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Title: State-space modelling for the ejector-based refrigeration system driven by low grade energy
Authors: Xue, Binqiang
Cai, Wenjian
Wang, Xinli
Keywords: DRNTU::Engineering::Electrical and electronic engineering
DRNTU::Engineering::Mechanical engineering::Energy conservation
Issue Date: 2014
Source: Xue, B., Cai, W., & Wang, X. (2015). State-space modelling for the ejector-based refrigeration system driven by low grade energy. Applied thermal engineering, 75, 430-444.
Series/Report no.: Applied thermal engineering
Abstract: This paper presents a novel global state-space model to describe the ejector-based refrigeration system, which includes the dynamics of the two heat exchangers and the static properties of ejector, compressor and expansion valve. Different from the existing methods, the proposed method introduces some intermediate variables into the dynamic modelling in developing reduced order models of the heat exchangers (evaporator and condenser) based on the Number of Transfer Units (NTU) method. This global model with fewer dimensions is much simpler and can be more convenient for the real-time control system design, compared with other dynamic models. Finally, the proposed state-space model has been validated by dynamic response experiments on the ejector-based refrigeration cycle with refrigerant R134a.The experimental results indicate that the proposed model can predict well the dynamics of the ejector-based refrigeration system.
ISSN: 1359-4311
DOI: 10.1016/j.applthermaleng.2014.09.037
Rights: © 2014 Elsevier Ltd. This is the author created version of a work that has been peer reviewed and accepted for publication by Applied Thermal Engineering, Elsevier Ltd. It incorporates referee’s comments but changes resulting from the publishing process, such as copyediting, structural formatting, may not be reflected in this document. The published version is available at: [].
Fulltext Permission: open
Fulltext Availability: With Fulltext
Appears in Collections:EEE Journal Articles

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