冷媒の自然循環, 沸騰・凝縮の直接接触伝熱を利用するガス水和物冷熱蓄熱の研究

概要

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The method of cool energy storage using heat transfers of direct contact boiling and condensation between refrigerant as a working medium and water as a PCM in an enclosure was proposed in the previous report. It was also shown that the efficient storage and release of cool energy were achieved for small height of water up to 50mm. In this report, the effect of height of storage material, the rate of heat storage and release and the heat transfer characteristics using same method were investigated under large height of storage material up to 517mm. HCFC142b and water or 2% n-butanol-water solution were used as a working medium and a storage material, respectively. Heat of chemical reaction of gas hydrates of HCFC142b and water was utilized. As a result, an efficient cool energy storage and release was achieved for large height of storage material. In particular, high rate of heat storage was maintained for all heights of the storage material for n-butanol solution.
社団法人日本機械学会の論文
1991-11-25