Investigating performance of microchannel evaporators for automobile air conditioning with different port structures | Zendy

Guoliang Zhou | Zendy; Lin Su | Zendy; Qia Cheng | Zendy; Longbing Wu | Zendy

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Investigating performance of microchannel evaporators for automobile air conditioning with different port structures

Author(s) -

Guoliang Zhou,

Lin Su,

Qia Cheng,

Longbing Wu

Publication year - 2017

Publication title -

aip advances

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.421

H-Index - 58

ISSN - 2158-3226

DOI - 10.1063/1.4986400

Subject(s) - evaporator , refrigerant , microchannel , thermal expansion valve , pressure drop , air conditioning , calorimeter (particle physics) , test bench , materials science , cooling capacity , nuclear engineering , mechanical engineering , thermodynamics , engineering , electrical engineering , heat exchanger , physics , detector , nanotechnology

Microchannel evaporator has been widely applied in automobile air conditioning, while it faces the problem of refrigerant maldistribution which deteriorates the thermal performance of evaporator. In this study, the performances of microchannel evaporators with different port structures are experimentally investigated for purpose of reducing evaporator pressure drop. Four evaporator samples with different port number and hydraulic diameter are made for this study. The performances of the evaporator samples are tested on a psychometric calorimeter test bench with the refrigerant R-134A at a real automobile air conditioning. The results on the variations of the evaporator pressure drop and evaporator surface temperature distribution are presented and analyzed. By studying the performance of an evaporator, seeking proper port structure is an approach to reduce refrigerant pressure drop as well as improve refrigerant distribution

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