HEAT RECOVERY FROM BOILER BLOWDOWN WATER BY USING HEAT EXCHANGER IN THERMAL POWER PLANT

Our project aims basically on recovering boiler blow down water heat by designing a heat exchanger. The temperature of blow down water in the flash tank is about 1100C. This heat can be used to heat the boiler make up water through a heat recovery exchange unit on account of which fuel consumption can be reduced. By installing a heat exchanger recovery unit, the heat resident in the blow down liquid is transferred to the treated make up water. The preheated makeup water is then routed through the dearator. The main reason behind this preheating procedure is to reduce the fuel, which is the primary source of the heating.