Open Access

ARTICLE

Theoretical and Experimental Analysis of Heat Transfer and Condensation in Micro-Ribbed Tubes

by Daoming Shen^1,*, Jinhong Xia¹, Chao Gui¹, Songtao Xue²

1 Xinxiang University, Xinxiang, 453000, China
2 Department of Architecture, Tohoku Institute of Technology, Sendai, 982-8577, Japan

* Corresponding Author: Daoming Shen. Email:

(This article belongs to the Special Issue: Computational Mechanics and Fluid Dynamics in Intelligent Manufacturing and Material Processing)

Fluid Dynamics & Materials Processing 2023, 19(6), 1411-1424. https://doi.org/10.32604/fdmp.2023.024924

Received 14 June 2022; Accepted 13 September 2022; Issue published 30 January 2023

Abstract

The thermal transmission coefficient for a micro-ribbed tube has been determined using theoretical relationships and the outcomes of such calculations have been compared with experiments conducted using a R1234yf refrigerant undergoing condensation. In particular four theoretical single-phase flow and three multi-phase flow models have been used in this regard. The experimental results show that: the Oliver et al. criterion equation overestimates the experimental results as its accuracy is significantly affected by the specific conditions realized inside micro-fin tubes; the Miyara et al. criterion equation prediction error is less than 15%; the Cavallini et al. approach gives the highest prediction accuracy; the Goto et al. model overestimates the test data. Such results are critically discussed and some indications for the improvement of such models are provided.

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Keywords

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