomes and the importance of outsourcing human resource in the organization. In the report, the advantages and the benefits of the strategy to the organization are expected to be more than the disadvantages. Clearly the research to obtain numerous objectives related to outsourcing human resource. This strategy has both benefits and shortcomings. Although the strategy has disadvantages, the benefits are more than the advantages. Comparing the method to other options such as hiring more employees, the outsourcing model appear to be more beneficial to the organization. Therefore, it is advisable that the human resource department use and adopt the models of outsourcing strategies in the businesses. The human resource department has various functions in the company. They handle the payroll of the employees as well as the filing of tax. The department is also responsible for ensuring health and the benefits of the

Second Punic War Could Have Been Avoided History Essay

Second Punic War Could Have Been Avoided History Essay I was born as Publius Cornelius Scipio Africanus, I am also known as Scipio Africanus, otherwise referred to as Scipio the Elder. I was the statesman of the Roman Republic and later a general during the Second Punic War. I defeated Hannibal during the final battle of the Second Punic War which took place at Zama. The victory at Zama earned me the name the Roman Hannibal, the agnomen Africanus; I am as well recognized as the best commander-in-chief in military history. The Second Punic War took place from 218 BCE to 201 BCE. The second Punic war could have been avoided, but since Carthage felt that the First Punic War was concluded on harsh terms, they ensure that another war followed in 218BC, approximately twenty three years after the end of the First Punic War. I believe that the treaty was fair, but since Hannibal hated Rome he believed that the treaty was complicated, and had several political results. Since Carthage violated the treaty, we asked them to totally relinquish Sicily and the Aegadian Islands, which was positioned on west of it, in addition to the tiny islands that located between Sicily and Africa. The most instant political consequence of the First Punic War was the collapse of Carthages naval authority.   They as well had to return all our prisoners of war without ransom to Rome; nevertheless they had to make a huge payment for the Carthaginians. The Carthaginians were not allowed to hit Syracuse and her associates, and the as sociates of both Rome and Carthage were not permitted to have conficts on each other. An undersized group of Islands, Aeolian Islands which is north of Sicily as well as Ustica that had earlier belonged to Carthage were to be reassigned to Romes control (Tim, Boris and Philip, 10).    We equally had great powers of the Mediterranean; we had friendly agreements with each other that is, Rome and. Nevertheless, tensions increased as the economic interests of every party commenced to leave no space for the other. Whereas Carthage was larger and better-off with an excellent Navy, we had a strong government supported by inexhaustible land mass of citizens. I believe that conflicts particularly took place because of a clash of economic interests between Carthage and our country Rome. The Sicilian War as well referred to as the First Punic War started in 264BC because of both Rome and Carthage wanted to have exclusive power over Sicily. We became victorious in the Aegates Islands following twenty three years of war, by struggling to match Carthages tough naval power.   We decided the terms of the treaty ensuring that there was peace between Rome and Carthage (Howard, 16). Hannibal Barcas father imposed hatred in him when he was still young which made him dislike Rome. When Hannibal felt that Rome violated an accord which his brother-in-law, Hasdrubal the Fair of Carthage signed with the Romans at the end of the First Punic War, he decided to plot a Romans attack. Hannibal initiated the war, which could have been avoided through negotiations and understanding, between us the Romans and Carthage (Richard, 64). We both upheld the Ebro Treaty shortly after the Romans defeated Hamilcar Barca of Carthage in the First Punic War. This treaty signed at the end of the First Punic War enabled carthage to patrol and build up any land towards the south River Ebro, near the northeast of Barcelona, nevertheless the treaty did not allow the Carthaginians to cross River Ebro. As a roman leader, I suggested I wanted the treaty to stop land acquisition in southern Ebro, and thought it was generous to grant Carthage the right to use any region at all not previously under Carthaginian control. Hannibal felt that the Ebro treaty restricted his right to use north of the Ebro which he believed was amongst the unconquered territories. We could have settled this matter without any fighting but Hannibal detested Rome so much that he was not ready to have any peace talks (Tim, Boris and Philip, 27). As Romans we were afraid that Carthage was on the limit of breaking the Ebro treaty and as a result Hannibal would gain control of Carthages Iberian venture, that is why we chose to violate the Ebro Treaty first and united with Saguntum, a city which is south of the Ebro, I afterward expelled Carthaginian representatives from the city. Consequently the young Carthaginian leader Hannibal laid barricade to the town, which collapsed after eight months. Even though Saguntum was located in a good position in south of the Ebro, we still thought that by Hannibal attacking the town, which had sensitive relations with our country, was Carthages part of violating the Ebro Treaty, that is why we sent various officials to Carthage, commanding reparations. Carthaginian senate backed Hannibal this time despite having had many differences. Carthage sent back my roman people with the message that they supported their young commander Hannibal, and they felt that the treaty was totally voided. Hannibal had previously been in command of Carthages Iberian efforts, nevertheless he had been setting up a military invasion of the Mediterranean for approximately two years before his ultimate siege of Saguntum, and consequently he twisted that Iberian coastal town into a Carthaginian base, and chose to set his implement his plans (Richard, 36). Carthages prime foundation in Europe at the era, was New Carthage which was west of Saguntum inside Iberia, moreover, after the disbanding of the Ebro Treaty as well as the siege of Saguntum, this is where Hannibal Barca assembled his men and prepared to protest through Gaul , and downward through the Alps to attack us. Even though he was militarily very skilled, and was competent to secure major conquests, for instance at the Battles of Trebia as well as Cannae we were just too strong for Carthage. Hannibal returned to Carthage defeated, furthermore the citys control of Iberia in addition to many other countries was handed us. In conclusion, I believe that the Second Punic War could have been avoided, as the Rome general, I was ready to hold peace talks with Hannibal but he was not willing. Under the circumstances negotiation could not have occurred and as a consequence, there was no mutual understanding between us. The nullification of the Ebro Treaty between Rome and Carthage was the main cause of The Second Punic War. Carthage pushed us to first violate the Ebro Treaty they could have chose to communicate to us but instead the reacted violently, the Second Punic War could not have occurred.

