Heat transfer improvement of counter-flow heat exchanger by using longitudinal fins with various heights and cross-section

Now a day, a numerical simulation for a double pipe heat exchanger (DPHE) with a counter-flow is presented in order to study the effects of adding longitudinal (triangular and rectangular) fins attached to the inner tube exterior surface with dimensions (2×6 ×1000) mm and the number of fins (8) fixe...

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Bibliographic Details
Main Authors: Ali¹, Ban Ghulam Ridha, Kadhim, Zena Khalefa, Kareem, Raed J.
Format: Conference Proceeding
Language:English
Subjects:
Cold flow
Counterflow
Fins
Heat exchangers
Heat transfer
Mass flow rate
Pressure drop
Tubes
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Summary:Now a day, a numerical simulation for a double pipe heat exchanger (DPHE) with a counter-flow is presented in order to study the effects of adding longitudinal (triangular and rectangular) fins attached to the inner tube exterior surface with dimensions (2×6 ×1000) mm and the number of fins (8) fixed for all types of fins. With different amounts of mass flow rates for the hot and cold sides, the benefits of the fin type were studied further studying the effect of three heights (4, 6 and 8) mm for the type of fins that give better thermal performance. The results showed that the heat transfer improvement was about 15 % and 11% when using rectangular and triangular fins respectively as compared with the smooth tubes. The triangular fins show a lower pressure drop of 49.6% compared to the regular tube, while the rectangular fins give a pressure drop of 59.8% compared to the regular tube.
ISSN:0094-243X
1551-7616
DOI:10.1063/5.0212645