The Nissan Motor Co., Ltd. North America in the next few years. The decision is anchored on the growing competition and the move of automakers towards fuel efficiency. Carlos Ghosn, the chief executive of the Nissan of Japan and the Renault of France, intimated the details about the company's diesel strategy in a speech to the Council on Foreign Relations in Washington. Ghosn is amenable that the auto industry may have been shortsighted in fighting increased fuel-economy standards. Like other automotive executives, Ghosn is striving to satisfy the increasing consumer appetite for fuel-efficient cars. Additionally, the fuel efficiency demands in Washington have to be solved immediately before global warming and oil-dependence issues cripple the industry. In a meeting with editors and reporters in the industry, Ghosn said that the auto industry brought some problems on itself by fighting fuel-economy regulations over the years. Ghosn said any push for tougher fuel-economy rules - known as the corporate average fuel economy, or CAFE - should be accompanied by tougher limits on other carbon-dioxide-emitting industries.
Ghosn said. For the new diesel-powered vehicle, the automaker is likely to use the expertise of Renault which is its alliance partner. In 2005, sixty three percent of the Japanese automaker's product lines in Western Europe were equipped with diesel engines. With the shift to greener and cleaner engines, other automakers are now planning more diesels in their lineup. DaimlerChrysler, Honda, and Volkswagen are just some of the automakers working with that goal in mind. As the auto industry continues to produce more-efficient vehicles, Ghosn urged lawmakers and regulators to make rules that simply do not favor one technology over another. Ghosn has ridiculed hybrids in the past, saying that their high prices did not make good business sense. Ghosn said that he was not convinced that hybrids were the answer to U.S. But now, he is singing a new tune. This year, Nissan is introducing its first hybrid which is a version of the Altima sedan. It will not fascinate enthusiasts just because of Nissan tail light, but would catch attention because of its green technology mated to superb performance and appearance. The hybrid technology is licensed from the Toyota Motor Corporation.
The large amount of heat generated during the nuclear fission of U-235 is used to convert water into steam. This steam is then used to drive the turbines which are connected to electricity generators. In this way, electricity is generated. Radiation hazard is a major problem. Disposal of radio active wastes creates difficulty. It requires high initial cost. The fuel is expensive and not abundant. It requires high technical knowledge for its operation. Power generation is independent of weather conditions. It requires less area for installation. The quantity of fuel involved is less. Pollution is less when compared to thermal power plants. Thermal generation has a central role to play in supplying electric power, and we are striving for the development of power generation technology that is even more efficient. In a thermal power plant steam is produced and used to spin a turbine that operates a generator. A conventional thermal power plant uses coal, oil or natural gas as fuel to boil water to produce the steam.
There are three major types of thermal power plants and they are the following. Steam turbine power plants. Gas turbine power plants. Diesel engine power plants. In diesel power plants, diesel oil is used as the fuel. Steam power plant facilities constitute a means of power generation that uses the expansion power of steam. Fuel is burned inside a boiler to heat water and generate steam. This steam is then used to drive turbines which in turn drive the power generators to make electricity. This steam is suitable for the use of thermal energy of relative low temperature (below 600 degree celsius). The steam coming out of the turbine is condensed to water and is recycled. In order to improve the efficiency of the steam power plant, some additional functional parts such as super heater, economizer etc. is also included in the plant. A schematic and different parts are shown below. Coal and Ash System : In this system, the coal from the coal storage is fed to the boiler through coal handling equipment for the generation of steam.
Air and Gas System : Air is supplied to the combustion chamber of the boiler through a draught fan. The exhaust gases carrying sufficient quantity of heat and ash are passed through the air heater and then passed into the boiler. 1000 degree celsius. This hot gas is passed through different stages like super heater, economizer, air pre-heater and at last, it is released out through the chimney. Boiler House : Boilers burn the fuel transferred from the tank and use the resulting heat to convert water into steam. Inside the boilers are tens of thousands of water carrying tubes. When combustion commences, the temperature inside the boilers rises to between 1,100 and 1,500 degree celsius, the water inside the tubes is turned into high temperature and high pressure steam, and the steam is transferred to the steam turbines. Coal and air in correct proportion is sent to the boiler house for combustion to take place. Water is supplied to the boiler through the boiler feed pump.
