Experimental Study on Effect of Length of Twisted Tape Insert on Performance of Double Pipe Heat Exchanger (DPHE)

Heat transfer is the science that seeks to predict the energy transfer that may take place between material bodies or fluids as a result of a temperature difference. The heat transfer or heat exchange by the Heat Exchanger. The use of heat exchangers in Power plants, Chemical plants, Pharmaceutical, Agriculture products, cooling of electrical machines and electronic devices. Our discussion of heat exchangers will take the form of technical analysis; that is, the methods of predicting heat-exchanger performance. A particular application will dictate the rules which one must follow to obtain the best design commensurate with economic considerations, size, weight etc. In this respect, we limit our discussion to heat exchangers where the primary modes of heat transfer are conduction and convection. Double pipe heat exchanger having a relatively small diameter and it is easy to fabricate as compare to helical tube, corrugated , baffled tube and many more compact type of heat exchanger. In the present work experiment is carried out on double pipe heat exchanger in which hot water is flowing through inner tube where as cold water is flowing through the annulus and hot water to cold water heat exchange is taken into consideration.