聚乙二醇可作为一种固—液相变储能物质。通过对三种不同聚合度的聚乙二醇贮热性能的研究,得出:不同聚合度的聚乙二醇,其贮热能力随聚合度的增加而增强,其固—液相变温度、相变焓也随聚合度的增加而依次增大,显示的性质具有较好的热贮性能。 Polyethylene glycol can be used as a solid - liquid phase change energy storage material. Through the study of heat storage performance of three kinds of polyethylene glycol with different polymerization degree, it can be concluded that the heat storage capacity of polyethylene glycol with different polymerization degree increases with the increase of polymerization degree, and the solid-liquid phase transition temperature, The enthalpy of phase transition also increases with the increase of polymerization degree, showing the properties of good thermal storage properties.