The 1962 Salem Conspiracy Essay -- essays research papers

During the year of 1692, the small town of Salem seems to have been in a state of panic and confusion. The book Witchcraft at Salem, by Chadwick Hansen, is about the witchcraft conspiracies the town has experienced. Hansen goes on to explore the truthfulness of the "possessed" young girls. The reason why Hansen wrote the book is to try to set straight the record of the witchcraft phenomena at Salem, Massachusetts, in the year 1692, about which much has been written and much misunderstood. Hansen has a very respectable education. He graduated and obtained a Bachelors degree from the much respected Yale University. He went on to continue his education and obtained a Ph.D. from the University of Minnesota. Hansen has had many teaching jobs throughout his life. From 1955-60 Hansen was an assistant professor at Pennsylvania State University. From 1965-70 he was a Professor of English and American studies at the University of Minnesota. His most accomplished teaching job was whe n he was a professor and Director of American Civilization at the University of Iowa. To help with his teaching he was in many history groups. He was a member of the Modern Language Association, American Studies Association, and American Historical Association. Hansen has written numerous books including, The American Renaissance: The History and Literature of an Era, and Modern Fiction: Form and Idea in the Contemporary Novel and Short Story. Hansen has many qualifications to write a historical piece during the American Revolution time period. In the summer of 1692, many strange and out of the ordinary events were taking place in Salem. Several young girls and young women began to have strange fits. They were eventually examined by doctors. "Dr. William Griggs examined Elizabeth Paris and Abigail Williams and came to the conclusion that the evil hand is upon them." With this analysis he was informing the patients that they were the victims of witchcraft. Before the girls were examined many members of the Salem community came to the conclusion that witchcraft was the reason the girls were having the strange fits. Following this was a series of hearings and trials, which resulted in the death of 20 people. This was not an uncommon practice used during that time. â€Å"Approximately nine hundred witches were burned in the single city of Bamberg, a... ...I believe it provided the reader with a better understanding of the different reasons the girls were acting in the nature they did. Overall I enjoyed reading Witchcraft at Salem. Hansen brought new ideas while challenging the old ones in a very enthusiastic manner. Many scholars have differing views on what happened at Salem. Some believe that girls were lying, while some believe that a physical ailment was the cause. This book was great for a reader who wanted to find several opinions on what took place in Salem. If the reader wanted to know just the basic facts of the Salem Witch Trials then I would not recommend this book. Witchcraft at Salem requires a general knowledge of what happened during the witch trials because it goes very in depth. This book might be confusing to someone who slept in high school history or english and knows nothing of what happened at Salem during 1962. Erikson, Kai T. â€Å"Were some of those witches real?† The New York Times. 6 July 1969, BR5. Hansen, Chadwick. Witchcraft at Salem. New York: George Braziller, 1969. Marion A. Knight, ed. â€Å"Chadwick Hansen.† Book Review Digest. New York: The H. W. Wilson Company, 1927, 273.

Alternative Fuels: The industrial gas turbine

Investigation of alternative fuels for industrial gas turbines Tamal Bhattacharjee, Paul Nihill, Cormac Bulfin, Ishank Arora Contents 1. Abstract4 2. Introduction4 3. Hydrogen5 3. 1Production5 3. 1. 1Steam Reforming of Hydrocarbons5 3. 1. 2Water Splitting5 3. 1. 3Gasification of Waste & Biomass to produce syngas6 3. 1. 4The process7 3. 1. 5Application to industrial gas turbines8 4. Methanol9 4. 1Abstract9 4. 2Introduction9 4. 3History10 4. 4Manufacturing Process10 4. 4. 1 Production of methanol from synthesis gas10 4. Industrial Process11 4. 5. 1STEP-1: Feed Production11 4. 5. 2STEP-2: Reforming11 4. 5. 3STEP-3: Methanol Synthesis12 4. 5. 4STEP-4: Methanol Purification12 4. 6How it works on a gas turbine12 4. 7Feasibility15 4. 8Advantages & Disadvantages16 4. 9Conclusion17 5. Power Alcohol17 5. 1Introduction17 5. 2Chemistry18 5. 3Production18 5. 3. 1Ethanol from sugar cane18 5. 3. 2Fermentation18 5. 3. 3Distillation19 5. 3. 4Fractional Distillation19 5. 4Air pollution21 5. 5Advantage s23 5. 6Disadvantages23 6. References24 1. AbstractThe industrial gas turbine is a key part of modern electricity generation. In 1998 15% of electric power was produced by gas turbines. Due to their efficiency, compactness, reliability and relatively low capital cost 81% of new electric power demand will be met by industrial gas turbines. Gas turbines must meet very strict NOx CO and CO2 regulations. (GL Juste 2006). As the popularity of gas turbines and combined heat and power generation plants increases research has turned to cheaper and more environmentally friendly fuels for gas turbines.Methane C2H4 is the main fossil fuel used in gas turbines today but with increased regulations on carbon emissions combined with the increasing cost of fossil fuels, research is turning to alternative fuels which may power gas turbines into the future. This literature review explores potential liquid and gas alternative fuels for industrial gas turbines along with some of the latest research in the area and some examples of the successful industrial applications. 