Uniformity principle of temperature difference field in heat transfer optimization

doi:10.1088/1674-1056/28/6/064402

Abstract

The uniformity principle of temperature difference field is very useful in heat exchanger analyses and optimizations. In this paper, we analyze some other heat transfer optimization problems in the thermal management system of spacecrafts, including the cooling of thermal components, the one-stream series-wound heat exchanger network, the volume-to-point heat conduction problem, and the radiative heat transfer optimization problem, and have found that the uniformity principle of temperature difference field also holds. When the design objectives under the given constraints are achieved, the distributions of the temperature difference fields are uniform. The principle reflects the characteristic of the distribution of potential in the heat transfer optimization problems. It is also shown that the principle is consistent with the entransy theory. Therefore, although the principle is intuitive and phenomenological, the entransy theory can be the physical basis of the principle.

Keywords: heat transfer optimization uniformity principle of temperature difference field equipartition of potential entransy theory

Received: 22 January 2019
Revised: 25 March 2019
Accepted manuscript online:

PACS:	44.05.+e	(Analytical and numerical techniques)
	44.90.+c	(Other topics in heat transfer)
	05.70.-a	(Thermodynamics)

Fund:

Project supported by the Science Fund for Creative Research Groups of National Natural Science Foundation of China (Grant No. 51621062).

Corresponding Authors: Xin-Gang Liang
E-mail: liangxg@mail.tsinghua.edu.cn

Cite this article:

Xue-Tao Cheng(程雪涛), Xin-Gang Liang(梁新刚) Uniformity principle of temperature difference field in heat transfer optimization 2019 Chin. Phys. B 28 064402

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[1]	Optimization of combined endoreversible Carnot heat engines with different objectives Cheng Xue-Tao (程雪涛), Liang Xin-Gang (梁新刚). Chin. Phys. B, 2015, 24(6): 060510.

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