中文摘要：

分别对充液率45％、55％、62％、70％下水、乙醇两组分按体积比13∶1、2∶1、1∶1、1∶2、1∶13混合而成的二元混合工质振荡热管的传热特性进行了实验研究,并与水和乙醇纯工质在相同充液率下的传热特性进行对比,结果表明,小充液率时,水-乙醇混合工质振荡热管烧干时热阻较纯工质小,大充液率时,水纯工质传热特性优于水-乙醇混合工质及乙醇纯工质.分析实验结果得出,水-乙醇二元混合工质振荡热管传热特性与充液率及混合工质配比有关,配比对传热特性的影响主要表现为气液平衡、物性及缔合作用.

英文摘要：

Heat transfer characteristics of Pulsating Heat Pipe （PHP） with fill ratio of 45% , 55% , 62% , 70% were researched experi- mentally for aqueous ethanol with volume ratio of 13： 1,2： 1, 1 ： 1 , 1 ： 2, 1 ： 13 as working fluids. Experimental results indicated that, with lower fill ratio, the thermal resistance of aqueous ethanol PHP was better than that of water or ethanol PHP; and with higher fill ratio, the characteristics of heat transfer using water as pure working fluid were better than that of using ethanol pure working fluid or aqueous etha- nol fluids. It was found out from experimental results that, the heat transfer characteristics of PHP depended on the fill ratio of working fluids and the volume ratio of the two components which is closely related to vapor - liquid balance, physical properties and the association of molecules.