The Study On Generation Temperature And Cooling Performance Of Solar Steam Jet Refrigeration Machine

Due to the increasingly serious problem of shortage of resources and environmental degradation in recent years,we have to look for new renewable energy.Solar,as basic energy renewable energy,not only economic and clean but also "inexhaustible,inexhaustible." Solar ejector refrigeration system began to receive attention.In this experiment,solar heat,the refrigerant selection R134 a.The solar steam jet refrigeration system more systematic experimental study of solar ejector refrigeration system core components-injector design,simulation optimization and other aspects.In this paper,pressure and gas power function method calculated the size of the ejector,and then by Fluent analog optimization injector size.Finally,according to the optimized size of the injection molding process.To build a complete set of solar steam jet refrigeration system bench in the laboratory experiments.Finally,the experimental data in the record is drawn into a curve,and the experimental results were analyzed,the conclusions of 1,when the condensing temperature and the temperature remains constant,injector discharge coefficient,the system cooling capacity and COP with evaporation The elevated temperature and elevated.The experimental conditions for Tc = 33 ° C,Tg = 80 ° C,Te =(0,3,6,9,12,15,18)° C,the experiments show that when Te = 18 ° C above three performance indicators are reaches its maximum value,respectively,of 0.286,2.43 kW and0.24.2,condensing and evaporating temperature remains constant,the entrainment ratio,the system cooling capacity and COP with the occurrence of elevated temperature increases reduce.The experimental conditions for Tc = 33 ° C,TE = 6 ° C,Tg =(60,63,66,69,72,75,78,81,84,87,90)° C,Tg = 84 ° C more than three performance indicators have reached the maximum value,of 0.223,2.02 KW and 0.204,respectively.3,the impact generated by the evaporating temperature change on the system performance indicators to be higher than a temperature change occurs the impact on system performance indicators.4,After adding heat to heat storage water tank,the system can keep the optimal temperature within full day but the COP of the system decreased.The paper also records and inspection of the collection efficiency of the heat pipe vacuum tube collector,June 18,2012 On this day,between 12:00 to 13:00 solar radiation values to achieve the highest value 1200W/m~2 outdoor temperature and the collection efficiency reaches its maximum of32 ° C and 0.684,and the occurrence of the maximum temperature of 70 ° C is at 15:00,this time due to the temperature of the heat transfer lag makes maximum delay.