지원사업
학술연구/단체지원/교육 등 연구자 활동을 지속하도록 DBpia가 지원하고 있어요.
커뮤니티
연구자들이 자신의 연구와 전문성을 널리 알리고, 새로운 협력의 기회를 만들 수 있는 네트워킹 공간이에요.
이용수
초록· 키워드
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The thermal conductivity for the ground heat exchanger installed in the local facilities of greenhouse area at JangSu-Gun in Jeollabuk-Do was analyzed experimentally. For measuring the thermal conductivity of the ground heat exchanger, a bore hole was punched at the size of diameter 150mm, depth 160m. And a closed-type heat exchanger of high density polyethylene at the size of diameter 40mm was installed vertically.
The heated water by an electric heater was circulated through the ground heat exchanger with a pump. The inlet/outlet temperatures and the flow rates of this water are measured and the thermal conductivity was calculated. The experimental results were as follows. The inlet/outlet temperatures of the ground heat exchanger were increased rapidly until 7 hours, then they were increased gently and the difference of inlet/outlet temperature was maintained at about 4.5℃. The thermal conductivity calculated by the line source theory was 2.207W/mK.
목차
등록된 정보가 없습니다.
참고문헌 (7)
참고문헌 신청
D. J. Yim / 2007 / A study on the measurement method of multiple thermophysical properties using inverse heat conduction method / Journal of the Korean Society of Mechanical
K. H. Jung / 2007 / Regional distribution of ground thermal conductivity for vertical closed type ground heat exchanger design / Proceedings of the SAREK 2007 Winter Annual Confere
P. Mogensen / 1983 / Fluid duct wall heat transfer in duct system heat storage / Proceedings of International Conference on Subsurface Heat Storage in Theory and Practice, Stockhol
S. Gehlin / 2002 / Thermal response test method development and evaluation / 박사 / Lulea University of Tecnology
Y. J. Kim / 2005 / Performance analysis of ground thermal conductivity by ground heat exchanger / Proceedings of the SAREK 2005 Winter Annual Conference : 161 ~ 166
K. H. Jung / 2007 / Regional distribution of ground thermal conductivity for vertical closed type ground heat exchanger design / Proceedings of the SAREK 2007 Winter Annual Confere
P. Mogensen / 1983 / Fluid duct wall heat transfer in duct system heat storage / Proceedings of International Conference on Subsurface Heat Storage in Theory and Practice, Stockhol
S. Gehlin / 2002 / Thermal response test method development and evaluation / 박사 / Lulea University of Tecnology
Y. J. Kim / 2005 / Performance analysis of ground thermal conductivity by ground heat exchanger / Proceedings of the SAREK 2005 Winter Annual Conference : 161 ~ 166
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