空调蓄冷材料及蓄冷球内非固定融化问题的研究  

STUDY ON THERMAL PERFORMANCE OF PCM FOR AIR-CONDITIONING AND INFECTION OF AMBULATORY MELTING PROBLEM IN SPHERE

作　　者：李晓燕[1] 马最良 

机构地区：[1]哈尔滨工业大学市政环境工程学院,哈尔滨150090

出　　处：《太阳能学报》2007年第8期892-896,共5页Acta Energiae Solaris Sinica

基　　金：国家自然科学基金(青年基金)项目(50606007);黑龙江省高等学校骨干教师创新能力项目(1054G018)

摘　　要：通过实验方法研究了空调蓄冷材料的相变温度、相变潜热和比热等热学性能。并对该种蓄冷材料制成的蓄冷球进行了释冷特性的研究,探讨了蓄冷球内固液密度差引起的固态物上浮对蓄冷球融化释冷的影响,得到了融化率随时间的变化关系。结果表明:该蓄冷材料融解热为149.4kJ/kg,相变温度为7.9℃,该相变材料可作为空调蓄冷材料,蓄冷球的直径及固液密度差对融化释冷特性有较大影响。The thermal performance of a new phase change material （PCM） including melting point and melting latent heat during the phase change process was investigated. Moreover, the effective heat capacity method was used to simulate the heat transfer processes of cool storage spheres, the changing relation curves of melting ratio, temperature and the diameter of cool storage sphere along with time were obtained. The results show that melting latent heat of the cool storage material is 149kJ/kg, phase change temperature is 7.9℃, the material can be considered as an efficient cool storage material for air-conditioning, both the difference between solid ＆ liquid densities and diameter of cool storage sphere have a relatively great influence on the thermal performance of discharging processes of cool storage systems.

关 键 词：蓄冷材料 实验研究 释冷特性 固液密度差 蓄冷空调 

分 类 号：TK124[动力工程及工程热物理—工程热物理]