The phase change of ordinary pressure-transfer sealing medium made by pyrophylite occurs under high temperature and high pressure, which influences the medium's functions.

普通单一叶蜡石材料传压密封介质在高温高压下容易发生相变，影响介质的使用性能。

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Meanwhile, selecting porous medium expanded perlite which makes phase change materials and structure into integration-as a carrier of paraffin.

同时，选取可使相变储能材料与结构功能一体化的多孔介质——膨胀珍珠岩作为石蜡的储能载体。

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An experimental research has been taken on heat efficiency, startup behavior, isothermal characteristics of a vacuum phase change heating system using a new kind of compound working medium.

利用新型复合工质对真空相变供热系统进行了热效率、启动特性、等温特性的实验研究。

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