超急速温升条件下水-丙酮沸腾研究  

Boiling of Water-Acetone Mixture under Rapid Temperature Rise

作　　者：金仁喜[1] 刘登瀛[2] 华顺芳[1] 张正芳[2] 

机构地区：[1]海军工程大学动力学院工程热物理教研室,湖北武汉430033 [2]中国科学院工程热物理研究所,北京100080

出　　处：《化学工程》2002年第6期30-32,49,共4页Chemical Engineering(China)

基　　金：国家重点基础研究发展规划项目 (G2 0 0 0 0 2 630 5 );中国科学院"九五"基础研究重大资助项目 (KJ95 1 B1 70 4)

摘　　要：利用短脉冲激光加热浸没在水 丙酮非共沸工质中的铂薄膜电阻的方法 ,对不同体积配比的工质在超急速温升条件下的沸腾进行研究。研究表明 :往丙酮里加少量水后 ,可以使沸腾汽泡直径变小 ;纯水温度达到42 0K时仍未见到沸腾现象 ,往水里添加少量丙酮液体后混合液体工质里出现细小汽泡 ;往水 (丙酮 )中添加体积配比小于 0 .1的丙酮 (水 )时 ,最高热流密度都增大 ;要使铂薄膜最高温度尽量低 。The platinum film resistor that is immerged in water-acetone mixture is heated by short pulsed-laser to investigate the mixture′s boiling behavior under rapid temperature rise condition. It shows that the vapor bubble in the mixture whose acetone volume fraction is smaller than that is in the distilled pure water. The tiny vapor bubbles appears when the water volume fraction is small in the mixture. Boiling does not happen in the distilled pure water even if it is heated to 420K. The max flux that is absorbed by mixture increases when the water or acetone′s volume fraction is less than 0.1. It exists an appropriate volume fraction to get low temperature of platinum film resistor.

关 键 词：超急速温升条件 水-丙酮 沸腾 研究 短脉冲激光 非共沸混合工质 

分 类 号：TQ02[化学工程]