Thermal Power Plants
Waste heat is a significant problem in thermal power plants, as a considerable portion of the energy input is lost as heat during various processes. These waste heat problems can have adverse effects on the overall efficiency and environmental impact of power generation. Here are some common waste heat problems encountered in thermal power plants:
Exhaust Gas Heat Loss: When fuel is burned to generate heat in a thermal power plant, a substantial portion of the heat is lost in the form of hot exhaust gases.
Cooling System Heat Loss: Thermal power plants use cooling systems to maintain the temperature of various components, including turbines and condensers.
Incomplete Combustion and Stack Heat Loss: Incomplete combustion of fuel can lead to inefficiencies and the release of unburned fuel as waste heat. Additionally, heat losses occur through the stacks where exhaust gases exit the plant.
Steam Condensation Heat Loss: In the steam cycle of a thermal power plant, steam is condensed back into water to be reused in the boiler. This condensation process releases heat that is often lost.
Heat Loss in Transmission and Distribution: In the distribution of electricity from the power plant to end-users, there are losses due to resistance in power lines and transformers. These losses result in wasted energy in the form of heat.