空调蓄冷材料热性能实验研究

Investigation on Thermal Properties of a Cool Storage Material for Air Conditioning

通过实验研究了空调蓄冷材料的凝固温度、融解温度、凝固潜热和融解潜热等热学性能。该蓄冷材料是由两种相变材料构成。在热性能测试中 ,用示差扫描量热仪来测定蓄冷材料的潜热 ,用红外光谱仪来测定蓄冷材料的结构变化。该蓄冷材料的融解热是 1 1 8.996kJ/kg、起始融解温度是 6 .399℃。其热容量比一般的无机水合盐大、融解温度比冰高。

The thermal properties of cool storage material include freezing and melting point, freezing and melting latent heat during the phase change process were investigated. The material was composed of two kinds of phase change materials. In the thermal testing, the Differential Scanning Calorimeter (DSC) was used to determine the latent heat of the material, and the infrared spectra instrument was used to determine the structure change of the material. The melting latent heat is 118.996 kJ/kg, and melting onset point is 6.399℃. The heat capacity of the material investigated is larger than that of salt hydrates, and melting point is higher than that of ice. The results show that the material can be considered as an efficient cool storage material for air conditioning system.