同心套管与异心套管管排余热回收装置的实验研究

Experimental Investigation on the Concentric and Nonconcentric Waste Heat Recovery Device

本文设计了一套以铝为壳体,丙酮为工质的新型热管换热器。研究了不同热负荷,其系统倾角分别为30°、45°、60°、75°、90°,工质充液率为30%条件下的运行特性。通过改变倾斜角度及加热段长度和操作温度来测试余热回收系统的最佳传热性能和效率。结果显示:在实验条件下,最大传热量随着操作温度的升高、蒸发段长度的增长而增大,最佳倾斜角度为60°,最佳长度为270 mm。

A series of tests were carried out on a new structure of heat pipe exchanger. It uses acetone as working fluid. The investigation was conducted at different heat loads,the tilt angles of device are 30°、45°、60°、75°、90°and the charging ratio of working fluid is 30%.The angles,length and operation temperature was adjusted in the test to investigate the thermal performance and effectiveness of heat recovery system. It reveals that the maximum heat transport increases with the augment of the operation temperature,evaporation length. Eventually,the experimental data showed that the optimum operating angle is 60°with evaporation length of 270 mm.