친환경 농촌마을계획을 위한 주거 에너지 이용실태 조사 분석

남상운 ( Nam Sang-woon ),김대식 ( Kim Dae-sik ) 한국농공학회 2007 한국농공학회논문집 Vol.49 No.6

Actual states of energy utilizations were investigated and analyzed on three representative rural villages in Chungcheongnam-Do. Rural residents were almost using the ondol boiler as a heating facility and oil(diesel, kerosene) and electricity(night thermal-storage power service) as a heating energy. There were a few households using briquette or firewood in a fuel hole with Korean hypocaust. Most of their cooking facilities were gas ranges using LPG. The most popular hot-water supply system was an oil boiler and the next was an electricity boiler. The amount of energy use in a rural household generally showed 20,000 to 40,000 won/month of the electric power rate, 400 to 800 liter/year of the oil and 60 to 120 kg/year of the LPG. Prompt measures should be taken to promote the spread of new and renewable energy such as solar heat, biomass and wind power, etc.

地下水를 利用한 養液冷却시스템 開發에 關한 基礎研究

南相運(Nam Sang Woon),孫禎翼(Son Jung Eek),金文基(Kim Moon Ki) (사)한국생물환경조절학회 1993 시설원예‧식물공장 Vol.2 No.1

양액재배 급액제어모델 개발에 관한 기초연구

남상운 ( Nam Sang Woon ),이남호 ( Lee Nam Ho ),전우정 ( Jeon Woo Jeong ),황한철 ( Hwang Han Cheol ),홍성구 ( Hong Seong Gu ),허연정 ( Heo Yeon Jeong ) 한국농공학회 1999 韓國農工學會誌 : 전원과 자원 Vol.41 No.2

This study was conducted to develop the simple and convenient irrigation control model which can maintain the appropriate rates of irrigation and drainage of nutrient solution according to the environmental conditions and growth stages in soilless culture of cucumber. In order to obtain fundamental data for development of the model, investigation of the actual state of soilless culture practices was carried out. Most irrigation systems of soilless culture were controlled by the time clock. Evapotranspiration of cucumber in soilless culture was investigated and correlations with environmental conditions were analyzed, and its estimating model was developed. In order to develop the irrigation system which can control the amount of nutrient solution applied according to seasons, weather conditions, and growth stages, a irrigation clock control was developed. Applicability of the model was tested by simulation. Drainage rates of nutrient solution controlled by conventional time clock, integrated solar radiation, and the developed model were 61%, 20%, and 32%, respectively in cucumber perlite culture.

시설재배용 분수호스 및 점적관수 시스템의 관수균일도 분석

남상운(Sang-Woon Nam),김영식(Young-Shik Kim) (사)한국생물환경조절학회 2005 생물환경조절학회지 Vol.14 No.2

점적관수 자재 및 분수호스의 관수균일도 실험결과 사용압력과 배관길이에 따라 유출량의 차이가 큰 것으로 나타났다. 점적관수 중에서는 점적단추의 관수 균일도가 가장 높았고, 점적테잎, 점적호스의 순으로 나타났다. 관의 직경과 길이 및 유량에 띠라 다르지만 마찰에 의한 압력손실이 상당히 크므로 점적관수의 사용 압력과 배관길이 선택에 주의할 필요가 있다. 제품에 따라 약간의 차이는 있었지만 대체로 점적호스는 50m, 점적테잎은 70m 정도를 최대 배관길이로 제한하는 것이 바람직할 것으로 판단되었다. 점적단추는 실험에서 설정한 최대길이인 100m까지도 사용이 가능한 것으로 사료된다. 그러나 관수시스템의 압력을 체크하여 충분한 압력을 확보하고 있는지 검토할 필요가 있고, 부족시 별도의 가압펌프를 설치하여 적정압력 범위를 만족할 수 있도록 하며 물구멍이 막히지 않도록 필터를 설치하고 수질을 관리하는 등의 유지관리가 필요한 것으로 판단되었다. 분수호스의 경우에는 균등계수가 매우 낮아 균일한 관수를 기대할 수 없는 것으로 나타났다. 띠라서 균일한 관수 제어를 필요로 하는 높은 수준의 시설재배에서는 가능한 한 점적관수를 사용하고, 비교적 낮은 수준의 배지수분 관리가 이루어지는 시설재배에서도 분수호스를 이용할 경우 배관길이를 30~35m 이내로 제한하는 것이 바람직할 것으로 판단된다. Discharge variations of perforated hose and drip irrigation systems were examined to evaluate irrigation uniformity at different pressures and length of branch line. Evaluation using statistical uniformity indicated that button drippers performed at excellent level but drip tapes and drip hoses were a little lower level. Nominal discharge of drip irrigation systems showed at the high side within the range of regulating pressure provided by the manufacturer. It is desirable that the length of branch line for drip hose, drip tape, and button dripper should be limited to 50 m, 70 m, and 100 m, respectively. Irrigation uniformity of perforated hoses showed very low level. So it is recommended that the length of branch line for perforated hoses should be limited to 30~35 m.

