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叉排管束与M-W引流丝网交替吸收器是一种将热质耦合传递与绝热传质相结合而开发的新型吸收器。该文基于VOF方法建立溴化锂吸收器中溶液降膜吸收水蒸汽过程的CFD模型,展示在叉排管束与M-W引流丝网交替吸收器中和对比方案的光管束吸收器上溶液的流动状态以及温度和浓度分布云图;给出不同溶液进口喷淋密度和溶液浓度对2种吸收器传热传质性能的影响的模拟和实验结果,表明在计算范围内,叉排管束与M-W引流丝网交替吸收器的传热系数和传质系数的平均值可比光管束吸收器分别提高33.4%和55.4%。
The fork tube bundle and the M-W diversion screen alternating absorber is a new type of absorber developed by the combination of heat and mass coupling and adiabatic mass transfer. Based on the VOF method, the CFD model of the falling film absorption water vapor in lithium bromide absorber was established. The flow state of the solution on the absorber and the temperature of the absorber And the concentration distribution cloud chart. The simulation and experimental results on the heat and mass transfer performance of two kinds of absorbers under different solution inlet spray densities and solution concentrations are given. The results show that in the calculation range, The average heat transfer coefficient and mass transfer coefficient of the device can be increased by 33.4% and 55.4% respectively compared with that of the light absorber.