摘要
采用焓法 ,分析了蓄能相变材料相变区比热特性对其蓄换热性能的影响。该方法对潜热型蓄换热系统的热性能分析和计算是普适的。针对该方法较为复杂而理想相变材料 (相变温度为一点 )热特性的分析较为简单并有大量结果可供参考的特点 ,讨论了采用对理想相变材料适用的蓄换热性能分析方法和公式来计算相变温度为一个温度区间的非理想相变材料蓄换热特性的适用条件。所得结论拓宽了理想相变材料蓄换热性能分析方法及分析结果的适用范围。在很多情况下 ,大大简化了非理想相变材料蓄换热性能的分析和计算 。
By enthalpy method, the effect of characteristics of the specific heat of phase change material in its phase change process was analyzed. The method is applicable for analyzing the thermal performance of latent heat storage system. The condition of using the simplified formulae and the results for analyzing the thermal performance of non-ideal phase change material was discussed. The research results show that for practical phase change process these formulae can be used also for ideal phase change process under some conditions. The research is helpful to the design and performance optimization of various latent heat storage systems.
出处
《太阳能学报》
EI
CAS
CSCD
北大核心
2002年第1期27-31,共5页
Acta Energiae Solaris Sinica
基金
国家自然科学基金资助项目 (5 97760 3 0 )
