溴化锂绝热、增压双效吸收式制冷循环.pdf

制冷及低温技术的发展与应用研讨会暨我国制冷及低温工程博士点20周年纪念 溴化锂绝热、增压双效吸收式制冷循环 陈焕新欧汝浩周丽 (华中科技大学制冷与低温工程系) 摘要：吸收器是溴化锂吸收式制冷循环中最大的部件，传统吸收器换热面积占机组的40％左右，采用传 热传质分离吸收器其传热面积不到传统吸收器的30％，大大改善了吸收器的传热效果．本文在传热传质分 离双效吸收式制冷循环的基础上，增加了一台增压器以提高绝热吸收器压力，强化循环传质能力．根据模 拟结果，补偿了少量电功的增压系统，可以有效降低循环总传热面积；通过降低循环溶液浓度，还可以达 到降低循环驱动热源温度的目的，且循环热力系数与增压前基本相当． 关键词：吸收式制冷传热传质分离吸收压力传热面积驱动温度 doubleeffect circle heatandmasstransfer Boosting absorption refrigerationusing ’ absorber separation ChenHuanxinOuRuhaozhouli of and ofScienceand Cryogenics University Technology) (DepartmentRefrigeration Engineering；Huazhong Abstract：AbsorberiSthemost inlithium．bromide transfer absorption importantcomponent refrigerator，heat about areasoftraditionaIabsorberare 40％ofallthe heatandmasstransfer absorberiS components．If separation heattransferareasiSIeSSthan tothetraditional absorber’Sheat used，its 30％compare one。greatlyimprove transfereffect．Basedonthedoubleeffect circle heatandmasstransfer absorptionrefrigerationusing separation absorber．a iSaddedinthis to the oftheadiabatic itsmass pressurizer studyheightenpressure absorber，strengthen that transfer resultshowsthe alittleamount reduce ability．The boostingsystemcompensating ofelectricity，could heattransferareasofthe lower ofheatresource