양액재배 오이의 급액제어모델 개발에 관한 기초연구

남상운 ( Nam Sang Woon ),이남호 ( Lee Nam Ho ),전우정 ( Jeon Woo Jeong ),황한철 ( Hwang Han Cheol ),홍성구 ( Hong Seong Gu ),허연정 ( Heo Yeon Jeong ) 한국농공학회 1998 한국농공학회 학술대회초록집 Vol.1998 No.-

This study was conducted to develop the simple and convenient irrigation control model which can maintain the appropriate rates of irrigation and drainage of nutrient solution according to the environmental conditions and growth stages in soilless culture of cucumber. In order to obtain fundamental data for development of the model, investigation of the actual state of soilless culture practices was carried out. Most irrigation systems of soilless culture were controlled by the time clock. Evapotranspiration of cucumber in soilless culture was investigated and correlations with environmental conditions were analyzed, and its prediction model was developed. A irrigation control model based on the time clock control and there were considered seasons, weather conditions, and growth stages was developed. Applicability of the model was tested by simulation. Drainage rates of irrigation system controlled by conventional time clock, integrated solar radiation, and the developed model were 61%, 20%, and 32%, respectively in cucumber perlite culture.

이중필름 수막시스템의 보온효과

남상운(Nam Sang Woon),허연정(Heo Yeon Jeong),심옥자(Sim Ok Ja),심상일(Sim Sang Il),이호상(Lee Ho Sang) 한국생물환경조절학회 1998 한국생물환경조절학회 학술발표논문집 Vol.7 No.1

水耕溫室의 養液 冷却負荷 豫測모델 開發

南相運(Nam Sang-Woon),金文基(Kim Moon-Ki),孫禎翼(Son Jung-Eek) (사)한국생물환경조절학회 1993 시설원예‧식물공장 Vol.2 No.2

열수지 해석에 의한 온실 수경재배 작물의 증산속도 추정에 관한 연구

남상운(Sang-Woon Nam),김문기(Moon-Ki Kim) 한국태양에너지학회 1990 한국태양에너지학회 논문집 Vol.10 No.3

온실 수경재배 작물의 증산속도와 환경요인과의 관계를 규명할 목적으로 플라스틱 온실 내부 작물의 엽면 열수지식을 해석하여 온실 내부의 환경요인에 따른 엽온 및 증 산속도를 추정할 수 있는 컴퓨터 모형을 개발하였다. 여기서 개발된 모형은 실제 플라스틱 온실에서 실시한 상추의 수경재배 실험 결과를 이용하여 검증하였으며, 앞으로 다른 작물에 대한 연구가 보완된다면 이 모형을 이용하여 시설재배 작물의 물관리 연구 및 열환경 분석에 유용하게 적용할 수 있을 것으로 사료된다. The main objective of this study was to find the relationship between transpiration rate and environmental factors for crops in hydroponic culture within plastic greenhouse by using the computer model developed from the heat balance around leaves of a crop.<br/> A computer model was developed and verified through comparison with the experimental results for lettuce in hydroponic culture in a polyethylene film house.<br/> The model may be extensively used for the water management and thermal environment study of crops in protected culture, if the supplemented studies for some crops would be accomplished.

