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本文提出了一种在传统气泡泵理论模型中引入阻力损失系数的新方法,考虑了从储液罐到发生器之间的阻力损失对气泡泵输送性能的影响,对气泡泵所输送的稀溶液流量进行修正计算,并给出了阻力损失系数与管径、浸没比的经验关联式。采用该新方法,对6 mm、8 mm和12 mm管径的R134a-DMF溶液气泡泵输送性能进行了实验数据和模型预测分析对比。结果表明,用本文所提出新方法和经验关联式所得到的预测结果与实验结果吻合较好,比传统气泡泵理论模型预测有很大的提高,为扩散吸收制冷系统的气泡泵输送性能优化设计奠定了良好的基础。
In this paper, a new method of introducing the drag loss coefficient into the theoretical model of bubble pump is proposed. The influence of the resistance loss from the reservoir to the generator on the conveying performance of the bubble pump is considered. For dilute solution delivered by the bubble pump Flow rate correction calculation, and gives the resistance loss coefficient and diameter, immersion ratio empirical correlation. Using this new method, experimental data and model predictive analysis were compared on the performance of 6 mm, 8 mm and 12 mm diameter R134a-DMF bubble pumps. The results show that the prediction results obtained by the new method and empirical correlation presented in this paper are in good agreement with the experimental results, which are much better than those predicted by the traditional theoretical model of bubble pump, so as to optimize the design of the bubble pump for the diffusion and absorption refrigeration system Laid a good foundation.