| The increasingly severe environmental problems have promoted the rapid development of absorption refrigeration technology.In order to solve the problem of low solution desorption rate of traditional generator,the performance of cyclone generation absorption refrigeration system was analyzed based on the principle of cyclone separator.The numerical simulation of the internal flow field and desorption characteristics of the swirl generator is carried out.The results show that:with the increase of the number of inlets,the pressure and desorption temperature in the swirl generator first decrease and then increase,and the outlet velocity of water vapor first increases and then decreases.The desorption performance of the cyclone generator is the best;by increasing the low height ratio and inlet velocity of the cyclone generator,the internal pressure and the desorption temperature of the solution can be reduced.The performance experiments of swirl generation absorption refrigeration systems with different inlet numbers show that the COP first increases and then decreases with the increase of the solution flow rate,which is positively correlated with the heat source temperature;when the solution flow rate is 0.18 m~3/h,the heat source temperature is85℃,the COP of the system using the double-inlet swirl generator can reach 0.775,which is 4.73%higher than that of the single-inlet swirl generator.The cooling coefficient of swirl generator absorption refrigeration system is calculated,and the results show that the COP first decreases and then increases with the increase of the number of swirl generator inlets,which is positively related to the height ratio and the inlet velocity.When the inlet temperature is 90℃,the number of inlets of the cyclone generators is 2,the height ratio is 3.5,and the inlet velocity is 15 m/s,the system COP reaches 0.875,which is obviously better than the cooling coefficient of the traditional absorption refrigeration system.Figure 53;Table 14;Reference 74... |
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