05-04-2016, 10:36 AM
08-04-2016, 04:37 PM
micro steam power plant ppt
Abstract The efficiency of thermal power plants is rather poor. In the power plants, before starting a new cycle, the steam which is used to spin the turbine in the last cycle has to be condensed to water at first and then reheated to change into steam again. This process is an important thermodynamic rule and needed for an efficient heat to electricity conversion cycle in the power plants, so, in addition to mechanical and heat transfer losses, large amounts of fuel energy is wasted during condensation and rejected to the atmosphere. In the presented paper, we decide to convert some of the condenser wasted energy to electricity using thermoelectric material. At first, the cycle occurring in thermal power plants in which the electricity is generated from the fuel heat, is explained. Then, the two condenser types and their performance mechanism are declared. After selecting appropriate thermoelectric material and presenting its characteristic and also equations, a thermoelectric generator is designed to use as the condenser of a 2000MW thermal power plant. It's shown that about 3.3% increasing in the power plant efficiency is expected by using the selected thermoelectric generator in the condensation cycle. Introduction A steam-electric power station is a power station in which the electric generator is steam driven. Water is heated, turns into steam and spins a steam turbine which drives an electrical generator. After it passes through the turbine, the steam is condensed in a condenser. The greatest variation in the design of steam-electric power plants is due to the different fuel sources. Almost all coal, nuclear, geothermal, solar thermal electric power plants, waste incineration plants as well as many natural gas power plants are steam-electric. Natural gas is frequently combusted in gas turbines as well as boilers. The waste heat from a gas turbine can be used to raise steam, in a combined cycle plant that improves overall efficiency. Worldwide, most electric power is produced by steam-electric power plants, which produce about 86% of all electric generation[citation needed]. The only other types of plants that currently have a significant contribution are hydroelectric and gas turbine plants, which can burn natural gas or diesel. Photovoltaic panels, wind turbines and binary cycle geothermal plants are also non-steam electric, but currently do not produce much electricity.
14-07-2016, 04:33 PM
micro steam power plant ppt Abstract The efficiency of thermal power plants is rather poor. In the power plants, before starting a new cycle, the steam which is used to spin the turbine in the last cycle has to be condensed to water at first and then reheated to change into steam again. This process is an important thermodynamic rule and needed for an efficient heat to electricity conversion cycle in the power plants, so, in addition to mechanical and heat transfer losses, large amounts of fuel energy is wasted during condensation and rejected to the atmosphere. In the presented paper, we decide to convert some of the condenser wasted energy to electricity using thermoelectric material. At first, the cycle occurring in thermal power plants in which the electricity is generated from the fuel heat, is explained. Then, the two condenser types and their performance mechanism are declared. After selecting appropriate thermoelectric material and presenting its characteristic and also equations, a thermoelectric generator is designed to use as the condenser of a 2000MW thermal power plant. It's shown that about 3.3% increasing in the power plant efficiency is expected by using the selected thermoelectric generator in the condensation cycle. Introduction A steam-electric power station is a power station in which the electric generator is steam driven. Water is heated, turns into steam and spins a steam turbine which drives an electrical generator. After it passes through the turbine, the steam is condensed in a condenser. The greatest variation in the design of steam-electric power plants is due to the different fuel sources. Almost all coal, nuclear, geothermal, solar thermal electric power plants, waste incineration plants as well as many natural gas power plants are steam-electric. Natural gas is frequently combusted in gas turbines as well as boilers. The waste heat from a gas turbine can be used to raise steam, in a combined cycle plant that improves overall efficiency. Worldwide, most electric power is produced by steam-electric power plants, which produce about 86% of all electric generation[citation needed]. The only other types of plants that currently have a significant contribution are hydroelectric and gas turbine plants, which can burn natural gas or diesel. Photovoltaic panels, wind turbines and binary cycle geothermal plants are also non-steam electric, but currently do not produce much electricity. Reference: https://seminarproject.net/Thread-micro-...z4ENdPGSUN |
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