2. IntroductionThe increasing cost of fossil fuels, the fact that they are a finite resource and the environmental effects of their combustion means that research into alternative fuels is one of the largest and most varied areas of scientific investigation in progress today. As with all scientific research, some will be successful and form the basis of future energy production and some will be either too inefficient or impractical to be implemented in industry. It is interesting to note that some of the methods which seemed impractical even 10 years ago are now being introduced owing to the increasing cost of fossil fuels.Fuels derived from biomass and gasification of sewage sludge and municipal waste and some methods of hydrogen fuel production appear to hold the most promise. â€Å"Different global energy scenario studies indicate that in India biomass may contribute much more: up to 30% of the energy supply b y 2100† (K. K. Gupta et al 2010) Gas turbines and combined heat and power (CHP) systems are at the forefront of future European strategies on energy production with current efficiencies for combined cycle facilities above 60%. â€Å"The main CHP targets are the reduction of the overall costs and the development of above 40 kW biomass-fired systems†¦..Gas turbines enjoy certain merits relative to steam turbines and diesel engines. They have high grade waste heat, lower weight per unit power, dual fuel capability, low maintenance cost, low vibration levels, low capital cost, compact size, short delivery time, high flexibility and reliability, fast starting time, lower manpower, and have better environmental performance. † (P. A. Pilavachi et al 2000) This project focuses on alternative fuels as applied to industrial gas turbines owing to their projected increase in popularity in the short to medium term at least. 3. Hydrogen 3. 1Production 3. 1. Steam Reforming of Hy drocarbons The bulk of hydrogen fuel production is currently via steam reforming of natural gas this process involves the reaction of natural gas or liquid hydrocarbons with high temperature steam to produce varying amounts of CO and H2. Steam reforming of hydrocarbons does not eliminate CO2 but it greatly reduces the amount which is discharged into the atmosphere. Steam reforming of hydrocarbons is an efficient way of reducing CO2 emissions. In addition to the H2 produced during gasification a low temperature gas shift reaction with the remaining carbon monoxide can produce further H2.The process of steam reforming natural gas along with the gas shift reaction are governed by the chemical equations below. (K. K. Gupta et al 2010) Steam Reforming: CH4 + H2O – CO + 3H2 ? H = +251 kJ/mol Gas Shift: CO + H2O – CO2 +H2 ? H= -42 kJ/mol (K. K. Gupta et al 2010) The release of CO2 can be completely eliminated in a large plant where the CO2 is captured and injected into an oil or gas reservoir. It is currently disputed between scientists whether or not the production of H2 in this way releases more CO2 than directly burning fossil fuels. 3. 1. 2Water SplittingThere is currently a lot of research concerning the splitting of water to produce H2. This method is yet to find industrial application as it takes a lot of energy to split water and the only sustainable method is the use of renewable technologies to provide the energy. The hydrogen is more likely to be used as a storage medium when the power generated by renewable technologies is not required. An example of this would be the storage of power from a wind turbine during the day. There is a lot of very interesting research into water-splitting with many methods being explored simultaneously.Thermo chemical water splitting using solar power is an interesting option. Direct thermal water splitting is impractical due to the energy requirements to heat the water to 25000K. But if the water is reacted with metal oxides and redox materials it can be achieved at a much lower temperature. The oxygen and hydrogen are released at different stages eliminating the need for separation. This process can be conducted in a cycle that produces H2 more efficiently from solar radiation. 3. 1. 3Gasification of Waste & Biomass to produce syngasA Practical Example of waste to energy conversion is the Pyromex waste to energy facility in Germany. The Pyromex system is currently being used successfully to gasify industrial waste in a purpose built plant in Munich Germany. Due to the fact there are no gaseous emissions from the system there is no need for the construction of smoke stacks and the system is considered separate to incineration by EU authorities. Emissions from the plant are in the form of solid sand like dry waste. The waste composition is tabulated below and shows how far below allowable limits the process is.The raw material in the process is otherwise unrecyclable waste products and the system can treat sewage sludge, plastics, fly ash from power plants and various other waste products. The system has the potential to be a major contributor to the Hydrogen Economy. The prototype plant working on a throughput of 25 ton/day had the potential to produce approximately 2150 kWh by a combined heat to electricity and syngas engine generator system. If used in combination with an industrial gas turbine there is no doubt that owing to the greater efficiency this power output could be improved.Fig. 1 – Exhaust gas emissions (Pyromex ®) 3. 1. 4The process The material to be gasified is introduced into the slowly turning reactor through a two stage tank system. With this setup an oxygen free environment can be ensured inside the reactor pipe, where the conversion of the organics to syngas takes place at over 1000 °C. The produced gas is then cleaned with a simple acid and an alkaline scrubber. Even though the temperatures within the reactor are far above 1000 °C, the surface remains cool enough to be touched by hand.The PYROMEX gasification is a closed circuit process and therefore no emissions are released into the environment. The process flow chart below gives a better understanding of the workings of the plant. This process can be easily scaled. And there are numerous plants completed and in the process of construction in Germany and the U. S. Fig. 2 – Gasification process of producing syngas from waste & biomass (Pyromex ®) 3. 1. 5Application to industrial gas turbines Once the hydrogen has been produced it can be mixed with carbon monoxide which can also be produced efficiently using solar power.This syngas can be used in an Industrial gas turbine with some modifications to the fuel nozzle system and careful control of the fuel air ratio to produce electricity. In the case of liquid fuel turbines the hydrogen can be converted to various hydrocarbons using the Fischer-Tropsch process. The use of hydrogen in a gas turbine is a r elatively new concept with the use of high hydrogen content syngas becoming an attractive area for research. Unfortunately the use of hydrogen rich gas in a conventional gas turbine involves some tweaks to the ystem. The natural gas lean-premixed combustors have to undergo some modifications if fed with hydrogen rich fuels due to the combined effect of hydrogen shorter auto-ignition delay and faster flame speed. (Paulo Gobbato et al 2010) One of the routes with the highest potential is the pre combustion route utilizing coal in an integrated gasification and combine cycle (IGCC). The challenge in utilizing hydrogen rich fuel is principally associated with its reduced auto-ignition delay time, which can be addressed in one of three approaches: 1.De-rating the engine – allowing the same mixing time by increasing the auto-ignition delay time through altering the characteristics of the vitiated air (i. e. the inlet temperature of the flow to the SEV). 