太阳能混合吸收式制冷空调系统的性能研究  

Research on performance of mixed absorption refrigeration for solar air-conditioning

作　　者：万忠民[1] 舒水明[2] 胡兴华[2] 王标华[2] 

机构地区：[1]湖南理工学院物理系,湖南岳阳414006 [2]华中科技大学能源与动力工程学院,湖北武汉430074

出　　处：《华中科技大学学报（自然科学版）》2006年第8期62-64,共3页Journal of Huazhong University of Science and Technology(Natural Science Edition)

基　　金：湖南省教育厅科研资助项目(04C271)

摘　　要：提出了一种新型太阳能混合吸收式制冷空调系统,可以较好地利用太阳能制冷,克服传统吸收式系统在利用太阳能实现制冷时存在整体效率低的弊端.混合吸收式制冷循环增设附加高压发生器,同时使高压发生器再生出LiBr溶液与低压吸收器的吸收后的溶液混合,进入高压吸收器,提高了高压吸收器中LiBr溶液的浓度使其压力降低.研究结果表明,新型制冷循环的制冷系数高达0.61,驱动热源的可利用温差最高可达33.2℃,新型太阳能混合吸收式空调系统的整体效率比两级吸收式太阳能空调系统有较大提高,最大提高幅度为94.5%,能更好地发挥太阳能空调的优势.A novel lithium bromide/water mixed absorption refrigeration cycle for solar air-conditioning was presented. It was suitable for utilization of solar air-conditioning and could overcome the drawback of low whole efficiency of traditional solar absorption refrigeration air-condition system. The accessorial high pressure generator was added in the cycle. The lithium bromide soltition flowing out from the high pressure generator was mixed with solution from low pressure absorber in order to increase lithium bromide solution concentration and decrease the pressure in the high pressure absorber. The performance of mixed absorption refrigeration cycle was analyzed. The theoretical analysis results show that the highest COP is 0.61 and the highest available temperature difference of heat resource is 33.2 ℃. The whole coefficient of performance of solar air-conditioning using mixed absorption cycle is 94.5% higher than that of two-stage absorption. The advantages of solar air-conditioning can be exerted markedly by the cycle.

关 键 词：太阳能 溴化锂 吸收式 可利用温差 整体效率 

分 类 号：TK511.3[动力工程及工程热物理—热能工程] TB616[一般工业技术—制冷工程]