甲醇、丙酮及其二元混合工质脉动热管的启动特性

发布时间：2018-05-13 03:08

  本文选题：脉动热管 + 充液率　； 参考：《化工进展》2016年09期

【摘要】：以甲醇、丙酮以及二者体积比1∶1混合组成的甲醇/丙酮混合液为工质,对脉动热管在不同加热功率和充液率下的启动特性进行了实验研究,结果表明:在低加热功率下时,甲醇/丙酮混合工质的启动时间比丙酮长,比甲醇短,适当增加启动功率可以明显缩短脉动热管的启动时间,但是对丙酮及混合工质的启动温升影响不大;在60W高加热功率下时,3种工质的启动方式均为温度突变型,其中混合工质的启动时间最短,并且增加启动功率可以明显地提高混合工质脉动热管的启动温升;充液率对脉动热管的启动方式影响较为明显,丙酮和混合工质的启动温升均随着充液率的增加而逐渐减少,在中低充液率(≤50%)下,二者属于温度突变型启动,而在80%高充液率下,其启动方式变为温度平稳过渡型启动。
[Abstract]:Using methanol, acetone and methanol / acetone mixture with the volume ratio of 1:1 as working medium, the starting characteristics of pulsating heat pipe under different heating power and liquid filling rate were studied experimentally. The results show that: at low heating power, the starting characteristics of pulsating heat pipe are studied. The start-up time of methanol / acetone mixture is longer than that of acetone and shorter than that of methanol. The start-up time of pulsating heat pipe can be shortened obviously by increasing the starting power properly, but the starting temperature rise of acetone and mixed working fluid is not affected. At 60W high heating power, all the three kinds of working fluids are temperature abrupt, and the starting time of mixed working fluid is the shortest, and increasing the starting power can obviously increase the starting temperature rise of the mixed working fluid pulsating heat pipe. The effect of liquid filling rate on the starting mode of pulsating heat pipe is obvious. The starting temperature rise of acetone and mixed working fluid decreases with the increase of liquid filling rate. Under the condition of medium and low liquid filling rate (鈮，

本文编号：1881375