A predictive model for the performance of the ejector in refrigeration system

被引：27
|
作者：
Liu, Jiapeng [1 ]
Wang, Lei [1 ]
Jia, Lei [1 ]
机构：
[1] Shandong Univ, Sch Control Sci & Engn, Jinan 250061, Shandong, Peoples R China
来源：
ENERGY CONVERSION AND MANAGEMENT | 2017年 / 150卷
关键词：
Ejector; Predictive model; Refrigeration system; Control; OPTIMIZATION; EFFICIENCIES; DRIVEN;
D O I：
10.1016/j.enconman.2017.08.021
中图分类号：
O414.1 [热力学];
学科分类号：
摘要：
Ejectors are widely used in the refrigeration system and the evaluation of the ejector performance is important for the refrigeration system real time control. In this paper, a simple model is proposed to predict the performance of the ejector in the refrigeration system. A theoretical model is developed based on the thermodynamic principles and ideal gas property firstly. And then the proposed model is simplified to linear equations with four unknown parameters which can be determined by traditional identification methods easily. The accuracy of the model is validated by literature and experimental data. The results show that the model has a strong ability to predict the ejector entrainment ratio and critical back pressure. Furthermore, the proposed method is more accuracy and simpler than the previously published models. It is hoped that the proposed model is useful for the real time control of the ejector refrigeration system.
引用
收藏
页码：269 / 276
页数：8
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