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Zongqin Zhang, Ph.D., Nanjing Canatal A/C Co., Ltd
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Haijin Xu, P.E., Nanjing Canatal A/C Co., Ltd
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Xinyu Zhang, P.E., University of Rhode Island
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Weixin Zhang, P.E., Nanjing Canatal A/C Co., Ltd
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Donna M. L. Meyer, Ph.D., University of Rhode Island
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Air finned-tube evaporators and/or condensers, are the predominant type of heat exchangers used in building air conditioning applications. The compact V-shaped, or sometimes called A–shaped, finned-tube heat exchanger installation considerably enhance the capacity of heat transfer by allowing the maximum number of coils installed in a given space and increasing the total surface area of heat transfer. On the other hand, this design configuration creates noticeable problems of uneven distribution of air flow velocity over the heat exchanger surfaces, which decreases the energy efficiency of the air conditioning system. This paper uses computational methods to investigate the problems of mismatch between the air and refrigerant flow distributions and propose different engineering solutions at air flow side as well as refrigerant flow side to remedy the problems.