2. Decreasing the reactivity of the fuel – i. e. by dilution with an inert gas. 3. Modifying the hardware – either to reduce the mixer residence time in line with the reduced auto ignition delay time or develop a concept which is less influenced by the reactivity of the fuel. (Nils Erland et al 2012) 4. Methanol 4. 1Abstract 5.When methanol is intended to be used as fuel for gas turbine, it is very important to enhance overall thermal efficiency of the gas turbine system, and to make it competitive with conventional oil or gas fuels. There are many ways to accomplish this. Combined cycle is not, however, a proper way, as this could also be applied to conventional fuel. Noting the unique characteristic of methanol, the steam reforming regenerative cycle was investigated by many institutions. In this scheme, wasted heat of the gas turbine exhaust gas is transferred to reformed gas.And it is recycled back to the gas turbine as a part of fuel, thus resulting in increased overall efficiency of the gas turbine. Thermal decomposition of methanol is also an endothermic reaction and may be applied to the regenerative cycle. In either case, however, only a part of the waste heat is recovered. Hence the hybrid system with combined cycle was proposed to achieve additional heat recovery. But this is a complex system. 4. 2Introduction 6. Methanol, also known as methyl alcohol, wood alcohol, wood naphtha or wood spirits, is a chemical with the formula CH3OH. . 8. Fig. 3 – Chemical formulation of Methanol 9. Methanol can be used as alternative fuel in gas turbine. Methanol is made from natural gas, coal, and biomass. This was one of the older alternative fuels. Like Ethanol, Methanol is very good for blending with gasoline to replace the harmful octane enhancers. The benefits of using Methanol are that it reduces emissions, which has a significant effect on bettering the environment. Methanol can easily be blended with gasoline. It also has a lower risk of flammability than normal g asoline.Another benefit of Methanol is that it is made from domestically renewable sources. Methanol can also be used to make the octane enhancer MTBE. Another huge possible benefit of Methanol is that it can be made into hydrogen. 10. 4. 3History 11. Methanol has been tested as a gas turbine fuel in the U. S. In 1974, a 12-hour test was conducted by Turbo Power and Marine in a 20 MW gas turbine at the Bayboro Station of Florida Power Corporation. The methanol was fired as a liquid. NOx emissions were 74% less than those from No. 2 Distillate, and CO emissions were comparable (Power 1979).In 1978 and 1979, EPRI and Southern California Edison Company sponsored a 523-hour test at SCE’s Ellwood Energy Support Facility, using one half of 52 4. 4Manufacturing Process 4. 4. 1 Production of methanol from synthesis gas 12. Carbon monoxide and hydrogen react over a catalyst to produce methanol. Today, the most widely used catalyst is a mixture of Cu (Copper), zinc oxide, and alumina f irst used by ICI in 1966. At 5–10 M Pa (50–100 atm) and 250  °C, it can catalyze the production of methanol from carbon monoxide and hydrogen with high selectivity (>99. 8%): 13. CO + 2 H2 > CH3OH†¦..It is worth noting that the production of synthesis gas from methane produces three moles of hydrogen gas for every mole of carbon monoxide, while the methanol synthesis consumes only two moles of hydrogen gas per mole of carbon monoxide. One way of dealing with the excess hydrogen is to inject carbon dioxide into the methanol synthesis reactor, where it, too, reacts to form methanol according to the equation: 14. CO2 + 3 H2 > CH3OH + H2O. 15. Some chemists believe that the certain catalysts synthesize methanol using CO2 as an intermediary, and consuming CO only indirectly. 6. CO2 + 3 H2 > CH3OH + H2O; where the H2O byproduct is recycled via the gas shift reaction: 17. CO + H2O > CO2 + H2, 18. This gives an overall reaction, which is the same as listed above. 19. CO + 2 H2 > CH3OH 4. 5Industrial Process Fig. 4 – Industrial process for creating Methanol 4. 5. 1STEP-1: Feed Production 20. The two main two feed stocks, natural gas and water, both require purification before use. Natural Gas contains low levels of sulphur compounds and undergo a desulphurization process to reduce, the sulphur levels of less than one part per million.Impurities in the water are reduced to undetectable or parts per billion levels before being converted to steam and added to the process. If not removed, these impurities can result in reduced heat efficiency and significant damages to major pieces of equipment. 4. 5. 2STEP-2: Reforming 21. It is the process which transforms the methane and the steam to intermediate reactants of hydrogen, carbon-dioxide and carbon monoxide. Carbon dioxide is also added to the feed gas stream at this stage to produce a mixture of components in the ideal ratio to efficiently produce methanol.This process is carried out in a Reform er furnace which is heated by burning natural gas as fuel. 22. Reaction: Reaction: 4. 5. 3STEP-3: Methanol Synthesis 23. After removing excess heat from the reformed gas it is compressed before being sent to the methanol production stage in the synthesis reactor. Here the reactants are converted to methanol and separated out as a crude product with a composition of methanol (68%) and water (31%). Traces of byproducts are also formed. Methanol conversion is at a rate of 5% per pass hence there is a continual recycling of the un- reacted gases in to the synthesis loop. 24.Reaction: 25. 4. 5. 4STEP-4: Methanol Purification 26. The 68% methanol solution is purified in two distinct steps in tall distillation columns called the topping column and refining column to yield a refined product with a purity of 99% methanol classified as Grade AA refined methanol. 27. The methanol process is tested at various stages and the finished product is stored in a large secured tank age area off the pla nt until such time that it is ready to be delivered to customers. 4. 6How it works on a gas turbine 28. Chemical reaction involved is: It reacts with water to form carbon di oxide (CO2) and hydrogen (H). 