Asian Review of Mechanical Engineering (ARME)
Heat Transfer and Fluid Flow in Double Pipe Heat Exchanger, Part II: Numerical InvestigationAuthor : Shreyas Kotian, Nachiket Methekar, Nishant Jain and Pritish Naik
Volume 9 No.2 July-December 2020 pp 31-42
Analysis of thermo hydraulic characteristics in a simple configuration of the double-pipe heat exchangers adds a great value to the design of heat exchangers. This paper presents a comparison of the experimental observations and numerical predictions for the thermal characteristics of the double pipe heat exchanger. A CAD design was developed and the Realizable k-ε mathematical model coupled with enhanced wall treatment gave the closest results. Experiments were performed for 60 ≤ Re ≤ 240 for two different inlet temperatures of the hot fluid, 50°C, and 70°C keeping the inlet temperature of the cold fluid constant at 31°C. Temperature gradients extracted from ANSYS Fluent were compared with the experimental data. Further, pressure and temperature contours for the hot and cold streams were generated to analyze the performance parameters.
Double pipe heat exchanger, CAD design, ANSYS FLUENT, thermo hydraulic characteristics
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