Effect of varying inlet water temperature on performance of three pass helical coil heat exchanger

Abstract

The straight tube heat exchanger is used mostly in industries such as evaporator or condenser for chemical industry and cooling fluid system. The straight tube heat exchanger consumes more space but offers lesser surface area of contact. This type of heat exchanger provides only one type of flow in single pass. Now there is need of such type of heat exchanger which increases the effectiveness with saving in cost. To improve the efficiency of heat exchanger one must think of heat transfer enhancement in heat exchanger which can help to minimize the problems associated with conventional heat exchangers in near future. Energy and material saving considerations as well as environmental challenges in the industry have increased the demand of New Design for high efficiency heat exchanger. To improve the efficiency of heat exchanger we must think of heat transfer enhancement in heat exchanger.Helical coil heat exchangers are one of the most commonly found equipment in many industry.The helical coil heat exchangers can be made in the form of a cylindrical or shell and tube heat exchangers and it be used for several industrial applications such as power plant, nuclear power plant sector, food process industry, waste heat recovery systems, HVAC industry etc. Helical coil Configuration is very efficient for heat exchangers design because it can accommodate a large heat area for heat transfer in a small space, with high heat transfer coefficients of performance. Heat Transfer Coefficient always increases in helical coil heat exchanger configuration due to centrifugal force generated in it.