A new performance evaluation method and its application in fin-tube surface design of small diameter tube

doi:10.1007/s11708-010-0132-8

Front Energ

2011, Vol. 5

Issue (1) : 59-68 https://doi.org/10.1007/s11708-010-0132-8

RESEARCH ARTICLE

A new performance evaluation method and its application in fin-tube surface design of small diameter tube

Jufang FAN¹, Weikun DING¹, Zhigeng WU¹, Yaling HE¹, Wenquan TAO¹(

), Yongxin ZHENG², Yifeng GAO², Ji SONG²

1. School of Energy & Power Engineering, Xi’an Jiaotong University, Xi’an 710049, China; 2. International Copper Association Ltd. China, Shanghai Office, Shanghai 200020, China

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Abstract

In this paper, a simple yet efficient performance comparison method is proposed based on the assumptions of constant properties and identical frontal area. For this method, no correlations are required, and a small number of discrete data are sufficient. To illustrate the feasibility of the proposed approach, a new slotted fin with 4 mm tubes is designed to replace the original louvered fin with tubes of 7 mm. The orthogonal design method is adopted in the fin design to reduce the number of computational cases significantly, and yet a nearly optimum combination of major geometric factors can still be obtained. The reasonable parametric combination of 3 global parameters is obtained by analyzing the numerical results of 16 plain plate fins. Based on this result, 3 new slotted fins with different fin pitches are studied. The slotted fin with a fin pitch of 1.4 mm is recommended after considering the heat transfer, comprehensive performance, and cost of material and operation. The result shows that compared with the original louvered fin, the recommended fin not only increases the heat transfer rate by 2.2%, 22.5%, and 13.7% under an identical flow rate, identical pressure drop, and identical pumping power constraint, respectively, but also saves approximately 36% of the copper tube materials.

Keywords performance evaluation orthogonal design small-diameter tube

Corresponding Author(s): TAO Wenquan,Email:wqtao@mail.xjtu.edu.cn

Issue Date: 05 March 2011

Cite this article:

Jufang FAN,Weikun DING,Zhigeng WU, et al. A new performance evaluation method and its application in fin-tube surface design of small diameter tube[J]. Front Energ, 2011, 5(1): 59-68.

URL:

https://academic.hep.com.cn/fie/EN/10.1007/s11708-010-0132-8
https://academic.hep.com.cn/fie/EN/Y2011/V5/I1/59

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