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시설하우스의 폐열을 이용한 열펌프시스템의 성능평가에 관한 연구

A Study on the Performance Evaluation of Heat Pump System Using Waste Heat in Greenhouse

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키워드

주제분류기타공학

초록

This study was conducted to develop a heat pump system to utilize waste heat within the greenhouse during the daytime in winter season. The system runs at 8 am to 6 pm for the heat storage operation, and from 6 pm to 8 am of the next day for the heat radiant work. In the case of the heat storage operation, the average solar radiation was 168.3W/m² with 16.3℃ outside temperature. The COPs of the system shows 4.59 in this operation mode. When the temperature goes up to 18.6℃, the system COPs reached at 5.10. On the other hand, the COPh of the system in heat radiation mode shows 2.63. In this case, the inside of the greenhouse temperature was reaches at 24.7℃ when the outside temperature was 12.9℃.

Abstract

This study was conducted to develop a heat pump system to utilize waste heat within the greenhouse during the daytime in winter season. The system runs at 8 am to 6 pm for the heat storage operation, and from 6 pm to 8 am of the next day for the heat radiant work. In the case of the heat storage operation, the average solar radiation was 168.3W/m² with 16.3℃ outside temperature. The COPs of the system shows 4.59 in this operation mode. When the temperature goes up to 18.6℃, the system COPs reached at 5.10. On the other hand, the COPh of the system in heat radiation mode shows 2.63. In this case, the inside of the greenhouse temperature was reaches at 24.7℃ when the outside temperature was 12.9℃.

참고문헌 (9)

  1. Sa Gyun Kim, "Management Counterplan and Protected Horticulture Affected by Rising of Oil Prices", The Korean Society for Bio-Environment Control, 15(1), pp.1~8 (2002)
  2. Survey on Insulation and Heating of Greenhouse Grown Fruit Vegetables in Southern Region, "J. K. Kwon", KSHS, 218~218 (1999)
  3. Byoung Woo Park, "Flower Industry And development challenges", Monthly Bulletin of Nonghyup research, 12 (1996)
  4. Choi Dong-Ho, "Evaluation of Heating Performance and Analysis of Heating Loads in Single Span Plastic Greenhouse with Electrical of Hot-Air Heating", Protected Horticulture and Plant Factory, 8(8), pp.136~149 (1999)
  5. Chi S.W., "Heat Pipe Theory and Practice", pp.15~34 (1976), Willey
  6. G. L. Morrison, "Water in glass Evacuated Tube Solar Water Heaters", Solar energy, 76, pp.135~140 (2004)
  7. S. B. Riffat, "Developing a theoretical model to investigate thermal performance of a thin membrane heat pipe solar collector", Applied Thermal Engineering, 25, pp.899~915 (2005)
  8. S. A. Kalogirou, "The potential of solar industrial process heat applications", Applied Energy, 76, pp.337~361 (2003)
  9. H.K. Song, "A Study on the Heat pump - Latent Heat Storage System for the Greenhouse Heating", pp.113~120 (1997), Korean Society for Agricultural Machinery

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