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학술연구/단체지원/교육 등 연구자 활동을 지속하도록 DBpia가 지원하고 있어요.
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연구자들이 자신의 연구와 전문성을 널리 알리고, 새로운 협력의 기회를 만들 수 있는 네트워킹 공간이에요.
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Fossil energy is needed for a whole year greenhouse cropping due to climate in South Korea. Because the most of the fossil energy resources is imported, it is necessary to develop technology to be able to reduce the energy cost in order to manage greenhouse profitably. The greenhouse commonly consume less amount of energy as compared to other industrial sectors. Replacement of fossil fuel with solar thermal storage, therefore, can be an economical as well as environmentally sustainable option for greenhouse heating. The fluid flow, heat storage and radiation characteristic of the gravel bed model were analyzed to provide basic data for design of the experimental solar heated greenhouse with underground thermal storage using gravel. The air flow velocity in the gravel storage bed was proven to be affected from the capacity of circulation fan and the circulation method and the positive pressure method was proven to be the best among the different air circulation methods. The initial air temperature of the thermal storage bed of 1.2 m wide×9 m long×0.9 m deep was 10 ℃. After the thermal storage bed is heated by air of the mean temperature 41 ℃ during 9 hours, the temperaturehas increased about 20.3 ℃ and the storage of heat was about 33,000 kcal. The important factors should be taken into consideration for design of the solar heated greenhouse with underground thermal storage using gravel are insulation of rock storage, amount of storing heat, inflow rate and direction of inlet and outlet duct.
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참고문헌 (21)
참고문헌 신청
Ahmet KurkLu / 2003 / A study on the solar energy storing rock-bed to heat a polyethylene tunnel type greenhouse / Renewable Energy 28 : 683 ~ 697
Akridge. J. M. / 1977 / Rock collector and storage system for greenhouse and resident heating / Proceedings of A conference on solar energy for heating greenhouses and greenhouse-r
Boulard, T. / 1990 / Performance of a greenhouse heating system with a phase change material / Agricultural and Forest Meteorology 52 : 303 ~ 318
Bredenbeck, H / 1984 / Rock bed storage inside of greenhouses / Acta Horticulturae 148 : 739 ~ 744
Coutier, J.P. / 1982 / Two applications of a numerical approach of heat transfer process within rock beds / Solar Energy 29 (6) : 451 ~ 462
Akridge. J. M. / 1977 / Rock collector and storage system for greenhouse and resident heating / Proceedings of A conference on solar energy for heating greenhouses and greenhouse-r
Boulard, T. / 1990 / Performance of a greenhouse heating system with a phase change material / Agricultural and Forest Meteorology 52 : 303 ~ 318
Bredenbeck, H / 1984 / Rock bed storage inside of greenhouses / Acta Horticulturae 148 : 739 ~ 744
Coutier, J.P. / 1982 / Two applications of a numerical approach of heat transfer process within rock beds / Solar Energy 29 (6) : 451 ~ 462
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