Study On Direct Evaporationg Solar Ejctor Refrigeration Sustem

With the rapid development of energy-saving technology, a wide range of people are interested in using of solar as a low heat for ejector refrigeration system. At present, solar collector system mainly through the medium of water as injection system in solar ejector refrigeration system, but the system need of a water tank, circulating pump,etc. cause the large cvolume system and poor economy that a low application of refrigeration cycle for the entire injection system. Aiming at this problem, a solar collector united generator refrigeration system which replace traditional ejector generator with phase heat exchange to reduce intermediate heat transfer in order to improve the application and energy-saving effect is first proposed in this thesis. The main work includes the following three aspects.(1)This paper is based on Sokolov’s ejector design theory, combined with the constant pressure mixing and constant area mixing theory, and the principle of fluid dynamics, thermodynamics,empirical formula, the structural design of solar ejector refrigeration model was get, which combine with a new Environment-friendly refrigerant R134a. Make programmer by Visual Basie6.0, and use it to calculate the ejector of a solar simulated office room ejector refrigeration system. In application of flow analysis software FLUENT completed the simulation of flow field and characteristics analysis of the ejector model.(2) Established an efficient solar collector united generator flat plate model, and analysis of the heat transferring process and efficiency.(3) According to the design theory of solar ejector refrigeration system and a solar simulated office room, and establish direct evaporation solar ejector refrigeration test bench.