Journal of the Korean Solar Energy Society (한국태양에너지학회 논문집)

The Korean Solar Energy Society (한국태양에너지학회)
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Experimental Study on The Running Characteristics of Showcase Using Cold Storage System

과냉각 축냉시스템을 적용한 쇼케이스의 운전 특성에 대한 실험적 연구

  • Lee, Dong-Won (Korea Institute of Energy Research) ;
  • Kim, Jeongbae (Dept. of Energy System Engineering, Korea National University of Transportation)
  • 이동원 (한국에너지기술연구원) ;
  • 김정배 (한국교통대학교 에너지시스템공학과)
  • Received : 2012.07.13
  • Accepted : 2012.11.30
  • Published : 2012.12.30
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Abstract

The purpose of this study was to show how tomaintain high efficiency and to use reasonably when being applied the cold-heat storage systems to the showcase. An experimental study was performed to manufacture the showcase system in a laboratory. Comparing the result at general operation condition with that of the new condition using ice storage system, this study showed the effects of the refrigerant sub-cooling, and with using inverter. Using ice storage system, the ice making process was operated during midnight being not needed the cooling of the showcase through the continuous running of the condenser unit. And then, the refrigerant was sub-cooled using the stored cold-heat after being discharged from the air cooling condenser during the day time. Through the experiments, the load transfer rate for the showcase using inverter and ice storage was estimated about 30.0%. And showed that the total power consumption of the showcase with inverter could be reduced about 37% than that of the showcase without inverter.

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References

  1. Park, S-S, and Kim, Y-R., Technology of the ice storage system, Magazine of the SAREK, vol.30, no.6, pp.6-15, 2001.
  2. Lee, D-W., Joo, M-C., Choi, B-J. and Kim, W., Sub-coolinge ffect using cold storage system, Proceedings of the SAREK, 2007, Summer Annual Conference, pp.1067-1071, 2007.
  3. Shin, Y-H., Oh, Y-G. and Park, K-H., Measurement and analysis of showcase field data, Proceedings of the SAREK, 2005, vol.17, no.5, pp.436-443, 2005.