用温度波动规律判别水平管内蒸发时流型的实验研究

对制冷剂水平管内蒸发时流型与温度波动规律间的关系进行了研究，介绍了用管内气液两相流场中某些点处的温度波动规律判别流型的一种最简单的测试系统的组成。给出了敏感元件和放大器的设计方法，研究结果表明，用温度波动规律判别流型的新方法可以用于蒸发过程。

AN EXPERIMENTAL INVESTIGATION ON THE FLOW PATTERNS DETECTION DUKING EVAPORATION OF REFKIGERANTS INSIDE A HORIZONTAL TUBE BY RESPONSE OF THET EMPERATURE EFLUCTUATIONS

An experimental investiagtion is made on the temperature fluctuations corresponding tothe flow patterns during refrigerant evaporation inside a horizontal tube, An introduction ispresented to the simplest measuring system used for detecting flow patterns inside tubes byusing the temperature fluctuations in two-phase flow at some positions.The design methodof the amplifier and the structure of the rapidly-responding thermocouples are also present-ed.On the basis of the experiments, the new method, detecting flow patterns by the re-sponse of the temperature fluctuations, proved to be able to extend to evaporation.