Journal of the Institute of Convergence Signal Processing (융합신호처리학회논문지)

The Korea Institute of Convergence Signal Processing (한국융합신호처리학회)
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CFD on the possibility of performance evaluation of heat pump outdoor unit in duct-type constant temperature chamber

덕트형 항온챔버에서 히트펌프 실외기의 성능평가 가능성에 대한 CFD

  • Kim, Jong-Ryeol (Dept. of Refrigeration & Air-conditioning Eng., Tongmyong University)
  • 김종열 (동명대학교 냉동공조공학과)
  • Received : 2021.09.01
  • Accepted : 2021.09.30
  • Published : 2021.09.30
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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.

에너지를 절약하기 위해 고효율 히트펌프를 개발하기 위한 많은 연구가 이루어지고 있으며, 실외기 코일에 발생하는 서리가 발생하는 현상을 줄이거나 없애기 위한 연구도 동시에 이루어지고 있다. 계절과 관계없이 히트펌프의 실외기에 서리가 발생하지 않는 연구를 진행할 수 있도록 자연 상태와 동일한 조건에서 실험할 수 있는 곡선형 항온챔버를 구축하였다. 이러한 곡선형 항온챔버가 실험 장치로서 타당성을 갖추고 있는지 검증하기 위해 시뮬레이션을 하였다. CFD 조건은 곡선형 항온챔버 내에 위치한 실외기 앞의 직선형 덕트 길이를 덕트 관경의 1배, 5배, 10배, 15배로 하였다. 그 결과 덕트 관경의 10배 길이로 시뮬레이션했을 때 자연 상태와 가장 유사하다는 것을 알게 되었다.

Keywords

Acknowledgement

본 논문은 2020년도 한국연구재단의(No. 2018R1D1A1B07048601)의 지원을 받아 수행되었으며 이에 감사드립니다.

References

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