온실난방을 위한 히트펌프의 성능에 관한 연구 = A Study on the Greenhouse Heating Performance of Heat Pump System

다국어 초록 (Multilingual Abstract)

This experiment was carried out to study on the effect of greenhouse heating by water-to-water heat pump system employing heating water tank(ground water) as the heat source.
Followings are the results obtained from this study ;
1. The heat amount absorbed from evaporator and the heat amount rejected from condenser were approximately 9,000~12,000kcal/h and 13,000~17,000kcal/h, respectively.
2. The heat efficiencies of evaporator and condenser used in this experiment were approximately 79% and 83%, respectively.
3. The maximum heating load estimated for the experimental greenhouse was about 18,000~25,000kcal/h, which was found to be about 28~32% higher than the heating capacity of the heat pump system adopted for this experiment.
4. The coefficients of perfomance(COP) for the heat pump and the total heat pump system were approximately 2.9~3.5 and 1.5~2.4, respectively.
5. The coefficient of perfomance(COP) calculated from the Mollier Diagram was about 3.2 ~ 3.4, which was reasonably close to the COP estimated on the basis of measured values.
6. The temperature of experimental greenhouse heated by the heat pump system could be maintained about 12~15℃ higher than that of a control greenhouse.