Performance Evaluation Of Thermal Power System

Thethermoeconomic model,exergy cost model and thermoeconomic cost model based on the Fuel-Product definition are used to quantify the productive interactions among different components of the plant.The thermodynamic process of cost formation and the distribution of the resources throughout the 600MW coal-fired power plant located in Guangdong Province can be analyzed。The unit cost of each component can be obtained by using the structural theory of thermoeconomics.But the real causes of the variations in the performance of the system or components still can not be identified by only using these costs.The exergy and thermoeconomic cost equations in the structural theory of thermoeconomics are improved to identify and quantify the composition of the unit exergy/ thermoeconomic cost of the product in each component.A performance index, i.e.specific irreversibility cost,isobtained from this improvement.This index can quantify the system performance from a global point of view,and can be used to compare the production performance of each component in a same system or between different systems under the same benchmark.