온실단지내 폐영농자재의 처리에 관한 실태조사

윤용철(Yong Cheol Yoon),서원명(Won Myung Suh),김영주(Young Ju Kim),최만권(Man Kwon Choi),배용한(Yong Han Bae) 한국생물환경조절학회 2008 한국생물환경조절학회 학술발표논문집 Vol.17 No.1

온실설비 작동용 태양광발전시스템의 발전 성능 분석

윤용철(Yong Cheol Yoon),배용한(Yong Han Bae),유영선(Young Sun Ryou),이성현(Sung Hyoun Lee),서원명(Won Myung Suh) (사)한국생물환경조절학회 2009 생물환경조절학회지 Vol.18 No.3

본 연구는 온실 운영에 필요한 전력량을 확보함으로서 온실경영비 절감을 목적으로 우선 태양광발전시스템을 온실의 인접한 건물의 옥상에 설치하여 기상상태에 따른 발전량을 실험적으로 검토하였다. 연구결과를 요약하면 다음과 같다. 실험기간 동안 최고, 평균 및 최저온도는 각각 0.4~34.1, -6.1~22.2 및 14.1~16.7℃ 정도의 범위에 있었다. 그리고 일사량의 경우, 최대, 평균 및 최저값은 각각 28.8MJㆍm?², 14,9MJㆍm?² 및 0.6MJㆍm?² 정도였고, 전력은 일사량에 비례해서 증가하지 않고 약 750W 전후에서 거의 일정한 것을 알 수 있었다. 일일 최대, 평균 및 최소 소비전력량은 각각 약 5.2㎾h, 2.5㎾h 및 0㎾h 정도였다. 본 실험에 사용된 시스템의 평균 소비전력량을 기준으로 보면, 온풍기의 용량 및 작동시간이 작은 경우는 충분하지만 큰 경우는 부족한 것으로 나타났다. 온풍기의 용량이 큰 경우, 어레이 면적이 현재의 약 3배인 약 21㎡ 정도이면 평균 전력량으로 충분할 것으로 판단되었다. 물론 어레이의 온도가 높아지는 한 여름철에는 일사량에 비례해서 발생 전력이 증가하지 않은 것으로 나타났지만, 현재까지 실험결과로 보면, 두 인자 간에 상관계수가 0.84 정도로 상관관계가 높은 것으로 나타났다. For the purpose of reducing the cost for greenhouse operation by acquiring the electric power necessary for it, this study installed a solar photovoltaic system on the roof of the building adjacent to green-houses and experimentally examined the quantity of power generation based on weather conditions. The results of the study are as per the below: The maximum, average and minimum temperature while the experiment was conducted was 0.4~34.1, -6.1~22.2, and -14.1~16.7℃ respectively, and the solar radiation was 28.8MJㆍm?² (maximum), 14.9MJㆍm?² (average), and 0.6MJㆍm?² (minimum). The quantity of electric power didn't increase in proportion to the quantity of solar radiation and instead, it was almost consistent around 750W. Daily maximum, average and minimum consumption of electric power was 5.2㎾h, 2.5㎾h and 0㎾h respectively. Based on the average electric power consumption of the system used for this experiment, it was sufficient in case the capacity and the working time of a hot blast heater are small, but it was short in case they are big. In case the capacity of the hot blast heater is big, the average electric power quantity will be sufficient for array area 21㎡, about three times of the present area. In summer when the temperature of the array becomes high, the generation of electric power didn't increase in proportion to the quantity of solar radiation, but this experiment result shows a high correlation between two factors (coefficient of correlation 0.84).

온실단지내 폐영농자재의 처리에 관한 실태조사 (Ⅱ) - 진주, 김해지역을 중심으로 -

윤용철 ( Yong-cheol Yoon ),서원명 ( Won-myung Suh ),김영주 ( Young-ju Kim ),최만권 ( Man-gwon Choi ),배용한 ( Yong-han Bae ) 한국농공학회 2008 한국농공학회 학술대회초록집 Vol.2008 No.-

The purpose of this study was to suggest effective management plans for farming material waste that is generated inside greenhouse complexes, and to review the management status of the farming material waste for farming facilities. The research results are summarized as follows. The farming waste that is generated in Korea has been treated the same as life waste, and the data for the waste is still being managed however, there was no information about the supply amounts which lowered the reliability. It was not easy to research the management status of the farming equipment supplied to the farms because they are purchased based on need however, it was determined that the system that can manage from the supply, collection, recycling, and treatment steps by using local agriculture association and agriculture technology management centers. Moreover, it was determined that the environmental friendly materials need to be further developed to recycle the farming materials. Especially, for the public dumps, not only financial support but also the support of the local residents is required. The farmer’s groups, villages or local governments can advertise and provide education for residents so they can be the guardians of their local environment.

