WIT Press


CFD Simulation And Analysis Of A Gas To Water Two-phase Closed Thermosyphon-based Heat Exchanger

Price

Free (open access)

Paper DOI

10.2495/HT140201

Volume

83

Pages

12

Page Range

217 - 228

Published

2014

Size

1,038 kb

Author(s)

J. B. Ramos, A. Z. Chong, C. Tan1, J. Matthews, M. A. Boocock & H. Jouhara

Abstract

Wickless heat pipes are devices with high reliability and heat transfer potential per unit area. Owed to that fact, their application range has been widened in the past 20 years. In the process industry, they are usually coupled to waste heat recovery devices, namely heat exchangers. Heat-pipe-based heat exchangers offer many advantages when compared to conventional waste heat recovery systems, such as increased reliability and reduced cost of production. The design of such devices, however, is not a straightforward process due to the complex modes of heat transfer mechanisms involved. In this paper, the characterisation of a cross-flow heat pipe based heat exchanger is made via the use of ANSYS Fluent, a CFD solver. A design tool with the purpose of predicting the performance of the test unit is also developed and validated through comparison between the CFD model and previous experimental results. Keywords: heat recovery, heat exchangers, heat pipes, thermosyphons, CFD, effectiveness.

Keywords

heat recovery, heat exchangers, heat pipes, thermosyphons, CFD, effectiveness.