有机相变储能材料研究进展

Progress in studies of organic phase change materials for thermal energy storage

太阳热能及环境中热能是一种绿色能源,由于受自然条件及外部环境的影响,其大规模开发利用有很大的技术困难。而有机相变储能材料将外界或体系中的热量以高储能密度的潜热储存方式加以储存,既能够将低品位的热能转换成为具有高品位的能源,又具有相变温度可调节和无过冷、相分离等优点,是一类新型的清洁储能材料。有机相变储能材料主要包括固-液相变,固-固相变,复合相变3类,研究该材料对能源的开发和合理利用具有重要意义。综述了近年来相变储能材料研究和应用的新进展,介绍了相变材料的种类及各类相变材料的特点,并对各类相变材料的性能、储能机理和优缺点进行讨论;并探讨有机相变储能材料在建筑节能、纺织业领域的应用。

Solar and environmental thermal energy is one kind of green energy.But the amount of the thermal energy is great difficult for the technology of the large-scale exploitation in the results of affecting by the weather and climate change.As a new type of clean energy storage materials,the organic phase change materials （OPCMs） can store heat from the outside or interior of the system by means of latent heat storage,which converts the low-grade heat into high-grade energy heat.The OPCMs have some important characteristics of adjustable phase transition temperature,no over-cooling and no phase separation.Therefore,OPCMs are of great significance for the development and rational utilization of energy.OPCMs include solid-liquid,solid-solid and composite phase change materials.New progress on research and application of phase change energy storage materials in recent years are summarized in this paper.The species and characteristics of phase change materials are introduced,and the performance,energy storage mechanism,merits and faults of all kinds of phase change materials are discussed.The application of the phase change materials in the fields of textile industry and building energy saving is stated and the development trend.