파프리카 재배용 1-2W형 온실 구조의 안정성 검토(Ⅰ)

서원명 ( Won-myung Suh ),윤용철 ( Yong-cheol Yoon ),배용한 ( Yong-han Bae ),최만권 ( Man-kwon Choi ) 한국농공학회 2008 한국농공학회 학술대회초록집 Vol.2008 No.-

This study was performed to check the structural safety of modified 1-2W Greenhouses to be utilized for growing Paprika. This type of greenhouse was derived from being remodeled by enhancing the column height of conventional 1-2W type greenhouses. According to the results of structural analysis performed by SAP-2000, there was not significant change in critical snow depth in spite of increasing the column height of 1.2m by welding. But the critical wind velocities were shown to be 28.5m/s~40.6m/s, which were 10∼31% lower wind velocities compared with those critical velocities estimated for typical type of 1-2W greenhouse. Under the wind loads, those maximum section forces such as shear force, axial force, and bending moment, together with the deformed frame shape of strained greenhouse, were almost similar in both typical type and modified type. Maximum bending moment of column was found at eave's height of column on windward side. Under the snow loads, those maximum section forces such as shear force, axial force, and bending moment, together with the deformed frame shape of strained greenhouse, were almost similar in both typical type and modified type. Maximum section forces except axial force was found at eave's height of column. Maximum axial force was found at inner column. Soil bearing capacity together with the total foundation resistance against wind upheaval was found to be consistently safe enough to resist to both wind load and snow load.

파프리카 재배용 용접 파이프 기둥재의 구조적 안전성 검토(Ⅱ)

서원명 ( Won-myung Suh ),윤용철 ( Yong-cheol Yoon ),배용한 ( Yong-han Bae ),최만권 ( Man-kwon Choi ) 한국농공학회 2008 한국농공학회 학술대회초록집 Vol.2008 No.-

파프리카 재배용 용접 파이프 기둥재의 구조적 안전성 검토

서원명(Won Myung Suh),윤용철(Yong Han Bae),배용한(Yong Han Bae),최만권(Man Kwon Choi) 한국생물환경조절학회 2008 한국생물환경조절학회 학술발표논문집 Vol.17 No.1

온실내 잉여 태양에너지 산정 (I) - 1-2W형을 중심으로 -

서원명,배용한,유영선,이성현,윤용철,Suh, Won-Myung,Bae, Yong-Han,Ryou, Young-Sun,Lee, Sung-Hyoun,Yoon, Yong-Cheol 한국농공학회 2009 한국농공학회논문집 Vol.51 No.5

This research performed to analyze surplus solar energy, which is generated from a greenhouse during daytime, and to make the basic materials for designing thermal energy storage system for surplus solar energy. For this goal, it analyzed the surplus solar energy coming from two types of greenhouse. The results of this research are as per the below: In the case of 1-2W-type greenhouse, this research gave the same temperature and ventilation condition regardless of regions, but it was judged that the quantity of surplus solar energy could be greatly changed, depending on the energy consumed for the photosynthesis and evapotranspiration of crops in the greenhouse, on the heating temperature during daytime and night, on the existence/non-existence of a curtain and its warming effect, and on the ventilation temperature suitable for the overcoming of high temperature troubles or for the optimum cultivation temperature. In the case of a single-span greenhouse, there was a big difference in energy incoming and outgoing by month, but throughout seasons, 85.0 % of the total energy put into the greenhouse was solar energy and the energy input by heating was just 15.0 % of the total. 26.4 % of the total energy input for the greenhouse was used for photosynthesis and evapotranspiration of crops, and 44.2 % of the remaining 73.6 % went out in the form of radiant heat through the surface of the greenhouse. That is, 25.2 % of the total energy loss was just the surplus solar energy. 67.6 % of the total heating energy was concentrically used for 3 months from December to February next year, but the surplus solar energy during the same period was just 19.4 % of the total annual quantity so it was found that the given condition was more restrictive in directly converting the surplus heat into greenhouse heating. Under the disadvantageous circumstance of 3 months from December to February next year, it was possible to supplement 28 % (December) $\sim$ 85 % (February) of heating energy with surplus solar energy.