9. CH3OH + H2O = CO2 + 3H2 30. The reaction is endothermic and absorbs waste heat at about 300oC. The system performance was predicted using in house process simulator called CAPES and found thermal efficiency of approx. 50% (LHV) when turbine inlet temperature is 1,100oC and compression ratio is 14. The schematic diagram given below illustrates its function. 31. 32. Fig. 5 – Methanol fueled gas turbine process 33. 34. The performance of the gas turbine with steam reforming was recalculated using PRO/II. The same adiabatic efficiency of 87% for compressor and 90% for turbine were used.Similar value of overall thermal efficiency of approx. 50% was obtained as shown in Table-1. For reference, the performance of air heating system was also investigated. In this case, thermal eff iciency was in the same level as reforming but total heat transfer area is 1. 7 times of steam reforming case. Let’s explain model making of steam reformer by PRO/II. After defining stoichiometric data for steam reforming reaction, Gibbs reactor was used for equilibrium calculation at specified temperature. For combustor design, two combustion reactions were defined.Then two conversion reactors were connected in series and set the conversion parameter to 1. Both reactors are defined as adiabatic. 35. Heat exchangers having phase change were split into 10 to 20 zones and flow configurations were set to true counter flow. Minimum pinch points were set to 10 to 20 oC. Pressure drop of each exchangers were set to 0. 02-0. 01 atm and overall heat transfer coefficient were set to100kcal/h C. Flow Scheme| unit| Fig-1| Fig. -2| Waste Heat Recovery| | Air Heating & Methanol Evap. | Steam Reforming, Water Injection & Methanol Evap. Turbine Inlet Temperature| oC| 1,100| 1,100| Compressi on Ratio| -| 14| 14| Methanol Rate| kgmol/h| 0. 133| 0. 133| Stoichiometric Air Rate| kgmol/h| 1| 1| Air Rate| kgmol/h| 4. 150| 2. 600| Reforming Water Rate| kgmol/h| -| 0. 133| Total Water Rate| kgmol/h| -| 0. 720| Excess Air Mol Ratio| -| 4. 150| 2. 600| Water/Air Mol Ratio| -| 0. 000| 0. 277| Water/Methanol Mol Ratio| -| 0. 000| 5. 414| 1st Compressor Power| kW| -12. 472| -7. 814| 1st Turbine Power| kW| 24. 128| 19. 750| Water Injection Pump| kW| -| -0. 006| Net Shaft Power| kW| 11. 656| 11. 930| Power Output| kW| 11. 423| 11. 691|Methanol Heat of Combustion (HHV)| kW| 47. 149| 23. 574| Methanol HHV| kJ/mol| 638. 10| 638. 10| Overall Thermal Efficiency (HHV)| %| 48. 45| 49. 59| Compressor Adiabatic Efficiency| %| 87| 87| Turbine Adiabatic Efficiency| %| 90| 90| Generator Efficiency| %| 98| 98| Methanol Evaporator Area/Pinch Point| m2/oC| 0. 140/10| 0. 138/5| Methanol Reformer Area/Reaction Temp. | m2/oC| -| 0. 201/300| Air Heater Area/Pinch Point/Max. Temp. | m2/oC| 2. 972/10/525 | 0| Water Evaporator Area/Pinch Point| m2| -| 1. 452/10| Total Surface Area| m2| 3. 112| 1. 791| Exhaust Temperature| oC| 335. 3| 102. 5| Table 1 – Methanol Fuel Gas Turbine with Steam Reforming & Water Injection or Air Heating 4. 7Feasibility 36. MW, twin engine, gas turbine generator unit supplied by Turbo Power and Marine Systems, Inc. (Edison Co. 1981). The methanol was fired as a liquid. Some fuel system modifications were performed to permit the higher mass and volumetric flow of methanol to achieve base load output. Some elastomers in the fuel system were replaced with materials impervious to methanol attack. The tests showed: â€Å"Operations on methanol are as flexible as on natural gas or distillate fuel.The ability to start, stop, accelerate, decelerate, perform automatic synchronization, and respond to control signals is equal to operations on either natural gas or distillate fuel. Turbine performance on methanol is improved over other fuels due to higher mass f low and the lower combustion temperatures resulting from methanol operations. Oxides of nitrogen emissions on them ethanol-fueled turbine, without water injection, were approximately 80% of the emissions of the distillate-fueled turbine with water injection. There was a significant reduction in particulate emissions during methanol operation.An additional reduction in oxides of nitrogen emission was obtained during operations of the methanol-fueled turbine with water injection. No significant problems occurred during the test that could be attributed to methanol. The hot end inspection indicated cleaner components within the methanol-fueled turbine. † During 1984-1985, GE conducted methanol combustion tests of heavy-duty gas turbine combustors in a private study for Celanese Chemical Company, Inc. This work is unpublished. The tests were conducted at GE’s Gas Turbine. Development Laboratory in Schenectady, N . Y.Tests were performed with an MS6001B full-scale combustor representative of GE heavy-duty gas turbine combustors, and an MS7001 developmental dry low NOx combustor. Then ethanol was fired as a liquid, â€Å"dry† and also with water addition. A high-pressure centrifugal pump was used to supply the methanol to the combustor. The tests demonstrated that methanol fuel can be successfully burned in GE heavy-duty combustors without requiring major modifications to the combustor. NOx emissions were approximately 20% of those for the same combustor firing NO. 2 distillate at the same firing temperature.With water addition, NOx levels of 9 ppmv could be achieved. Liner metal temperatures, exit pattern factors, and dynamic pressures were not significantly affected by methanol combustion and met GE criteria for acceptable performance. The results are valid for 2000 F firing temperature machines (E-class). Additional work would be required to confirm performance with methanol fuel, elevated firing temperatures of the F series of machines. Vapor ized methanol will reduce NOx 5% to 10% (relative to CH4 emissions) whereas liquid methanol will reduce NOx 30% relative to CH4 emissions.Water content in the methanol provides further NOx reduction. In 1984, a field test demonstration was performed at the University of California at Davis (California Energy Commission 1986). Methanol was fired in a 3. 25 MW Allison 501-KB gas turbine for 1,036 hours. Low NOx emissions were observed and were further reduced by mixing water with the methanol. Problems encountered with the traditional gas turbine fuel pump were bypassed by using an off-board centrifugal pump. 4. 