NUMERICAL STUDIES ON THE PERFORMANCE OF A BUBBLE PUMP
Increase in the consumption of electrical energy worldwide has laid the emphasis on replacing electrical energy with thermal energy wherever possible.In this paper,the bubble pump,which is ‘heart of diffusion-absorption refrigeration system,has been investigated numerically.A thermally driven bubble pump,which can be powered by waste heat or solar thermal energy,is used to lift the liquid.As a result of the absence of any mechanical moving part,the refrigerator is silent and very reliable in addition to an economical and environmental friendly device.The concept of such a pump is already in existence but optimization studies are yet to be extensively investigated.This paper deals with the optimization of various parameters of the bubble pump using water as the working fluid.Parametric studies are carried out and a design optimization for maximum efficiency is performed for various operating conditions.Numerical simulation of the bubble pump is carried out using simple numerical equations which assume slug flow in the bubble pump.The diameter of the pipe and the position of the heating element are varied and the effect it has on time taken,pumping ratio and pumping ratio for one pumping cycle is studied.
diffusion-absorption refrigeration bubble pump water slug flow numerical simulation
L.Bruno Augustin Jigar Golecha K.G.Sai Shreenaath Vishnu Swami M.Suresh
Department of Mechanical Engineering, SSN College of Engineering, India
国际会议
济南
英文
203-208
2013-05-18（万方平台首次上网日期，不代表论文的发表时间）