온수보일러를 이용한 상변화물질의 축열시스템 이용효과

백이; 강석원; 장재경; 권진경; 강연구

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자료유형: 학술저널

저자정보: 백이 강석원 장재경 권진경 강연구

저널정보: 한국기계기술학회 한국기계기술학회지 한국기계기술학회지 제20권 제2호

발행연도: 2018.1

수록면: 200 - 206 (7page)

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연구주제

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연구배경

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연구방법

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연구결과

초록· 키워드

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In order to effectively utilize thermal energy, we analyzed the performance of the high efficiency latent heat storage system which can be used for greenhouse heating by using the developed phase change material. The system consists of hot water boiler, heat storage material, heat storage box, heat storage tank, circulation pump, control panel, and storage material. As a result, the latent heat and latent heat temperature of sodium acetate hydrate as latent heat storage material are 231.6 ~ 264.8kJ/kg, 54.95 ~ 55.48℃. As the number of cooling and heating increased, the latent heat temperature showed a slight change, but the latent heat decreased 33.1kJ/kg as the number of repetition increased. In the case of sodium acetate hydrate, large supercooling phenomenon was observed, and it was found that mixing of additives such as nucleating agent, thickener and supercooling agent can control the supercooling more effectively. The consumption of kerosene decreased until the temperature of the heat storage tank was raised to the set temperature by the closed circuit for 4 hours in the initial stage of the boiler operation. The heat exchange rate according to the change of the flow rate was maintained at the set temperature inside the heat storage tank after 4 hours of operation, Consumption was high. As the flow rate increased, the inlet and outlet temperature difference decreased, the heat exchange rate increased, and the heat exchange efficiency was in the range of 57.4 ~ 60.5%.

참고문헌 (8)

참고문헌 신청

Ministry of Agriculture, Food and Rural Affairs (MAFRA) / 2015 / Greenhouse Status for the vegetable grown in Facilities and the vegetable production in 2014 / Hanra planning :112~113

Rural Development Administration(RDA) / 2008 / Protected Horticulture Energy Saving Guide Book for Overcoming High Oil Price / Sangrok press :11

백이 / 2015 / 온수패드를 이용한 호접란 재배용 베드 국부난방 효과 / 한국기계기술학회지 17(5):1037~1043

변재기 / 2017 / 상변화 물질을 적용한 급속 축냉기술에 관한 수치해석 연구 / 한국기계기술학회지 19(6):785~791

Nishizaki, N. / 1980 / Japanese Patent Kokkai :55~142

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