태안 시설원예단지의 온실 냉난방 부하 분석

서원명,배용한,허해준,곽철순,이석건,이종원,윤용철,Suh, Won-Myung,Bae, Yong-Han,Heo, Hae-Jun,Kwak, Cheul-Soon,Lee, Suk-Gun,Lee, Jong-Won,Yoon, Yong-Cheol 한국농공학회 2009 한국농공학회논문집 Vol.51 No.6

This study was conducted in the process that the basic plan of the formation of the thermal energy complex in the Iwon reclaimed land of Taean was being made. Targeting for the large-sized greenhouse to be made in this area, it examined the cooling and heating load and the amount of ventilation, and also analyzed the economic efficiency of heating. The research results are as per the below: The minimum ambient temperature of this area was measured on January 7, 2001, which was $-18.7^{\circ}C$, and the maximum ambient temperature of this area was measured on July 24, 1994, which was $36.7^{\circ}C$. The maximum heating load was 39,011 MJ/h, but the date when the maximum heating load was not consistent with the date when the minimum temperature was measured. The maximum cooling load was 88,562MJ/h, It was approximately 2.3 times of the maximum heating load, which was measured at 14:00 hours on September 4, 2000. The maximum amount of ventilation heat was 138,639MJ/h. Assuming the rate of solar heat use as 10%, 20%, 50%, and 100%, the total sum of cost-benefit would be ￦-193,450,000, ￦-634,930,000, ￦-3,372,960,000, and ￦-9,850,420,000, respectively 20 years later. The break-even point of the geothermal heat pump would be about 4 years for 10% use, about 3 years for 20% or 50% use, and approximately 6 years for 100% use. It was found that 50% use would be most advantageous. In case two systems are combined, the break-even point will be 10 years, 8 years, and 11 years respectively.

온실내 잉여 태양에너지 산정(Ⅱ)

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.

착색단고추 재배용 1-2W형 개조온실 구조의 안정성 검토

서원명(Won-Myung Suh),최만권(Man-Kwon Choi),배용한(Yong-Han Bae),이종원(Jong-Won Lee),윤용철(Yong-Cheol Yoon) (사)한국생물환경조절학회 2008 생물환경조절학회지 Vol.17 No.3

본 연구는 1-2W형 온실의 구조를 개조하여 착색단 고추 재배온실로 이용하고 있는 온실의 구조의 안정성을 검토하였다. SAP-2000에 의한 구조해석 결과 1-2W 기본형 온실의 기둥을 1.2m 높였을 경우, 구조물이 견딜 수 있는 한계적설심은 변화는 거의 없으나 한계풍속은 약 26.0~41.0㎧ 정도로서 기본형에 비하여 약 3~18% 정도 감소하는 것으로 나타났다. 풍하중 작용시 변형도를 비롯하여 축방향력, 전단력, 휨모멘트 등의 최대단면력은 기본형이나 개조형에 관계없이 거의 유사한 경향으로 나타났으며, 최대단면력은 풍상측의 처마높이 부위에서 발생하는 것으로 나타났다. 설하중 작용시 변형도를 비롯하여 축방향력, 전단력, 휨모멘트 등의 최대단면력은 기본형이나 개조형에 관계없이 거의 유사한 경향으로 나타났으며, 축방향력을 제외한 최대단면력은 처마높이 부위에서 발생하였으며, 최대축방향력은 내측기둥에서 발생하였다. 한계적설심에 대한 내측기둥의 좌굴은 모두 안전한 것으로 나타났으며 세장비 또한 제한값 범위내에 들어 기본형 및 개조형 모두 만족하였다. 기초의 인발저항력과 지내력은 기본형과 개조형에 관계없이 모두 안전한 것으로 나타났다. This study was performed to check the structural safety of modified 1-2W Greenhouses to be utilized for growing Paprika. This type of greenhouse was derived from being remodeled by enhancing the column height of conventional 1-2W type greenhouses. According to the results of structural analysis performed by SAP-2000, there was not significant change in critical snow depth in spite of increasing the column height of 1.2 m by welding. But the critical wind velocities were shown to be 26.0~41.0 ㎧, which were 3~18% lower wind velocities compared with those critical velocities estimated for typical type of 1-2W greenhouse. Under the wind loads, those maximum section forces such as shear force, axial force, and bending moment, together with the deformed frame shape of strained greenhouse, were almost similar in both typical type and modified type. Maximum bending moment of column was found at eave's height of column on windward side. Under the snow loads, those maximum section forces such as shear force, axial force, and bending moment, together with the deformed frame shape of strained greenhouse, were almost similar in both typical type and modified type. Maximum section forces except axial force was found at eave's height of column. Maximum axial force was found at inner column. Soil bearing capacity together with the total foundation resistance against wind upheaval was found to be consistently safe enough to resist to both wind load and snow load.