煤油蒸干温度与压力的关系  

The effect of pressure on the temperature at which kerosene dries

作　　者：李中洲[1] 朱惠人[1] 

机构地区：[1]西北工业大学动力与能源学院,西安710072

出　　处：《机械设计与制造》2011年第4期209-211,共3页Machinery Design & Manufacture

基　　金：国家973计划(2007CB707701)

摘　　要：分别在100KPa、200KPa、300KPa、400KPa、500KPa和800KPa六个不同压力下通过实验研究了煤油(航空煤油RP-3)在微小圆管内传热的情况。实验管长为360mm,外径为2mm,内径为1mm,实验结果表明:在一定的压力下,传热系数先随煤油温度升高而增大,当温度达到沸点后,传热系数显著增大,然后突然减小,最后再慢慢增大。并且传热系数显著升高时的温度值随压力的增加而升高。传热系数突然降低时的温度值(蒸干温度)随压力增加而升高。The heat transfer of the kerosene in micro tube was studied under the pressures of 100KPa、200KPa、300KPa、400KPa、500KPa and 800KPa respectively through experiment.The tube is 360mms long,its outer diameter is 2mm,and its inner diameter is 1mm.The result shows that under a certain pressure,the heat transfer of the kerosene（RP-3）increases with the rising of the temperature at first,the heat transfer of the kerosene rises remarkably when the temperature attains boiling point,then the heat transfer of the kerosene（RP-3）suddenly decreases with the rising of the temperature of the kerosene.In the end,the heat transfer of the kerosene increases with the temperature rising of the kerosene.The boiling point rises when the pressure increases,the temperature at which kerosene dries rises when the pressure increases.

关 键 词：传热系数 压力增大 温度升高 沸点 蒸干温度 

分 类 号：TH16[机械工程—机械制造及自动化] TK124[动力工程及工程热物理—工程热物理]