以R600A为工质的分离式热管的实验研究

Experimental research of separated heat pipe using R600A as working fluid

对分离式热管的整体热量传递特性进行了实验研究。以蛇形翅片管作为冷凝段和蒸发段进行热管实验,探讨了蒸发器进风面风温及分离式热管蒸发器与冷凝器之间高度差、工质充注量对分离式热管的影响。实验表明,随着蒸发器进风温度的升高,蒸发器与冷凝器换热系数都是呈现先增大后减小的趋势。在冷凝端进风温度恒定为16.55℃、蒸发端进风温度低于60℃时,以R600A为工质的分离式热管的传热量曲线近似于二次曲线,蒸发端进风温度高于60℃时,其传热量曲线近似于一条直线。加大充液率及增加蒸发器与冷凝器的高度差,分离式热管的传热能力均会得到提高。

This article research the whole energy transportation of separated type heat pipe. By studying the finned tube coil as the condenser section and the evaporator section, this paper discussed that separated type heat pipe was influenced by different irdet wind temperature of evaporator, height difference between evaporator section and condenser section, working substance fill- ing quantity. The experiment indieated that heat transfer coefficient of evaporator and condenser increased afterward reduced with increasing of entering the wind temperature of evaporator; when inlet wind temperature of condenser section as constant tempera- ture is 16.55℃, inlet wind temperature of evaporator section is below 60℃, heat transferring eapaeityg line is conic; inlet wind temperature of evaporator section is beyond 60℃, heat transferring capacity＇s line is straight line ; heat transferring capacity will be enhanced with augmentation of filling rate and extending height difference between evaporator section and condenser section.