Enhancement of Heat Transfer Rate with a Low-Pressure Drop in Shell and Tube Heat Exchanger through Optimal Spacing of Helical Baffle

Abstract

Shell and tube heat exchangers are used in factories for heat exchangers. Major issues of these heat exchangers are low heat, low frequency and high-pressure drop. Numerical study of the difference between gap and angle of barrier in volume firth and outlet move medium is determined for variation or movement of pipes to accept flow medium. Each baffle system is considered under the variation of flow medium controlled in the path and heat exchanger. It defines the variation of surface and heat exchanger with the flow of hot and cold fluid in surface and heat exchanger and the number of baffle structures. The number of turn units (NTU), overall heat exchanger coefficient (U) and efficiency (\(\varepsilon\)) are evaluated based on different Reynolds numbers (Rec) on the shell side (17693–30331). On the surface edge of the proposed method, the pressure drop is evaluated as the loss of strength from the system. In addition, the impact of inlet cooling fluid temperature, baffle spacing and baffle cutting ratio (BCR) is analyzed and discussed. As the results in all cases, the proposed configuration significantly increases the efficiency of heat exchangers compared to the other two configurations. The proposed method, reducing the pressure drop by 12.40%–11.22%, increases U, \(\varepsilon\) and NTU by 4.51%, 2.87%–4.51% and 5.78%–8.17% respectively.