Publisher Summary This chapter discusses heat exchangers. Shell and tube heat exchangers are designated by front head type, shell type, and rear head type. This chapter provides selection guides for shell and tube heat exchanger. The chapter describes how to determine heat exchanger heat transfer coefficient. In order to determine heat exchanger heat transfer coefficient, one must sum all the resistances to heat transfer. The reciprocal of this sum is the heat transfer coefficient. The chapter lists metal resistance of tubes and pipes. The chapter also lists the advantages and disadvantages of forced and induced draft air-cooled heat exchangers. There are three primary means of controlling temperature for air-cooled heat exchangers: adjustable shutters, controllable pitch fan and combination control.