Numerical and Experimental Analysis of Heat Transfer Through Twisted Pipe Heat Exchanger

The heat transfer characteristics of a double tube heat exchanger with twist are enhanced theoretically and numerically. Dimensions for the heat exchanger are, 0.0254m inner pipe diameter and 0.0508 outer pipe diameters, with a thickness of 0.001m and 0.0025m respectively with a length of 1m. The velocity of the fluid inside the both inner and outer pipes is considered as 0.4m/s Study of transient heat transfer in double tube counter flow heat exchanger was carried out with corrugations on the inner tube by twisting the pipe from one end, which gives the more swirling motion to the fluid particles flowing through it. The flow inside the pipe was considered as turbulent, and the analysis was done theoretically by using the ANSYS workbench and also experimentally. The experimental results in the twisted pipe heat exchanger were compared with that of the normal pipe heat exchanger. Theoretical and experimental values given that the heat transfer rate in twisted pipe was more comparing with that of the normal pipe heat exchanger.