8Advantages & Disadvantages 37. Methanol is a liquefied form of methane, a naturally-occurring gaseous hydrocarbon produced by decomposition.Currently, methane is burned as a ‘waste† gas at oil drilling platforms, coal mining sites, landfills, and sewage treatment plants. The advantage is methane, and its derivative methanol is that it is extremely plentiful; drill ing for oil, mining coal, and the decomposition of organic matter all produce methane already. As a hydrocarbon similar to propane and petroleum, methane is a very powerful, explosive gas that can easily take the place of petroleum without marked decline in power or major retooling of existing technologies.The disadvantages of methanol is the process by which methane is converted into a liquid at normal temperatures; by mixing methane with natural gas and gasoline, methane is converted into methanol. But the need for gasoline does not entirely wean the United States off of oil, so its â€Å"alternative† status is questionable. Additionally, the process to capture, store, and convert methane is prohibitively expensive compared to gasoline. 38. 4. 9Conclusion 39. Methanol is considered a superior turbine fuel, with the promise of low emissions, excellent heat rate, and high power output.The gas turbine fuel system must be modified to accommodate the higher mass and volumetric f low of methanol (relative to natural gas or distillate). The low flash point of methanol necessitates explosion proofing. The low flash point also dictates that startup be performed with a secondary fuel such as distillate or natural gas. Testing to date has been with methanol as a liquid. GE is comfortable with methanol as a liquid or vapor. GE is prepared to make commercial offers for new or modified gas turbines utilizing methanol fuel in liquid or vapor form based on the earlier experience.Some combustion testing may be required for modern machines applying for very low NOx permits. 5. Power Alcohol 5. 1Introduction Power Alcohol is a mixture of petroleum and ethanol in different proportions and due to these proportions different names are given to each blend like:- 1. As a blend of 10 percent ethanol with 90 percent unleaded gasoline called â€Å"E-10 Unleaded†. 2. As a component of reformulated gasoline, both directly and/or as ethyl tertiary butyl ether (ETBE). 3. As a primary fuel with 85 parts of ethanol blended with 15 parts of unleaded gasoline called â€Å"E-85. (Rex Weber 2003) When mixed with unleaded gasoline, ethanol increases octane levels, decreases exhaust emissions, and extends the supply of gasoline. Ethanol in its liquid form, called ethyl alcohol, can be used as a fuel when blended with gasoline or in its original state. Well the production of ethanol fuel began way back in1907 but Ethanol use and production has increased considerably during the 1980s and 1990s not just due to the lack of fossil fuels but was also due to several other factors 1.Ethanol reduces the country’s dependence on imported oil, lowering the trade deficit and ensuring a dependable source of fuel should foreign supplies be interrupted. 2. Farmers see an increased demand for grain which helps to stabilize prices. 3. The quality of the environment improves. Carbon monoxide emissions are reduced, and lead and other carcinogens (cancer causing agents) are removed from gasoline. 5. 2Chemistry Glucose (a simple sugar) is created in the plant by  photosynthesis. 6 CO2  + 6 H2O + light > C6H12O6  + 6 O2 During  ethanol fermentation,  glucose  is decomposed into ethanol and  carbon dioxide.C6H12O6  > 2 C2H5OH+ 2 CO2  + heat During combustion ethanol reacts with  oxygen  to produce carbon dioxide,  water, and heat: C2H5OH + 3 O2  > 2 CO2  + 3 H2O + heat After doubling the combustion reaction because two molecules of ethanol are produced for each glucose molecule, and adding all three reactions together, there are equal numbers of each type of atom on each side of the equation, and the net reaction for the overall production and consumption of ethanol is just: Glucose itself is not the only substance in the plant that is fermented. The simple sugar  fructose  also undergoes fermentation.Three other compounds in the plant can be fermented after breaking them up by  hydrolysis  into the glucose or fructose molecules that compose them. Starch  and  cellulose  are molecules that are strings of glucose molecules, and sucrose  (ordinary table sugar) is a molecule of glucose bonded to a molecule of fructose. The energy to create fructose in the plant ultimately comes from the metabolism of glucose created by photosynthesis, and so sunlight also provides the energy generated by the fermentation of these other molecules. Ethanol may also be produced industrially from  ethene  (ethylene).Addition of water to the double bond converts ethene to ethanol: C2H4  + H2O > CH3CH2OH This is done in the presence of an acid which  catalyzes  the reaction, but is not consumed. The ethene is produced from petroleum by  steam cracking. 5. 3Production Ethanol can be produced by various methods but the most commonly used in today’s world is by the method of fermentation and distillation of sugarcane, grains, corn etc. 5. 3. 1Ethanol from sugar cane The first stage in ethanol produ ction is to grow a crop such as sugar cane. The sugar cane of cut down and undergoes fermentation and distillation. 5. 3. 2FermentationCrushed sugar cane in placed in fermentation tanks. Bacteria in the tanks acts on the sugar cane and in time produce a ‘crude’ form of ethanol. This is then passed on to the ‘distillation stills’ where it is refined to a pure form. 5. 3. 3Distillation The impure/crude ethanol is heated in a ‘still’ until it vaporizes and rises into the neck where it cools and condenses back to pure liquid ethanol. The impurities are left behind in the still. The ethanol trickles down the condensing tube into a barrel, ready for distribution. When burned it produces fewer pollutants than traditional fuels such as petrol and diesel.Fig. 6 – Distillation process of impure/crude ethanol The production of petroleum is done by the fractional distillation of crude oil. 5. 3. 4Fractional Distillation The various components of cru de oil have different sizes, weights and boiling temperatures; so, the first step is to separate these components. Because they have different boiling temperatures, they can be separated easily by a process called  fractional distillation. The steps of fractional distillation are as follows: 1. You  heat  the mixture of two or more substances (liquids) with different boiling points to a high temperature.Heating is usually done with high pressure steam to temperatures of about 1112 degrees Fahrenheit / 600 degrees Celsius. 2. The mixture  boils, forming vapor (gases); most substances go into the vapor phase. 