보고서 정보
주관연구기관 |
한밭대학교 Hanbat University |
보고서유형 | 최종보고서 |
발행국가 | 대한민국 |
언어 |
한국어
|
발행년월 | 2016-01 |
과제시작연도 |
2015 |
주관부처 |
농촌진흥청 Rural Development Administration(RDA) |
등록번호 |
TRKO201600003318 |
과제고유번호 |
1395039814 |
사업명 |
농업기후변화적응체계구축 |
DB 구축일자 |
2016-06-25
|
DOI |
https://doi.org/10.23000/TRKO201600003318 |
초록
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Ⅳ. 연구개발결과
겨울철 온실 내 기존 면세 등유 보일러 대비 미활용에너지인 발전소 온배수 및 소각여열을 열원으로 이용하여 온실 난방용 고효율 시설원예용 FCU 시스템 적용하였다. 배관을 고려한 열원 중 발전소 온배수 Heat Pump 시스템의 기술효과는 운용비 면에서 면세 등유 보일러 대비 난방에너지 및 난방비의 80%의 절감 효과를 보였으며, 배관재질에 의한 초기투자비용 회수기간은 상대적으로 저렴한 HDPE관이 이중 단열관에 비해 거리 16km 기준 약 40%의 비용회수기간이 절감되는 것으로 확인되었다. 소각시설 여열의 경
Ⅳ. 연구개발결과
겨울철 온실 내 기존 면세 등유 보일러 대비 미활용에너지인 발전소 온배수 및 소각여열을 열원으로 이용하여 온실 난방용 고효율 시설원예용 FCU 시스템 적용하였다. 배관을 고려한 열원 중 발전소 온배수 Heat Pump 시스템의 기술효과는 운용비 면에서 면세 등유 보일러 대비 난방에너지 및 난방비의 80%의 절감 효과를 보였으며, 배관재질에 의한 초기투자비용 회수기간은 상대적으로 저렴한 HDPE관이 이중 단열관에 비해 거리 16km 기준 약 40%의 비용회수기간이 절감되는 것으로 확인되었다. 소각시설 여열의 경우 운용비면에서 면세등유보일러 대비 난방비 약 5~80%의 절감 효과를 보였으며, 이중단열관이 에너지 효율측면에서 더욱 좋은 성능을 나타내지만, 배관 매설 등 시공비를 고려할 경우 시공단가의 차이로 인해 HDPE관을 사용하는 것이 바람직할 것으로 판단된다.
Abstract
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1. Energy pattern of each heat source according to distance
In the case of the energy pattern depending on each heat source, for the thermal effluent from a power plant, the pattern can be examined based on COP which is expressed in performance curve of a heat pump, and the result value can be ex
1. Energy pattern of each heat source according to distance
In the case of the energy pattern depending on each heat source, for the thermal effluent from a power plant, the pattern can be examined based on COP which is expressed in performance curve of a heat pump, and the result value can be examined as electricity consumption. On the other hand, for the residual heat from an incineration facility, the energy pattern can be examined based on the sum of heat loss in each distance for the required load of the horticulture facility, and thus heat loss depending on the distance is an important factor. For the thermal effluent from a power plant, the difference in COP depending on the distance was insignificant.
2. Outlet temperature of each heat source according to distance
In the case of the power plant, the outlet temperature is affected by the flow rate of pipe, and the flow rate of pipe which is directly affected by the capacity of heat pump is constant regardless of the setting temperature of growing crop, so there is no difference in the outlet temperature between the greenhouse crop growing under low, middle and high temperature. The outlet temperature was approximately 19.4~19.9℃ in case of HDPE pipe and 19.9~20.0℃ in case of pre-insulated pipe according to distance. On the other hand, in the case of the incineration facility, the temperature difference in 1 km distance which was the closest distance and 16 km which was the farthest distance among the distance variables set in this study was approximately 23.6℃ for low temperature, 22.4℃ for middle temperature and 21.5 0℃ for high temperature in case of HDPE pipe. In case of pre-insulated pipe, the temperature difference from 1 km to 16 km was approximately 11.5℃ for low temperature, 10.00℃ for middle temperature and 9.2℃ for high temperature, so the pre-insulated pipe which had relatively better insulation performance showed lesser outlet temperature than the HDPE pipe as the distance increased.
3. Payback period of each heat source according to distance
In the case of the power plant, the payback periods of the HDPE pipe for the low-, medium-, and high-temperature cultivated crops were about 12.59, 9.19, and 8.36 years, respectively, based on 1km distance; and about 25.99, 18.97, and 15.73 years, respectively, based on 16km distance. Also, the payback periods of the double insulated pipe were about 13.81, 10.08, and 8.36 years, respectively, based on 1km distance; and about 45.55, 33.26, and 27.58 years, respectively, based on 16km distance. Thus, the payback period was short for the high-temperature crop regardless of the pipe material. In the case of the incineration facility, the payback periods of the HDPE pipe for the low-, medium-, and high-temperature cultivated crops were about 0.42, 0.31, and 0.26 years, respectively, based on 1km distance;and about 20.80, 10.02, and 7.16 years, respectively, based on 16km distance. Also, the payback periods of the double insulated pipe were about 1.14, 0.84, and 0.70 years, respectively, based on 1km distance; and about 20.36, 14.73, and 12.12 years, respectively, based on 16km distance. For both of the two heat sources, the payback period was short in the case of the high-temperature cultivated crop.
4. Development of design method for energy supply system using multi energy source
This study was accomplished to develop the design method of energy supply system using multi energy source in large-scale horticulture facility. In order to examine the application potential of each energy source, the regional energy reserves and manufacturers were investigated in Korea. After, the performance prediction model was composed by using dynamic energy simulation. With this simulation model, the quantitative energy analysis and economic feasibility was conducted. Furthermore, the optimum combination of energy system was determined considering system capacity and operation method by case studies. Finally, total energy system was designed including the secondary heat source system. This paper indicated the case of the geothermal heat pump system combined with the pellet boiler. As a result, it was found that the multi-energy system could reduce the initial investment cost of about 45% comparing with the conventional geothermal system. In addition, the combination system could save the annual heating energy costs of about 55% comparing with the case of operating the only pellet boiler. Therefore, the payback period was determined to be 14 years when using multi-energy system which mainly uses the ground heat pump system and operates auxiliary pellet boiler.
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