Experimental study of constructal distributor for flow equidistribution in a mini crossflow heat exchanger (MCHE)

This paper examines experimentally the effects of constructal distributors or collectors, built on a binary pattern of pores, on flow equidistribution in a multi-channel heat exchanger. Thermal performance and pressure drop have been determined with different assembly configurations of constructal d...

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Bibliographic Details
Published in:Chemical engineering and processing 2008-02, Vol.47 (2), p.229-236
Main Authors: Luo, Lingai, Fan, Zhiwei, Le Gall, Hervé, Zhou, Xinggui, Yuan, Weikang
Format: Article
Language:English
Subjects:
Applied sciences
Chemical and Process Engineering
Chemical engineering
Constructal distributor
Conventional pyramid distributor
Engineering Sciences
Exact sciences and technology
Flow maldistribution
Heat exchangers and evaporators
Hydrodynamics of contact apparatus
Mini crossflow heat exchanger (MCHE)
Pressure drops
Thermal performance
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Summary:This paper examines experimentally the effects of constructal distributors or collectors, built on a binary pattern of pores, on flow equidistribution in a multi-channel heat exchanger. Thermal performance and pressure drop have been determined with different assembly configurations of constructal distributors, conventional pyramid distributors and a mini crossflow heat exchanger (MCHE). Experimental results show that the integration of constructal distributors/collectors could homogenize the fluid flow distribution and consequently lead to a better thermal performance of the MCHE, but it also results in higher pressure drops. Among all tested assembly configurations, the configuration where the inlet is equipped with a conventional pyramid distributor, and the outlet is equipped with a constructal collector (Apec) shows a relatively better thermal performance as well as low pressure drops under experimental conditions considered.
ISSN:0255-2701
1873-3204
DOI:10.1016/j.cep.2007.02.028