3. The  vapor  enters the bottom of a long column (fractional distillation column) that is filled with trays or plates. The trays have many holes or bubble caps (like a loosened cap on a soda bottle) in them to allow the vapor to pass through. They increase the contact time between the vapor and the liquids in the column and  help to collect liquids that form at var ious heights in the column.There is a temperature difference across the column (hot at the bottom, cool at the top). 4. The  vapor rises  in the column. 5. As the vapor rises through the trays in the column, it  cools. 6. When a substance in the vapor reaches a height where the temperature of the column is equal to that substance's boiling point, it will  condense  to form a liquid. (The substance with the lowest boiling point will condense at the highest point in the column; substances with higher boiling points will condense lower in the column. ). 7.The trays  collect  the various liquid fractions. 8. The collected liquid fractions may  pass to condensers, which cool them further, and then go to storage tanks, or they may  go to other areas for further chemical processing Fractional distillation is useful for separating a mixture of substances with narrow differences in boiling points, and is the most important step in the refining process. The oil refining proc ess starts with a fractional distillation column. On the right, you can see several chemical processors that are described in the next section.Very few of the components come out of the fractional distillation column ready for market. Many of them must be chemically processed to make other fractions. For example, only 40% of distilled crude oil is gasoline; however, gasoline is one of the major products made by oil companies. Rather than continually distilling large quantities of crude oil, oil companies chemically process some other fractions from the distillation column to make gasoline; this processing increases the yield of gasoline from each barrel of crude oil.Fig. 7 – Fractional distillation of crude oil 5. 4Air pollution Compared with conventional  unleaded gasoline, ethanol is a particulate-free burning fuel source that combusts with oxygen to form carbon dioxide, water and  aldehydes. Gasoline produces 2. 44  CO2  equivalent  kg/l and ethanol 1. 94. Since ethanol contains 2/3 of the energy per volume as gasoline, ethanol produces 19% more CO2  than gasoline for the same energy. The  Clean Air Act  requires the addition of  oxygenates  to reduce carbon monoxide emissions in the United States.The additive  MTBE  is currently being phased out due to ground water contamination; hence ethanol becomes an attractive alternative additive. Annual Fuel Ethanol Production by Country (2007–2011)[2][64][65][66] Top 10 countries/regional blocks (Millions of U. S. liquid gallons per year)| World rank| Country/Region| 2011| 2010| 2009| 2008| 2007| 1|   United States| 13,900| 13,231| 10,938| 9,235| 6,485| 2|   Brazil| 5,573. 24| 6,921. 54| 6,577. 89| 6,472. 2| 5,019. 2| 3|   European Union| 1,199. 31| 1,176. 88| 1,039. 52| 733. 0| 570. 30| 4|   China| 554. 76| 541. 55| 541. 55| 501. 90| 486. 00| 5|   Thailand| | | 435. 20| 89. 80| 79. 20| 6|   Canada| 462. 3| 356. 63| 290. 59| 237. 70| 211. 30| 7|   India| | | 91. 6 7| 66. 00| 52. 80| 8|   Colombia| | | 83. 21| 79. 30| 74. 90| 9|   Australia| 87. 2| 66. 04| 56. 80| 26. 40| 26. 40| 10| Other| | | 247. 27| | | Table 2 – Annual fuel ethanol production by country Table 2 – Annual fuel ethanol production by country | World Total| 22,356. 09| 22,946. 87| 19,534. 993| 17,335. 20| 13,101. 7| 5. 5AdvantagesEthanol has a higher octane number (113) than regular unleaded gasoline (87) and premium unleaded gasoline (93). Complete combustion: Ethanol molecules contain 35 percent oxygen, and serve as an â€Å"oxygenate† to raise the oxygen content of gasoline fuel. Thus, it helps gasoline burn completely and reduces the buildup of gummy deposits. Prevent overheating: Ethanol burns cooler than gasoline. Fuel Type| Ethanol| Regular Gasoline| Premier Gasoline| E10 Gasohol| E85 Gasohol| Energy Content (/Gallons)| 84,600| 125,000| 131,200| 120,900| 90,660| Table 3 – Energy content of fuelsEnergy content: As shown in Table 2, fuel et hanol contains around 33 percent less energy content than regular gasoline. The energy content of gasohol blends (E10 or E85) is determined by the energy content of ethanol and gasoline, and their ratio. Emissions from ethanol are about 48% of diesel; it is lowest of any of the fuels. â€Å"The clean burning characteristics extend turbine life, possibly by as much as 100%. † (K. K. Gupta 2010) 5. 6Disadvantages Loss of power and performance – Pure ethanol is over 100+ octane, and provides the fuel with much of its octane rating.Because Ethanol burns at a lower temperature than the older (MTBE) gas, boaters can expect to see a 2 to 3 % drop in RPM. â€Å"Use of ethanol in the pure state or as a blend would probably require replacement of any white metal or aluminum in the system as well as some elastomers. † (K. K. Gupta 2010) 6. References Hydrogen Journal Papers G. L. Juste (2006) Hydrogen injection as additional fuel in gas turbine combustor. Evaluation of eff ects. International Journal of Hydrogen Energy 31 (2006) 2112 – 2121 K. K. Gupta a,*, A. Rehman b, R. M.Sarviya b, (2010) Bio-fuels for the gas turbine: A review. Renewable and Sustainable Energy Reviews 14 (2010) 2946–2955 P. A. Pilavachi (2000), Power generation with gas turbine systems and combined heat and power, Applied Thermal Engineering 20 (2000) 1421 ±1429 Paolo Gobbato*, Massimo Masi, Andrea Toffolo, Andrea Lazzaretto (2010) Numerical simulation of a hydrogen fuelled gas turbine combustor. International Journal of Hydrogen Energy 36 (2011) 7993- 8002 Nils Erland L. Haugena, Christian Brunhuberb and Marie Bysveena (2012) Hydrogen fuel supply system and re-heat gas turbine.Combustion Energy Procedia 23 ( 2012 ) 151 – 160 Website Pyromex ® Technology Description http://www. pyromex. com/index. php/en/pyromex-technology/technology-description Methanol & Power alcohol â€Å"A Special Report: Burning Tomorrow’s Fuels,† Power, S14-S15, Febru ary 1979. â€Å"Test and Evaluation of Methanol in a Gas Turbine System,† Southern California Edison Company, EPRI Report AP-1712, February 1981. â€Å"Methanol. Clean Coal Stationary Engine Demonstration Project. Executive Summary,† California Energy Commission, Report P500-86-004, February 1986. Methanol Power Generation – Demonstration Test Starts for a Power Source at Peak Demand† Japanese High-Technology Monitor, 5 April 1993. â€Å"Ethanol blended fuels† – Rex Weber 2003 of Northwest Iowa Community College in cooperation with the Iowa Corn Promotion Board. â€Å"Fuel Ethanol† – Zhiyou Wen, Extension Engineer, Biological System Engineering, Virginia Tech John Ignosh, Area Specialist, Northwest District, Virginia Cooperative Extension, Jactone Arogo, Extension Engineer, Biological System Engineering, Virginia Tech

