管翅式相变蓄热器性能的实验研究  

Experimental study on performance of tube-fin phase change storage

作　　者：李永辉[1] 马素霞[1] 谢豪[1] 

机构地区：[1]太原理工大学电气与动力工程学院,山西太原030024

出　　处：《可再生能源》2014年第5期574-578,共5页Renewable Energy Resources

摘　　要：为了改善光管螺旋式相变蓄热器的蓄放热效果,在圆管上加装了矩形翅片,并通过选择复合体系的相变蓄热材料,实验研究了翅片螺旋式相变蓄热器的蓄热特性。实验结果表明:以80%Na2SO4·10H2O+20%Na2HPO4·12H2O的复合体系为蓄热介质,矩形翅片螺旋相变蓄热器的蓄热速度比光管式蓄热器提高了1/3,蓄热时间缩短了1/3,具有良好的蓄放热性能。In order to improve the heat storage effect of spiral bare tube phase change thermalstorage, rectangular fins were fixed on bare tube, and optimized composite phase change heat stor-age material is selected. The properties of fin spiral phase change thermal storage were researched.The results show that the heat storage speed of rectangular spiral tube-fin phase change thermalstorage with compound heat storage medium of 80% Na2SO4·10H20＋20%Na2HPO4·12H20 increas-es one third than that of bare tube thermal storage, heat storage time reduces one third, which hasgood performance of heat storage and release.

关 键 词：相变蓄热 矩形翅片 复合体系蓄热材料 蓄热性能 

分 类 号：TK02[动力工程及工程热物理]