CAJ | 학술논문

分别考察了在垂直螺旋管内降膜式第2类吸收热泵系统中,溶液流量、循环热水流量、操作温度对吸收器传热传质系数、系统性能系数COP及热效率E_(th)的影响.实验结果表明:随着溶液流量的增加,吸收器的传热传质系数也逐渐增大,而COP与E_(th)则有下降趋势;增加循环热水流量,吸收器传热传质系数也增大,但对COP与E_(th)的影响却较小;对于操作温度,吸收器传热传质系数会随着废热温度的升高而增大,随着冷却水温度的降低而增大.同时,通过软件ABSIM的模拟计算,得到的数据与实验数据吻合较好.
분별고찰료재수직라선관내강막식제2류흡수열빙계통중,용액류량、순배열수류량、조작온도대흡수기전열전질계수、계통성능계수COP급열효솔E_(th)적영향.실험결과표명:수착용액류량적증가,흡수기적전열전질계수야축점증대,이COP여E_(th)칙유하강추세;증가순배열수류량,흡수기전열전질계수야증대,단대COP여E_(th)적영향각교소;대우조작온도,흡수기전열전질계수회수착폐열온도적승고이증대,수착냉각수온도적강저이증대.동시,통과연건ABSIM적모의계산,득도적수거여실험수거문합교호.
The effects of solution flow rate, circular hot water flow rate and operating temperature on the heat and mass transfer coefficients of absorber, coefficient of performance COP, and thermal efficiency E_(th) were investigated in an absorption heat-transformer (AHT) system with falling film inside vertical spiral tubes. The experimental results show that the heat and mass transfer coefficients of absorber increase with the increase of solution flow rate in falling film and circular hot water. The COP and E_(th) decrease with the increase of falling film flow rate, and there is little influence on COP and E_(th) of the AHT system with the increase of circular hot water flow rate. The heat and mass transfer coefficients increase with the increase of waste heat temperature and the decease of cooling water inlet temperature. The calculations of computer code Absorption Simulation (ABSIM) agree well with the experimental data.