真空相变换热器的试验研究

An experimental study of vacuum phase change heatexchanger

本文对真空相变换热器的传热特性进行了试验研究，主要研究了真空度、换热器内媒质水充液量、水流量、压力以及温度等对该换热器换热性能的影响。研究表明：真空度在低温下对传热有较大的影响，而在高温时这种影响变小。这一点体现了该换热器低温传热优良的性能。

his paper presents an experirnental study of the heattransfer characteristics of vacuurn phase change heat ex-changer.The effects of vacuum degree,amount of phasechange medium filled in the heat exchanger, water flowrate,pressure,temperature on the heat transfer characteris-tics are presented.The result shows that the vacuum de-gree has a significant effect on heat transfer coefficient un-der a low temperature condition,and the effect becomessmall under high tempcrature conditions,and this is the ex-cellant heat transfer characteristics of the heat exchanger atlow temperatures.