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。
Absorber is the most important component in lithium - bromide absorption refrigerator, heat transfer areas of traditional absorber are about 40 % of all the components. If heat and mass transfer separation absorber is used, its heat transfer areas is less than 30% compare to the traditional one, greatly improve absorber~ heat transfer effect. Based on the double effect absorption refrigeration circle using heat and mass transfer separation absorber, a pressurizer is added in this study to heighten the pressure of the adiabatic absorber, strengthen its mass transfer ability. The result shows that the boosting system compensating a little amount of electricity, could reduce heat transfer areas of the system effectively, it could also lower the temperature of heat resource effectivelv bv decreasing the concentration of the solution with the COP remained almost the same as the former one.
出处
《流体机械》
CSCD
北大核心
2007年第5期75-78,86,共5页
Fluid Machinery
基金
湖南省自然科学基金项目(04JJ3086)
中国博士后基金项目(2003034121)
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
absorption refrigeration
heat and mass transfer separation
absorption pressure
heat transfer areas
temperature of heat resource
