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남상운,허연정,심옥자,심상일,이호상 안성산업대학교 1998 論文集 Vol.30 No.-
This study was carried out to investigate energy saving effect and thermal insulation characteristics of double film water curtain system during the coldest season in greenhouse. A double film water curtain system is a ground water spraying system between double layered plastic film, and it is able to make uniform water curtain. The experimental greenhouses were plastic greenhouses of two types. A type-Ⅰ was a two-thirds arched shape and its area was 350㎡ . A type-Ⅱ was a triangle shape and its area was 190㎡. Both greenhouses were cultivated with cactus. The minimum outside air temperature ranged was -2.6 to -16.7℃ and nocturnal ambient mean temperature was -6.5℃. The experimental greenhouses have maintained the air temperature above 2℃ of type-Ⅰ and 8℃ of type-Ⅱ. The ground water spraying flow rates of these greenhouses were 7.0ℓ/㎡hr of type-Ⅰ and 4.3ℓ/㎡hr of type-Ⅱ. The overall heat transfer coefficient of type-Ⅰ greenhouse was calculated at 1.97 kcal//㎡hr℃ and type-Ⅱ was 1.44 kcal/㎡hr℃. The energy saving rate of type-Ⅰ greenhouse was estimated and 78.1% and type-Ⅱ was 98.9%.
황한철 ( Hwang Han Cheol ),김정식 ( Kim Jeong Sik ),심옥자 ( Shim Ok Ja ),김희수 ( Kim Hee Su ) 한국농공학회 1999 한국농공학회 학술대회초록집 Vol.1999 No.-
It is necessary to evaluate the location suitability for protected horticulture to plan new protected horticultural facilities in rural areas. Evaluation models for location suitability of protected horticulture in three selected regions; suburban, plain, mountainous were constructed by method of analytic hierarchy process(AHP). Evaluation models were adapted lo three case study areas, location characteristics of protected horticulture were shown in each regional features.