충적대수층 계간축열 냉난방 시스템의 온실 난방 효과 (Effects of the Cooling and Heating System with Seasonal Thermal Storage in Alluvial Aquifer on Greenhouse Heating)

서지정보

· 발행기관 : 한국농공학회
· 수록지 정보 : 한국농공학회논문집 / 59권 / 6호 / 127 ~ 135페이지
· 저자명 : 문종필, 강금춘, 김형권, 이태석, 오성식, 진병옥

초록

In this study, a cold well and a warm one with the distance of 100 m were installed in the alluvial aquifer. Groundwater used as the heat and the cold source of heat pump was designed to flow into the warm and the cold well with a diameter of 200 mm. In order to increase the heat and cold storage in aquifer, six auxiliary wells with the diameter of 50 mm and the depth of 30 m were installed at an interval of 5 m from the main well. Also, heat pump 50 RT, the thermal tank 40 m3 , and a remote control and monitoring system were installed in three single-span greenhouses (2,100 m2) for growing tomato in Buyeo, Chungcheongnam-do. According to the aquifer heat storage test which had been conducted from Aug. 31 to Sep. 22, 2016, warm water of 850 m3 was found to flow into warm well. The temperature of the injected water was 30 ℃ (intake temperature : 15 ℃), and the heat of 12.8 Gcal was stored. The greenhouse heating test in winter had been conducted from Nov. 21, 2016 to Apr. 30, 2017. On Nov. 21, 2016 when heating greenhouse started, the aquifer temperature of the warm well was 18.5 ℃. The COP for heating with water source at 18.5 ℃ was 3.8. The intake water temperature of warm well was gradually lowered to the temperature of 15 ℃ on Jan. 2, 2017 and the heat pump COP was measured to be 3.2 at that time. As a result, the heat pump COP was improved by 18 %. and retrieval heat was 8 Gcal, the retrieval rate of heat stored in aquifer was estimated at 63 %.

영어초록

In this study, a cold well and a warm one with the distance of 100 m were installed in the alluvial aquifer. Groundwater used as the heat and the cold source of heat pump was designed to flow into the warm and the cold well with a diameter of 200 mm. In order to increase the heat and cold storage in aquifer, six auxiliary wells with the diameter of 50 mm and the depth of 30 m were installed at an interval of 5 m from the main well. Also, heat pump 50 RT, the thermal tank 40 m3 , and a remote control and monitoring system were installed in three single-span greenhouses (2,100 m2) for growing tomato in Buyeo, Chungcheongnam-do. According to the aquifer heat storage test which had been conducted from Aug. 31 to Sep. 22, 2016, warm water of 850 m3 was found to flow into warm well. The temperature of the injected water was 30 ℃ (intake temperature : 15 ℃), and the heat of 12.8 Gcal was stored. The greenhouse heating test in winter had been conducted from Nov. 21, 2016 to Apr. 30, 2017. On Nov. 21, 2016 when heating greenhouse started, the aquifer temperature of the warm well was 18.5 ℃. The COP for heating with water source at 18.5 ℃ was 3.8. The intake water temperature of warm well was gradually lowered to the temperature of 15 ℃ on Jan. 2, 2017 and the heat pump COP was measured to be 3.2 at that time. As a result, the heat pump COP was improved by 18 %. and retrieval heat was 8 Gcal, the retrieval rate of heat stored in aquifer was estimated at 63 %.

참고자료

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