Einstein制冷系统气泡泵理论模型修正验证研究

Correction and Validation of Theoretical Model of Bubble Pump in Einstein Refrigeration System

基于漂移流模型理论建立了气泡泵理论模型,对Einstein制冷系统中气泡泵在绝热弹状流下的提升特性进行理论分析,并以饱和纯水为工质对气泡泵稳态性能进行实验研究。根据气泡泵性能参数的实验值和理论计算值,采用最小二乘法对气泡泵阻力损失系数进行拟合,对气泡泵理论模型进行修正并得到相应的实验关联式,并对该关联式的可信度进行验证。结果表明:实验结果与理论修正结果吻合性较好,误差在5.3%以内,修正结果具有较强准确性和可行性,完善了气泡泵理论模型。为气泡泵的优化设计提供理论指导,对进一步研究Einstein制冷系统气泡泵性能具有重要参考价值。

The bubble pump theoretical model was correspondingly established based on drift flow model theory.The analysis was performed on the working characteristics of the bubble pump operating under adiabatic slug flow condition in Einstein refrigeration system. The experiment was conducted on the steady-state process of the bubble pump with saturated water as the working fluid.The bubble pump resistance loss coefficient was fitted with the theoretical calculation data and experimental data of bubble pump by the least square fitting. The theoretical model of bubble pump was corrected to acquire the new empirical correlation, which was verified in terms of credibility . The results show that the experimental result is in reasonable agreement with the theoretical calculation of correction values.The data error of resistance loss coefficient fitted is within 5.3﹪ and the correction results have strong accuracy and feasibility, which perfect the theoretical model of bubble pump.The conclusion provides a theoretical guidance for the optimal design of the bubble pump, which also means a valuable reference for the further research of the bubble pump performance in Einstein refrigeration system.