초록 ▼

Ⅳ. 연구개발결과
지역자원의 가용량 및 에너지량을 산정하였고, 양돈 사육 두수에 따른 바이오가스 생산량 및 발전가능량을 분석하여, 지역자원의 가용 에너지량 산정 모델을 개발하였음. 원예시설의 에너지자립도 향상 및 에너지시스템 최적설계를 위한 기준이 될 수 있는 설계요인별 고려사항 및 적용 기준들을 제시하였고, 이를 바탕으로 자원순환형 원예시설 에너지시스템을 설계할 수 있는 프로그램을 개발하여 보다 효율적이고, 경영목적에 적합한, 그리고 지역특성에 맞는 최적설계가 가능하도록 하였음. 자원순환형 원예시설 에네지시스템의 현장실증 모

Ⅳ. 연구개발결과
지역자원의 가용량 및 에너지량을 산정하였고, 양돈 사육 두수에 따른 바이오가스 생산량 및 발전가능량을 분석하여, 지역자원의 가용 에너지량 산정 모델을 개발하였음. 원예시설의 에너지자립도 향상 및 에너지시스템 최적설계를 위한 기준이 될 수 있는 설계요인별 고려사항 및 적용 기준들을 제시하였고, 이를 바탕으로 자원순환형 원예시설 에너지시스템을 설계할 수 있는 프로그램을 개발하여 보다 효율적이고, 경영목적에 적합한, 그리고 지역특성에 맞는 최적설계가 가능하도록 하였음. 자원순환형 원예시설 에네지시스템의 현장실증 모델을 설계하였고, 현장실증 실험을 통하여 온실의 환경, 에너지소비량, 작물생육 등을 조사·분석하였고, 에너지 시스템의 경제성분석을 하였음. 건물에너지 시뮬레이션(BES)을 이용한 대상 시설의 냉·난방 에너지 부하를 산정하였고, 신재생에너지 분석 프로그램(RETScreen)을 이용한 경제성 분석 및 효율성을 분석하였음. 또한 전산유체역학(CFD) 시뮬레이션을 통한 온실 내부 환경을 평가하였으며, BES와 CFD 등의 상호 연결을 통한 에너지시스템의 분석기술을 정립하였음

Abstract ▼

An energy crisis has become an issue all over the world according to the high oil prices and the climate change. It has also become a problem in facility horticulture industry, because it consumes lots of energy to control environment of facility by heating system. The energy self-sufficient facilit

An energy crisis has become an issue all over the world according to the high oil prices and the climate change. It has also become a problem in facility horticulture industry, because it consumes lots of energy to control environment of facility by heating system. The energy self-sufficient facilities which can help reduce the heating cost are required for stable management of farm household, and the development of resource circulation energy system is required for alternative energy system.
1. This results was showed with a new standard 2,000 heads of pigs. Livestock manure was originated 8.6kg/day/one head, and the average biogas yield was 1.23Nm3/day occurred. The biogas reactor and engine showed that scale of 300m³ was 25Kw respectively. Agricultural and Forest Residual-products Biomass quantity in heating road of 200,000kcal/h were 1,224kg, 912kg respectively.
2. In the design of recycling-resources type greenhouse, industrial factors such as connection with bio-energy, utilization of waste heat and industrial by-product and energy resource factors must be considered in addition to general factors for greenhouse design. Also in the design of recycling-resources type greenhouse, greenhouse structure, energy system, cultivation system to be able to use the regional resources in effect must be included. Thus design factors for the energy system were selected, and weighting values for each factor were given. Also the standard weather data for energy system design were developed. As using the data, the computer program for greenhouse energy simulation was developed to be able to design easily the recycling-resources type greenhouse energy system.
3. Keeping warmth property of various greenhouse covering materials and heat insulation materials was investigated by experiment. Thus the results were reflected to energy simulation program and the optimal design of recycling-resources type greenhouse energy system will be able to be guided by users.
4. Demonstration farm was selected with tomato farm in Kimhae. The resource circulated energy system was composed with solid fuel heaters, PO film, heat storage water bag, and so on. The control was constituted with PE film, warm air heating diesel fuel, etc. The air temperature of treatments was higher than the control, The temperature of the earth was similar to each other. The radiation was less than the control. The plant height under treatment was increased rather than control, but stem diameter was decreased. More than 12 degrees of setting temperature has the profitability under treatment in Suwon. Also the cold regions and the condition of higher setting temperature were economically.
5. The cooling and heating loads of greenhouse were calculated and geothermal energy system was incorporated into greenhouse by TRNSYS modeling which is one of the Building Energy Simulation (BES). The greenhouse BES model was validated comparing with field experiment, and it has 5.3% error. According to domestic regions of Korea, heating and cooling loads of greenhouse differed about 98.1% and 20.2% respectively. The geothermal energy system(GES) with 240RT scale which is installed at 10ha greenhouse could save annually 218 million won of heating costs.
6. A biomass fired cogeneration plant was designed and simulated using BES technic to estimate effectiveness of its system on livestock industry. The results showed, when a livestock farm breeding 4,000 pigs install the biomass fired cogeneration plant, it could produce annually 284.27GJ heating energy and 148.72MW electric energy and reduce annually 85.9tCO2 emission.
7. A photo-bioreactor (PBR) was conducted using the computational fluid dynamics (CFD). A BPMG model (biomass production prediction grafting mixing and growth model) combining hydrological particle movement analyzed by statistic using CFD and microalgal growth model related to light intensity was also developed to compare quantitatively productivity of microalgal between each PBR designs.
8. An application of CFD in the external atmospheric processes was investigated. In Korea, the development of simulation model considering complexly geological factors is important, because livestock farms are mostly located in the mountainous territory. In addition, previous studies about diffusion modeling of contaminant were investigated for settlement comfort.
9. New method to estimate ventilation rate was developed. As a result, the limitations of conventional method such as tracer gas method were improved aspect of saving computational time and resources.

목차 Contents

• 표 지 ... 1
• 제 출 문 ... 2
• 요 약 문 ... 3
• S U M M A R Y ... 4
• 목 차 ... 6
• 제 1 장 서 론 ... 7
• 제 2 장 국내외 기술개발 현황 ... 8
• 제 3 장 연구개발 수행 내용 및 결과 ... 10
• 제1절 : 지역자원의 가용 에너지량 산정 모델 개발 ... 10
• 제2절 : 자원순환형 원예시설 에너지시스템 설계 ... 20
• 제3절 : 자원순환형 원예시설 에너지시스템 현장실증 ... 41
• 제4절 : 동적시뮬레이션을 통한 원예시설 에너지시스템의 성능 평가 ... 52
• 제 4 장 연구개발 목표 달성도 및 대외 기여도 ... 116
• 제1절 : 목표대비 달성도 ... 116
• 제2절 : 정량적 성과(논문게재, 특허출원, 기타) ... 118
• 제 5 장 연구개발결과의 활용계획 ... 122
• 제 6 장 연구개발과정에서 수집한 해외과학기술정보 ... 123
• 제 7 장 기타 중요 변동사항 ... 125
• 제 8 장 국가과학기술종합정보시스템에 등록한 연구장비 현황 ... 126
• 제 9 장 참고문헌 ... 127
• 끝페이지 ... 131