摘要
为了研究160—220 K温区内槽道热管的传热特性,搭建槽道热管实验台,通过改变工作温度、加热功率、充液率以及倾斜角度,分析乙烷工质槽道热管等温性能和传热特性。实验结果发现:乙烷槽道热管在160—220 K温区下工作时,传热温差在2 K以内,充液率100%和顺重力倾斜角10°时热管工作性能最佳;随着工作温度的下降,工质的总压降增大,导致槽道热管的温差增大,等温性能下降;当倾斜角为40°时,热管温度出现波动现象,功率在10—50 W变化过程中,加热功率越大,热阻越小,最大热阻为0.22 K/W。通过合理分布热源位置和增大加热功率可降低槽道热管在不利工作角度下的传热热阻,提高热管传热性能。
In order to study the heat transfer characteristics of grooved heat pipes at 160-220 K,a grooved heat pipe experimental bench was constructed.By varying the operating temperature,heating power,liquid filling rate and inclination angle,the isothermal performance and heat transfer characteristics of the ethane grooved heat pipe were analyzed.The experimental results show that when the ethane grooved heat pipe works at 160-220 K,the heat transfer temperature difference is within 2 K.The working performance of the heat pipe is the best when the liquid filling rate is 100%and the inclination angle along gravity is 10°.As the working temperature decreases,the total pressure drop of the working fluid increases,causing the temperature difference of the grooved heat pipe to increase and the isothermal performance to decrease.When the inclination angle is 40°,the temperature of the heat pipe fluctuates.During the power change from 10 W to 50 W,the larger the heating power,the smaller the thermal resistance,and the maximum thermal resistance is 0.22 K/W.By reasonably distributing the position of the heat source and increasing the heating power,the heat transfer resistance of the grooved heat pipe can be reduced at an unfavorable working angle.The heat transfer performance of the heat pipe can be improved.
作者
位翠翠
崔晓钰
蒋珍华
李南茜
WEI Cuicui;CUI Xiaoyu;JIANG Zhenhua;LI Nanxi(School of Energy and Power Engineering,University of Shanghai for Science and Technology,Shanghai 200093,China;Shanghai Institute of Technical Physics,Chinese Academy of Sciences,Shanghai 200083,China)
出处
《化学工程》
CAS
CSCD
北大核心
2023年第9期49-54,共6页
Chemical Engineering(China)
基金
上海市青年科技英才扬帆计划(20YF1455800)。
关键词
乙烷
槽道热管
传热特性
充液率
倾斜角度
ethane
grooved heat pipe
heat transfer characteristic
filling rate
inclination angle
