Heat exchangers are commonly used in the chemical industry to transfer heat between two different fluids, usually with different temperatures. This allows for efficient heat transfer and energy conservation, while helping to control temperatures and reduce energy costs. In the chemical industry, heat exchangers are used to heat reactants, to cool or condense products, to preheat or reheat feedstock, and to control temperature in reaction vessels and columns. Heat exchangers are also used to cool process streams, to reduce effluent temperatures, to heat and cool tanks, to reduce heat losses from evaporation, and to reduce steam requirements. Heat exchangers have wide-ranging applications in the chemical industry. A heat exchanger is a device that transfers heat from one medium to another, typically through a conductive surface such as pipes, plates, or spirals. In chemical production processes, heat exchangers play a crucial role in several ways: