【摘要】 提出了一种以癸酸作为相变材料的热风式相变储能模块。以该模块的一个单元为实验对象，测量了模块内部相变材料在蓄、放热过程中的温度变化，比较了水平放置和竖直放置的模块单元在相同实验条件下的相变过程，得到了该储能模块的蓄放热特性。结果表明，相同实验条件下，模块水平放置时癸酸熔化率比竖直放置时高。这为该相变储能模块在应用中的安装布置提供了参考。此外，将直热风管道改为S型管道后，增大了换热面积，强化了管外侧液相区的自然对流，提高了蓄热过程癸酸液相率，储能效果更佳。更多还原

【Abstract】 A module integrated with the phase change material-decanoic acid and copper tube heating by hot air was proposed. Using its one cell as experimental subject, the temperature variation of the phase change material was evaluated using thermocouples. The heat transfer characteristics of the module was acquired by comparing the phase changing process of the horizontally arranged cell with that of the vertically arranged one. The results show that the decanoic acid’s melting rate of the module placed horizontally is higher than the one placed vertically in the same experimental conditions, which provides a reference for the installation of it in practical applications. An improved module, containing S-shaped cooper tube which enhances the natural convection in the outside wall, has better energy storage efficiency.更多还原