A new model for depicting mass flow rate characteristic of electronic expansion valves
A new model for depicting mass flow rate characteristic of electronic expansion valves
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DOI：
10.1016/j.expthermflusci.2007.03.008
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发表时间：
2007-10
影响因子：
3.2
通讯作者：
Jinghui Liu;Jiangpin Chen;Q. Ye;Zhi-jiu Chen
中科院分区：
文献类型：
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作者：
Jinghui Liu;Jiangpin Chen;Q. Ye;Zhi-jiu Chen
对电子膨胀阀的流量特性进行了实验研究。将均相平衡流体模型（HEM）和冻结流模型（FFM）相结合，建立了描述电液阀质量流量特性的新模型。根据试验数据，提出了亚稳系数的计算公式。与传统模型中的质量流量系数不同，亚稳系数与入口压力和出口状态参数无关。该方程仅关联了入口过冷度和通流面积。与实验结果相比，模型预测的质量流量偏差在-8.59%~7.56%之间。
This paper experimentally investigates the mass flow rate characteristic of an electronic expansion valve (EEV). A new model for depicting the mass flow rate characteristic of EEVs, which employs the combination of the homogeneous equilibrium fluid model (HEM) and the frozen flow model (FFM), is developed. On the basis of tested data, an equation of meta-stability coefficient is proposed. Different from the mass flow coefficient in the conventional model, the meta-stability coefficient has nothing to do with the inlet pressure and the outlet state parameters. Only the inlet sub-cooled degree and the flow area are correlated in the equation. Compared with the experimental results, the deviation of the predicted mass flow rate by the model is in the range of −8.59% to 7.56%.