Exergy Analysis of a Thermal Power Plant

Abstract

In this paper energy analysis of thermal power plant is presented. The primary objectives of the paper are to identify and quantify the reactions having maximum energy losses. Energy analysis is based on the second law of thermodynamics which gives maximum potential work and also characterizes the irreversibility of the process. It is found that the most significant source of energy destruction as well as irreversibility in the plant. The heat losses through the boiler and condenser are considered here. The energy balance and energy destruction are performed around the different equipment of the plant. The total energy losses around the boiler are 6%while maximum energy losses occur in condenser about 66% of total energy loss. The major source of energy loss is boiler where around 77% of the fuel energy was destroyed, in the turbine it is 13% of total fuel energy was destroyed. It shows that the boiler is the major source of the irreversibility in the plant. The energy destruction losses are expressed by. Moreover, the performance of different techniques for PAH removal is also compared and discussed for a better understanding of the treatment processes.