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Subject

Characteristics of the Stored and Released Thermal Energy in Plastic Greenhouse with Underground Heat Exchange System
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지중열교환(地中熱交換) 온실(溫室)의 축열(蓄熱) 및 방열(放熱) 특성(特性)

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Type
Academic journal
Author
Lee, C.H. (전북대학교 농과대학 농업기계공학과) Park, S.J. (전북대학교 농과대학 농업기계공학과) Kim, Y.H. (전북대학교 농과대학 농업기계공학과) Kim, C.S. (전북대학교 농과대학 농업기계공학과) Rhee, J.Y.
Journal
한국농업기계학회 바이오시스템공학(구 한국농업기계학회지) 바이오시스템공학 제19권 제3호 KCI Accredited Journals
Published
1994.1
Pages
222 - 231 (10page)

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Characteristics of the Stored and Released Thermal Energy in Plastic Greenhouse with Underground Heat Exchange System
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The efficient use of solar energy for greenhouse heating is one of the most obvious applications to save the heating energy for greenhouse culture. To increase the efficiency of solar energy utilization in plastic greenhouse, underground heat exchange system was installed. Characteristics of the stored and released thermal enery in plastic greenhouse with underground heat exchange system was analyzed. The average stored and released thermal energy in this system were 1,484 $kJ/m^2$ day and 555 $kJ/m^2$ day, respectively. The average coefficient of performance of heat exchange system was found to be 2.86. Also an attempt was made to predict the air temperature in plastic greenhouse. The agreement between the results of prediction and that of measurement was relatively good.

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