【摘要】 以热水作为驱动热源,采用活性炭-甲醇作为吸附制冷工质对构建太阳能热水驱动固体吸附式制冰系统。实验研究在有阀门控制和无阀门控制时,在不同加热解吸附时间下的系统制冷性能。对无阀门控制,则重点研究冷凝温度对系统制冷性能的影响。结果表明,在接收能量相当的情况下,无阀门控制时系统的制冷性能高于有阀门控制时系统的制冷性能,平均制冷效率提高20%。冷凝温度越低,系统日制冰量越大,系统制冷效率越高。当冷凝温度为10℃时,无阀门控制系统日制冰量可达8.5 kg,系统纯吸附制冷性能系数(COP_pure)为0.0893。更多还原

【Abstract】 In order to overcome the shortcomings of inhomogeneous heating and poor cooling performance of adsorbentbed in heating and desorption process of the flat-plate solar adsorption refrigeration system,a solid adsorption ice-makingsystem driven by solar hot water was established,and the activated carbon-methanol was utilized as the adsorptionrefrigerant pair. The refrigeration performance study of adsorption ice-making system with and without valve control wasconducted under the different heating and desorption time conditions. The effect of condensing temperature on the coolingperformance of the system without valve control was investigated further. The experimental results show that when theenergy accepted by the system is similar,the cooling efficiency of system without valve control is higher than that ofsystem with valve control,and the average cooling efficiency is higher than that of system with valve control by 20%. Thelower the condensing temperature is,the larger the system daily ice-making capacity is,and the higher the coolingefficiency of the system is. When the condensing temperature is 10 ℃,the daily ice-making capacity of the systemwithout valve reaches to 8.5 kg and the coefficient of performance(COP_pure)of pure adsorption refrigeration system is0.0893.更多还原