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논문 기본 정보

자료유형
학술저널
저자정보
저널정보
한국태양에너지학회 한국태양에너지학회 논문집 한국태양에너지학회 논문집 제24권 제1호
발행연도
2004.3
수록면
7 - 12 (6page)

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Mixtures type PCM, H₂O-NaOH that has relatively large capacity of the latent heat and long duration of phase change temperature was developed and experimentally analyzed for the low temperature storage of the food and medical products. The results could be summarized as follows;
1. Borax as nucleating agent and acrylic polymer as thickening agent were added to H₂O to prevent the supercooling and phase separation.
2. Phase change (solid?liquid) duration of H₂O added with NaOH was prolonged longer 50% than that of pure H₂O.
3. Phase change temperature of the latent heat material, H₂O-NaOH was 1.5∼2℃, the maximum latent heat was 279 kJ/kg at the NaOH addition of 1.3 wt. %.
4. The specific heat of H₂O-NaOH at the solid and liquid state was increased in proportion to the wt. % of NaOH, when NaOH of 1.15∼1.60 wt. % was added to H₂O, the specific heat of the solid state was increased from 3.19 kJ/kg to 5.84 kJ/kg and that of liquid state from 7.8 kJ/kg to 10.28 kJ/kg.
5. When NaOH of 1.15~1.60 wt.% was added to H₂O, the total heat storage capacity composed of sensible and latent heat was 313~331.3 kJ/kg and the maximum heat storage capacity was occurred at NaOH addition of 1.30 wt. %.

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Abstract

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2. 재료 및 실험방법

3. 결과 및 고찰

4. 결론

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