Entropy generation analysis of a mini heat exchanger for heat transfer intensification

被引：25

作者：

Tarlet, Dominique ^{[1
]}

Fan, Yilin ^{[1
]}

Roux, Stephane ^{[1
]}

Luo, Lingai ^{[1
]}

机构：

[1] Univ Nantes Polytech Nantes, Lab Thermocinet Nantes, LTN UMR CNRS 6607, F-44306 Nantes 3, France

来源：

EXPERIMENTAL THERMAL AND FLUID SCIENCE | 2014年 / 53卷

关键词：

Mini heat exchanger; Flow distribution; Thermal performance; Entropy generation; Infrared thermography; 2ND LAW ANALYSIS; PERFORMANCE EVALUATION CRITERIA; MINIMIZATION ANALYSIS; OPTIMALITY CRITERION; TRANSFER SURFACES; PROCESS DESIGN; OPTIMIZATION; FLOW; EQUIPARTITION; PRINCIPLE;

D O I：

10.1016/j.expthermflusci.2013.11.016

中图分类号：

O414.1 [热力学];

学科分类号：

摘要：

This paper presents a first and second law analysis of the heat transfer characteristics of a mini shell-and-tube heat exchanger equipped with multi-scale distributor/collector. Experiments of heat exchanger with or without transverse baffles installed in the shell side are conducted, under laminar flow conditions (average channel Re number between 8 and 100). The temperature field at the shell side is obtained by using infrared thermography. The effects of transverse baffles on the thermal performance and entropy generation of the heat exchanger system are quantified and discussed. Experimental results show that the integration of multi-scale branched distributor and collector guarantees uniform flow distribution among parallel tubes. The installation of baffles provides a locally crossflow and globally countercurrent flow arrangement so that the recirculating, passive zones can be largely eliminated. Enhancement of heat transfer has been verified by first law (global heat transfer coefficient) and second law (entropy generation) analyses. (C) 2013 Elsevier Inc. All rights reserved.

引用

页码：119 / 126

页数：8

共 47 条

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