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서원명 ( Suh Won-myung ),윤용철 ( Yoon Yong-cheol ),김응규 ( Kim Woong-gyu ) 한국농공학회 2002 한국농공학회 학술대회초록집 Vol.2002 No.-
King Oyster(Pleurotus eryngii) is one of the most promising mushrooms produced on the domestic farms. The quality as well as quantity of King oyster is sensitively affected by micro climate factors such as temperature, relative humidity, CO<sub>2</sub> concentration, and light intensity. To safely produce high-quality King oysters year round, it is required that the environmental factors be carefully controlled by well designed structures equipped with various facilities and control systems. In this study, we are focusing on carrying out growing experiment to find out reasonable range of each environmental factor together with economic and safe structures influencing on the optimal productivity of king oyster mushroom. The optimal productivity will be evaluated by considering the quality and quantity of mushroom production, energy requirements, facility construction and management cost, etc.
서원명 ( Suh Won Myung ),강종국 ( Kang Jong Guk ),윤용철 ( Yoon Yong Cheol ),김정섭 ( Kim Jung Sub ) 한국농공학회 2000 한국농공학회 학술대회초록집 Vol.2000 No.-
This study was performed to investigate the performance of heat recovery device attached to exhaust gas funnel connected to combustion chamber of greenhouse heating system. The experiment heat recovery system is mainly consisted of LPG combustion chamber and two heat recovery units; unit-A is attached directly to the exhaust gas funnel, and unit-B is connected with unit-A. Heat recovery performance was evaluated by estimating total energy amount by using enthalpy difference between two measurement points together with mass flow rate of gas and/or air passing through each heat recovery unit depending on 5 different flow rates controlled by voltage meter. The results of this experimental study, such as heat exchange behavior of supply air pipes and exhaust air passages crossing the pipes, pressure drop between inlet and outlet, heat recovery performance of exchange unit, etc., will be used as fundamental data for designing optimum heat recovery device to be used for fuel saving purpose by reducing heat loss amounts mostly wasted outside of greenhouse through funnels.
서원명 ( Suh Won Myung ),윤용철 ( Yoon Yong Cheol ),이종렬 ( Lee Jong Yeol ),이석건 ( Lee Suk Gun ) 한국농공학회 1999 韓國農工學會誌 : 전원과 자원 Vol.41 No.1
This study was performed to improve undesirable warm greenhouse environment by fog cooling system in summer season. The results of droplet size analysis and cooling effects for fog cooling system are summarized as follows: 1. At the pump pressure of 70kgf/cm<sup>2</sup>, the mean (SMD) drop size was 22.6㎛ and the maximum and minimum drop size was 45.68㎛ and 1.73㎛, respectively, and almost all of the drop size was less than 40㎛. 2. The temperature of fog cooling greenhouse with 60% shading was dropped more than 2℃ below the ambient temperature, while the greenhouse temperature without shading was 1℃ higher than the ambient temperature. 3. It was found that fog spraying intervals were significantly influential on cooling effect. 4. When the greenhouse was ventilated sufficiently by natural vent system, green house temperature could be maintained by 2.5℃ lower than the ambient temperature, while it was difficult to drop the greenhouse temperature below ambient temperature without sufficient ventilation. 5. It was found that the temperature of experimental greenhouse could be maintained 3℃ to 14℃ lower that of control greenhouse though there were variations depending on experimental and weather conditions.
서원명(Won Myung Suh),배용한(Yong Han Bae),유영선(Young Sun Ryou),이성현(Sung Hyoun Lee),김현태(Hyeon Tae Kim),김영주(Yong Ju Kim),윤용철(Yong Cheol Yoon) (사)한국생물환경조절학회 2011 생물환경조절학회지 Vol.20 No.2
본 연구는 주간에 온실 내에서 환기로 인하여 배출되는 잉여 태양에너지를 축열할 적정 축열 시스템 설계의 기초자료를 제공할 목적으로 확보한 표준기상년(TMY; Typical Meteorological Year) 데이터를 이용하여 주요 온실 형태별로 잉여 태양에너지를 분석하였다. 그 연구결과를 요약하면 다음과 같다. 07-자동화-l형 및 08-자동화-l형의 경우, 온실형태에 관계없이 매우 유사한 열수지 경향을 보였다. 즉, 잉여 태양에너지가 차지하는 비율은 온실 형태별로 각각 약 20.0~29.0% 및 20.0~29.0% 정도로 나타났다. 그리고 소요 난방에너지를 온실 형태별로 각각 약 54.0~225.0% 및 53.0~218.0% 정도 보충할 수 있을 것으로 나타났다. 07-단동-l형과 07-단동-3형의 경우도 온실형태에 관계없이 매우 유사한 열수지 경향을 보였다. 즉, 잉여 태양에너지가 차지하는 비율은 온실 형태별로 각각 약 20.0~26.0% 및 21.0~27.0% 정도로 나타났다. 그리고 소요 난방에너지를 온실 형태별로 각각 약 57.0~211.0% 및 62.0~228.0% 정도 보충할 수 있는 량이다. 그리고 온실형태에 관계없이 대관령 및 수원지역을 제외하면 나머지 지역은 잉여 태양에너지만으로도 난빙에너지를 충당할 수 있음을 알 수 있었다. This study is about an analysis of surplus solar energy by important greenhouse type using Typical Meteorological Year (TMY) data which was secured in order to provide basic data for designing an optimum thermal storage system to accumulate surplus solar energy generated in greenhouses during the daytime. The 07-auto-1 and 08-auto-1 types showed similar heat budget tendencies regardless of greenhouse types. In other words, the ratios of surplus solar energy were about 20.0~29.0% regardless of greenhouse type. About 54.0~225.0% and 53.0~218.0% of required heating energy wi Ⅱ be able to be supplemented respectively according to the greenhouse types. The 07-mono-1 and 07-mono-3 types also showed similar heat budget tendencies regardless of greenhouse types. In other words, the ratios of surplus solar energy were about 20.0~26.0% and 21.0~27.0% respectively by greenhouse type. About 57.0~211.0% and 62.0~228.0% of required heating energy will be able to be supplemented by greenhouse type. Except for Daegwallyeong and Suwon area, other regions can cover heating energy only by surplus solar energy, according to the study.