Thermal performance of a polymer composite webbed-tube heat exchanger

被引：15

作者：

Cevallos, Juan ^{[1
]}

Bar-Cohen, Avram ^{[1
]}

Deisenroth, David C. ^{[1
]}

机构：

[1] Univ Maryland, Dept Mech Engn, College Pk, MD 20740 USA

来源：

INTERNATIONAL JOURNAL OF HEAT AND MASS TRANSFER | 2016年 / 98卷

基金：

美国国家科学基金会;

关键词：

Heat exchangers; Polymer composites; Polymer heat exchangers; Thermal anisotropy; Thermal conductivity;

D O I：

10.1016/j.ijheatmasstransfer.2016.03.075

中图分类号：

O414.1 [热力学];

学科分类号：

摘要：

This paper presents an in-depth study of the thermal performance of a gas-to-liquid "webbed tube" polymer heat exchanger. The heat exchanger was fabricated from a thermally enhanced polymer composite, consisting of a Nylon 12 matrix filled with carbon fibers. A laboratory-scale prototype heat exchanger was built using injection molding and tested on a cross-flow air-to-water heat exchange apparatus. The thermal performance of this laboratory webbed-tube polymer composite heat exchanger is studied in depth through an extended set of experiments, application of existing empirical correlations, and detailed computational fluid dynamic (CFD) simulations. The laboratory webbed-tube heat exchanger prototype provided a maximum UA value of 1.8 W/K and a volume-specific heat transfer coefficient of 14 kW/m(3) K. The experimental results, in conjunction with numerical simulations, were used to determine an "effective" thermal conductivity of 1.8 W/m K for the injection-molded Nylon-carbon composite material in the webbed-tube heat exchanger configuration. (C) 2016 Elsevier Ltd. All rights reserved.

引用

页码：845 / 856

页数：12

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