Study to increase the efficiency of shell and tube heat exchanger of the two-stage compressor in Touss Power plant

In this paper, a heat exchanger in the Toos power plant in Mashhad has been studied, which is used in a two-stage air compressor as a middle cooler. The purpose of paper is increase the efficiency of this heat exchanger with Keep the shell and tube sizes and arrangement of tubes to increase efficiency of two-stage air compressor. According to the results obtained by increasing the tubes number of 66 to 74, the heat transfer area increasing 13 percent; as well as, the efficiency of heat exchanger increase of 81.16 to 82.7 percent. In general, two-stage air compressor efficiencies increase of 41 to 42 percent. Increasing the efficiency of the compressor will save 1.12 KW power in the compressor engine.