Effects of mass flow rate and the throat diameter of diffuser on vapor absorption into aqueous LiBr solution for a liquid-gas ejector using convergent nozzle

摘要

In order to improve the mass transfer efficiency,liquid-gas ejector is applied to the lithium bromide refrigeration system.Experimental analysis on liquid-gas ejector driven by aqueous LiBr solution is presented.Meanwhile,a model has been developed to predict the cooling capacity.The effects of mass flow rate and throat diameter of diffuser have been investigated.It has been observed that the cooling capacity increases with mass flow rate,and also increases with the throat diameter of diffuser from both the experiments and simulations; the required absorber volume per kW of cooling capacity increases as the throat diameter decreases; the empirical relationship could well predict the cooling capacity.