제습기를 이용한 온실 포그냉방시스템의 효율향상

남상운(Sang Woon Nam),김기성(Kee Sung Kim),Gene A. Giacomelli (사)한국생물환경조절학회 2005 생물환경조절학회지 Vol.14 No.1

본 연구는 온실에서의 제습장치 이용에 관한 기초 자료를 제공할 목적으로 지하수를 냉매로 하는 열교환기 방식의 제습장치를 제작하여 제습성능을 시험하고, 포그냉방시스템을 설치한 온실에 적용하여 제습이 증발냉각효율의 향상에 미치는 영향을 분석하였으며, 그 결과를 요약하면 다음과 같다. 제습기 성능실험 결과 지하수를 냉매로 이용할 경우 포그냉방시스템을 적용한 온실의 제습은 충분히 가능한 것으로 확인되었다. 냉방 온실의 기온을 32℃로 설정할 때 냉매인 지하수의 온도가 15℃에서 18, 21, 24℃로 높아지면 제습량은 각각 17.7%, 35.4%, 52.8% 감소하는 것으로 나타났다. 또한 지하수 유량을 75%, 50%로 줄이면 제습량은 각각 12.1 %, 30.5% 감소하는 것으로 나타났다. 이러한 결과로 미루어 볼 때 지하수를 이용한 제습기의 설계에 있어서 이용 가능한 유량과 온도가 중요한 인자임을 알 수 있다. 포그냉방온실에 제습기를 설치함으로서 뚜렷한 냉방효율 개선을 확인할 수 있었다. 환기율 0.7 회ㆍmin?¹정도의 자연환기 상태에서 포그냉방 온실의 환기에 의한 제습율은 53.9~74.4%였으며, 제습기를 가동할 경우 75.4~95.9%까지 높아졌다. 제습기 설계유량과 18℃의 지하수를 사용할 경우 0.36 회ㆍmim?¹정도의 환기율에서도 포그시스템 작동으로 인하여 발생하는 분무량을 완전히 제거할 수 있는 것으로 분석되었다. 따라서 제습기를 이용하여 자연환기 온실에서의 포그 냉방 효율을 충분히 높힐 수 있을 것으로 판단되었다. In order to provide fundamental data on utilization of dehumidifier in greenhouses, a condensing type dehumidifier using ground water as a coolant was developed and tested dehumidification performance. The developed dehumidifier was applied to greenhouse with fog cooling system and effect of dehumidification on improvement of evaporative cooling efficiency was analyzed. Results of the dehumidifier performance test showed that dehumidification using ground water as a coolant was sufficiently possible in fog cooling greenhouse. When the set point temperature of greenhouse cooling was 32℃ and as temperatures of ground water rose from 15℃ to 18℃, 21℃ and 24℃, dehumidification rates decreased by 17.7%, 35.4% and 52.8%, respectively. As flow rates of ground water reduced to 75% and 50%, dehumidification rates decreased by 12.1% and 30.5%, respectively. Cooling efficiency of greenhouse equipped with fog system was distinctly improved by artificial dehumidification. When the ventilation rate was 0.7 air exchanges per minute, dehumidification rates of the fog cooling greenhouse caused by natural ventilation were 53.9%~74.4% and they rose up to 75.4%~95.9% by operating the dehumidifier. In case of using the ground water of 18℃ and flow rate of design condition, it was analyzed that whole fog spraying water can be dehumidified even if the ventilation rate is 0.36 exchanges per minute. As a utilization of dehumidifier, it is possible to improve cooling efficiency of fog system in naturally ventilated greenhouses.

인삼재배 해가림시설의 실태와 개선방안

남상운(Nam Sang-Woon) 한국생물환경조절학회 2003 한국생물환경조절학회 학술발표논문집 Vol.12 No.1