Investigation On Solar-powered Jet Compression Joint Refrigeration System Driven By Capillary Force

In this paper, solar injection compression joint refrigeration system driven by the capillary pump is investigated. This system uses the capillary suction action instead of the pump working to drive liquid medium. The system works by solar pressurization spray cooling way with compressor in the sun, which improves coefficient of performance of the system. The system works by compression refrigeration manner without solar or night, which avoid the general injection refrigeration system using auxiliary power supply to consume large amounts of energy of thermally driven heat.It plays a crucial role in improving the economy rate of all-weather of solar energy spray cooling system.Firstly, this paper introduces the background and significance of research and development of the solar energy air conditioning at home and abroad, Presents a round-the-clock refrigeration cases:solar-powered jet compression joint refrigeration system driven by capillary force.Secondly, introduces knowledge of the main components in joint refrigeration system, which is the research must grasp, and liquid medium in the refrigeration system is studied. Then, a systematic analysis of the working principle is presented, VB program calculation model is wrote to calculate coefficients of the jet injector, thermodynamics knowledge is used to calculate coefficient of the performance of different operation parameters and presents performance advantages compared with other refrigeration system in energy conservation and environmental protection, which proves the feasibility of this system. In the same design conditions, joint refrigeration system has certain energy-saving advantage compared with injection refrigeration system, impressing refrigeration system and supercharged injection refrigeration system. Again, under certain operating conditions and the system design thermal load conditions, VB program and FLUENT software is used to simulate ejector with the numerical analysis and the optimization design.Finally, the size of the system main part is designed and calculated, by founding, based on calculation program with the solar collectors mathematical model,the coefficient of the performance of the system,system refrigeration quantity and compressor power are presented during the day in the different periods of solar radiation intensity of illumination. Results show that:In refrigerating capacity, joint refrigeration system using frequency compressor can increase refrigerating capacity by increasing pressure machine speed to meet the needs of the user purpose compared with pressurization injection refrigeration system.System can work stably in the best condition at 12:00 to 15:00, after 16:00the coefficient of the performance of the system decrease, it is feasible for the round-the-clock operation of the system with the use of the compressor.