不同溴化锂溶液浓度及添加剂对气泡泵工作特性影响的实验研究

The Experimental Study on Performance of LiBr Solution Bubble Pumps With Different Concentration of Lithium Bromide and Additive

实验分析研究了溴化锂溶液驱动的气泡泵。实验中保持12 mm管径、960W加热功率、1244 mm提升高度不变,改变溴化锂溶液浓度、浸没高度和添加剂质量分数来测试分析气泡泵性能。浸没高度为378～528 mm。溴化锂溶液浓度为45.5%～59.5%。选取异辛醇作为添加剂,添加的质量分数为(40～70)×10^(-6)。实验结果表明,溴化锂溶液浓度对气泡泵的工作性能影响很大而异辛醇影响很小。

Experimental analysis of a bubble pump driven by LiBr solution is presented.Experiments are conducted with constant conditions as tube diameter of 12 mm,heating input of 960 W,pump lift of 1244 mm.Concentration of LiBr solution,driving head and mass fraction of additive are varied to analyze the bubble pump performance.Driving head is from 378 mm to 528 mm,concentration of LiBr solution is from 45.5%to 59.5%.2-ethyl-l-hexanol is added into LiBr solution as an additive with different mass fraction of（40～70）×10^（-6）.Experimental result indicates that the concentration of LiBr solution has tremendous influence on performance of bubble pump,while the effect of additive is little.