Psychology Questions

————————————————- Outline and evaluate the multi-store model? The multi-store model is a model of memory that has the advantage of being able to be broken down into sub-models of memory. According to the multi-store model of memory (Atkinson & Shiffrin, 1968) memory can be explained in terms of 3 stores (sensory store, short term store and long term store) and 2 processes (attention and rehearsal). Sensory Memory stores the incoming information from the senses.The model assumes that these are modality specific that is there is a separate store for each of the five senses. The store is very brief and the vast majority of information is lost here. Only information that is relevant or important is attended to and passed on to STM. STM Atkinson & Shiffrin believed the store to be fragile and retains information for about 30 seconds. Compare this to the 18 seconds of the Brownâ €“Peterson technique. Material that is rehearsed is passed on to LTM. LTM can store this information for a lifetime. Forgetting from LTM is by decay or interference.Attention: needed to transfer information from the senses to STM. Most stimuli that reach the senses are ignored because they aren’t seen as important. Only relevant or interesting information or material that we choose to concentrate on is passed to the STM. 99% is lost at this stage. Rehearsal: needed to transfer information from STM to LTM. We can rehearse information out loud as a child would do or we can rehearse sub-vocally, in our heads. Either way it is seen as crucial and is one of the main criticisms of the theory, as we shall see.Later models distinguished between maintenance rehearsal in which material is repeated in ‘rote’ fashion to maintain it in STM and help with transfer to LTM. Elaborative rehearsal links the information with existing material or elaborates it in some other way, again as an aid to longer term storage. To evaluate, the model has simplistic appeal and has been influential in stimulating research. Other models such as the ‘working memory model’ take the multi-store model as starting point and then add to it.Much of the supporting evidence for the multi-store model comes from artificial, laboratory studies which might not reflect how memory works in real life. Therefore memory research data have accumulated that traditional multi store models simply cannot explain. Researchers have, therefore looked to new models in order to explain memory more fully. ————————————————- Outline and evaluate the effects working memory model? Alan Baddeley and Graham Hitch proposed a model of working memory in 1974, in an attempt to describe a more accurate model of short-term memory.Baddeley & Hitch proposed their tripartite working memory model as an alternative to the short-term store in Atkinson & Shiffrin's ‘multi-store' memory model. The model consist of three main components; the central executive, the phonological loop and the visuo-spatial sketchpad. The central executive has limited capacity but can process information from any sensory system. It has responsibility and controls for a range of important control processes, which include setting task goals, monitoring and correcting errors etc†¦ Moreover this core component is supported by two slave systems, which can be used as storage systems.Therefore the slave systems have separate responsibilities and work independently of one another. The phonological loop, is a limited capacity, temporary storage systems for holding verbal information in a speech based form. The visuo-spatial sketchpad is a limited capacity temporary memory system for holding visual and spatial information. To evaluate, although the working memory model has been applied to vari ous real life settings. However the working memory model does not offer a complete understanding of how memory works.For example the exact role for the central executive remains unclear and other researchers have also questioned whether there are separate verbal and spatial working memory models systems. Baddeley (2001) added the episodic buffer making the model more complex. This suggests again that the model is not complete and may need still further revision as more evidence is uncovered. Overall the model has proved to be influential and has stimulated lots of research. It is still being developed and expanded. ————————————————-Outline and evaluate the effects on day care on peer aggression? Day care is a form of temporary care not given by a family member or someone known to the child. It usually takes place outside of the family. There are many forms of day care but the most common ones are nursery and child-minders. Some research has shown that day care has negative effects on the social development of infants, however most importantly several factors have been identified as factors which will affect the effects day care has on an infant. These factors are the quality of care and the number of hours the child spends in day care.Vandell and Corasaniti (1990) found that eight year olds who had spent their early years in day care were rated as more ‘non-compliant’ by both their teachers and their parents. A number of studies e. g. Belsky (1999) have tended to support this finding that long periods of day care in the first five years can lead to raised levels of aggressive behaviour in later childhood. Haskins (1985) found that children kept in larger groups were more likely to be aggressive. Clarke-Stewart (again) argue that much of the research into aggression (e. g. Vandell and Corasaniti) fail to distinguish non-compliance from as sertiveness from aggression.What are being reported as more aggressive behaviour in the day care children could simply be children that have greater confidence and have learned to assert themselves better and to control their feelings and emotions. To evaluate, day care can be seen as a potentially stressful experience and poor quality care can be associated with less positive social outcomes such as increase aggression. Oreover it can be difficult to assess the effects o day care due to the variety of settings and individual differences in children’s attachments to their parents.