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CFD on the possibility of performance evaluation of heat pump outdoor unit in duct-type constant temperature chamber  

Kim, Jong-Ryeol (Dept. of Refrigeration & Air-conditioning Eng., Tongmyong University)
Publication Information
Journal of the Institute of Convergence Signal Processing / v.22, no.3, 2021 , pp. 116-121 More about this Journal
Abstract
A lot of research is being done to develop a high-efficiency heat pump to save energy, and research to reduce or eliminate the phenomenon of frost occurring in the outdoor unit coil is also being conducted at the same time. A curved constant temperature chamber was constructed that can be tested under the same conditions as in the natural state so that the research can be conducted in which frost does not occur on the outdoor unit of the heat pump regardless of the season. Simulations were performed to verity whether such a curved constant temperature chamber has feasibility as an experimental device. For CFD conditions, the length of the straight duct in front of the outdoor unit located in the duct-type constant temperature chamber was 1, 5, 10 and 15 times the diameter of the duct. As a result, it was found that a straight space must be secured 10 times the diameter of the duct.
Keywords
Cold region; Frosting; Defrosting; Heat pump; Duct-type constant temperature chamber;
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  • Reference
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