【摘要】 分析了电子膨胀阀内部制冷剂的壅塞流动特性,应用均相流和冷冻流模型描述电子膨胀阀的流量特性,用亚稳态特性系数建立膨胀阀质量流量计算模型,并采用某型号电子膨胀阀的实验数据与所建模型的计算值进行对比.结果表明,该模型的计算值与实测值的偏差在-8.59%~7.56%以内.更多还原

【Abstract】 The choked refrigerant flow characteristics of electronic expansion valve(EEV) was analyzed.A metastability coefficient was proposed by employing the homogeneous equilibrium flow model and frozen flow model to depict the flow characteristics of EEVs,and the coefficient was applied to build a mass flow model of EEV. The modeling results were compared with the experimental data and the deviation of the predicted metastability coefficient by the model is in the range of-8.59% to 7.56%.更多还原