Prediction and Evaluation of Dynamic Variations of the Thermal Environment in an Air-Conditioned Room Using Collaborative Simulation Method

Lin He, Shunan Zhao, Guowen Xu, Xin Wu, Junlong Xie and Shanshan Cai
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Lin He: State Key Laboratory of Air-Conditioning Equipment and System Energy Conservation & GREE Electric Appliances, Inc. of Zhuhai, Zhuhai 519070, China
Shunan Zhao: State Key Laboratory of Air-Conditioning Equipment and System Energy Conservation & GREE Electric Appliances, Inc. of Zhuhai, Zhuhai 519070, China
Guowen Xu: School of Energy and Power Engineering, Huazhong University of Science and Technology, Wuhan 430074, China
Xin Wu: School of Energy and Power Engineering, Huazhong University of Science and Technology, Wuhan 430074, China
Junlong Xie: School of Energy and Power Engineering, Huazhong University of Science and Technology, Wuhan 430074, China
Shanshan Cai: School of Energy and Power Engineering, Huazhong University of Science and Technology, Wuhan 430074, China

Energies, 2021, vol. 14, issue 17, 1-19

Abstract: In this study, a collaborative simulation method is proposed to predict dynamic variations of the thermal environment in an air-conditioned room. The room thermal environment was predicted and analyzed by varying the structural and control parameters of the air conditioner considering the dynamic coupling effect. Connections and regularities were established between the applicable parameters and evaluation indices of the thermal environment. The simulation results demonstrated the interactions among the system structural parameters, control parameters, and the thermal environment. Within a certain parameter range, the evaporator structure exhibited a significant effect on temperature uniformity and vertical air temperature difference, followed by predicted mean vote (PMV) and draught rate (DR). The associated evaluation indices were sensitive to fin spacing, tube spacing, and tube outer diameter, in the same order, which were structural parameters of the evaporator. The effect of the air supply angle on the vertical air temperature difference was evident; however, its influence on the PMV, DR, and temperature uniformity did not indicate consistent variations.

Keywords: air conditioning system; room thermal environment; dynamic coupling; evaluation indices; collaborative simulation (search for similar items in EconPapers)
JEL-codes: Q Q0 Q4 Q40 Q41 Q42 Q43 Q47 Q48 Q49 (search for similar items in EconPapers)
Date: 2021
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