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根据化学溶解吸热原理，探索无机溶盐作为新型制冷剂的可行性．给出适用于空调蓄冷技术的几种相变蓄冷介质．对无机盐溶解热效应、溶质盐与溶剂盐的性质、配比组成等因素进行系统研究，分析了制冷后化学物质回收利用对环境污染的影响．实验结果表明，溶质盐应选用溶解度大、吸热值高的ＮＨ４ＮＯ３，ＫＮＯ３，ＮＨ４Ｃｌ，ＫＨＳＯ４等无机盐类；溶剂盐则应选用结晶水多、吸热值高的Ｎａ２ＳＯ４·１０Ｈ２Ｏ，Ｎａ３ＰＯ４·１２Ｈ２Ｏ，Ｎａ２ＨＰＯ４·１２Ｈ２Ｏ，Ｎａ２Ｂ４Ｏ７·１０Ｈ２Ｏ等．Ｂ组分与４号样品组成的制冷剂效果最佳，最低制冷温度可达－８．５℃．混配盐制冷剂依赖于溶质的性质，但一般难以回收利用．
Based on the principle of chemical dissolution and endothermic, explore the feasibility of inorganic salt as a new refrigerant. Some phase change storage media suitable for air conditioning technology are given. The effects of dissolved heat effect of inorganic salt, the properties of solute salt and solvent salt, the ratio of composition and other factors were systematically studied. The effects of recycling of chemical substances after cooling on the environmental pollution were analyzed. The experimental results show that inorganic salts such as NH4NO3, KNO3, NH4Cl and KHSO4 with high solubility and high endothermic value should be used as solute salts. For the solvent salts, Na2SO4 · 10H2O, Na3PO4 · 12H2O, Na2HPO4 · 12H2O, Na2B4O7 · 10H2O and the like. B component and sample No. 4, the best refrigerant composition, the minimum refrigeration temperature up to -8.5 ℃. Mixed salt refrigerants depend on the nature of the solute, but are generally difficult to recycle.