低温相变石蜡储热性能的实验研究  

EXPERIMENTAL STUDY ON THE THERMAL PERFORMANCE OF PARAFFIN

作　　者：闫全英[1] 王威[2] 

机构地区：[1]北京建筑工程学院城建系,北京100044 [2]信息产业部电子第六研究所,北京100083

出　　处：《太阳能学报》2006年第8期805-810,共6页Acta Energiae Solaris Sinica

基　　金：北京市供热;供燃气;通风及空调工程重点实验室资助项目(KF200310)

摘　　要：利用差示扫描量热仪对熔点在20-50℃的几种石蜡类相变材料及其它们的混合物的储热性能进行了实验研究。研究显示：石蜡的相变温度可根据组成进行调节，相变潜热大，无过冷现象，在多次吸放热后相变温度和相变潜热变化很小，稳定性好。该研究结果可为相变石蜡在建筑节能领域的应用提供依据。The thermal performances of several kinds of paraffin and their mixtures were studied experimentally by diffe ential scanning calorimeter（DSC）. The phase change temperatures of paraffin are from 20℃to 50℃. The results she that the phase change temperature of paraffin can vary with the constitution, and paraffin has larger phase change latent heat and no supercooling. The phase change temperature and phase change latent heat vary very small after absorbing heat and emitting heat for several times. The results can provide basis for the application of phase change material in the building field.

关 键 词：相变 石蜡 储热性能 稳定性 

分 类 号：TK512.4[动力工程及工程热物理—热能工程]