Experimental Study On Lifting Characteristic Of Double-Stage Lithium Bromide Bubble Pump With Different Diameters

Energy shortage is a very serious problem in the world. Energy conservation and environment protection are the two issues that are concerned by the international community at present. Lithium bromide absorption system is not only can use solar, industrial waste heat and other low grade energy, but it’s also friendly to the environment. In this paper, in order to improve the utilization of energy, bubble pump is used to replace the traditional mechanical solution pump, and a lot of experimental researches about bubble pump are conducted.The main work can be described as follow:(1) Based on the theoretical knowledge of double-stage bubble pump, test platform is designed and built.(2) The effects of heat input and driving head on performance of bubble pump are investigated experimentally in the absorber cooling water flow down the conditions.(3) Experiments using different concentrations of water and lithium bromide solution as a working fluid, for double-stage bubble pump pump efficiency, the starting time and the two periodic bubble pump with heating power and stability, solution concentration and immersion height and diameter changes made experimental study.