Performance Estimation of Vapour Compression Refrigeration System using Real Gas Model

3rd International Conference on Materials and Manufacturing Engineering 2018

Vithya, P.^1 ; Sriram, G.^1 ; Arumugam, S.^1 ; Adithiya, V.^1 ; Anand Raj, D.^1 ; Aswin, V.^1 ; Balaji, R.^1

Department of Mechanical Engineering, Sri Chandrasekharendra Saraswathi Viswa Mahavidyalaya, Tamilnadu, Kanchipuram

631561, India^1

关键词: Coefficient of Performance;    Exhaust temperature;    Ideal gas model;    Numerous models;    Performance estimation;    Spatial arrangements;    Vapour compression refrigeration systems;    Working fluid;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/390/1/012111/pdf
DOI  :  10.1088/1757-899X/390/1/012111

来源: IOP

【 摘 要 】

The performance of a vapour compression refrigeration system depends greatly on the spatial arrangement of the components, properties of the refrigerant and lubricant. Numerous models have been developed by using these properties to predict the performance of the vapour compression refrigeration system. The usual ideal gas model does not yield accurate results due to its limited range. In this study, an analytical real gas model has been developed for heat transfer in the evaporator and work output rate of compressor to achieve the coefficient of performance (COP) of the system. This real gas model is validated against the investigational data and the end result obtained was consistent with an error band of 10% for exhaust temperature and 7% for COP. This model can be used to predict the COP of any vapour compression refrigeration system, given that the thermodynamic properties of the working fluid and required dimensions of the system are known. However, it cannot be extended to compressor oils due to it does not differentiate between necessary properties like viscosity of refrigerator oil.