Numerical Modeling of Ejector and Development of Improved Methods for the Design of Ejector-Assisted Refrigeration System

Hafiz Ali Muhammad, Hafiz Muhammad Abdullah, Zabdur Rehman, Beomjoon Lee, Young-Jin Baik, Jongjae Cho, Muhammad Imran, Manzar Masud, Mohsin Saleem and Muhammad Shoaib Butt
Additional contact information
Hafiz Ali Muhammad: Thermal Energy Systems Laboratory, Korea Institute of Energy Research, Daejeon 305-343, Korea
Hafiz Muhammad Abdullah: Wah Engineering College, University of Wah, Wah Cantt, Punjab 47040, Pakistan
Zabdur Rehman: Department of Mechanical Engineering, Air University Islamabad, Aerospace and Aviation Campus Kamra, Kamra 43570, Pakistan
Beomjoon Lee: Thermal Energy Systems Laboratory, Korea Institute of Energy Research, Daejeon 305-343, Korea
Young-Jin Baik: Thermal Energy Systems Laboratory, Korea Institute of Energy Research, Daejeon 305-343, Korea
Jongjae Cho: Thermal Energy Systems Laboratory, Korea Institute of Energy Research, Daejeon 305-343, Korea
Muhammad Imran: Mechanical Engineering and Design, School of Engineering and Applied Sciences, Aston University, Birmingham B4 7ET, UK
Manzar Masud: Department of Mechanical Engineering, Capital University of Science and Technology, Islamabad 44000, Pakistan
Mohsin Saleem: School of Chemical and Materials Engineering (SCME), National University of Sciences and Technology (NUST), Sector H-12, Islamabad 44000, Pakistan
Muhammad Shoaib Butt: School of Chemical and Materials Engineering (SCME), National University of Sciences and Technology (NUST), Sector H-12, Islamabad 44000, Pakistan

Energies, 2020, vol. 13, issue 21, 1-19

Abstract: An ejector is a simple mechanical device that can be integrated with power generation or the refrigeration cycle to enhance their performance. Owing to the complex flow behavior in the ejector, the performance prediction of the ejector is done by numerical simulations. However, to evaluate the performance of an ejector integrated power cycle or refrigeration cycle, the need for simpler and more reliable thermodynamic models to estimate the performance of the ejector persists. This research, therefore, aims at developing a single mathematical correlation that can predict the ejector performance with reasonable accuracy. The proposed correlation relates the entrainment ratio and the pressure rise across the ejector to the area ratio and the mass flow rate of the primary flow. R141b is selected as the ejector refrigerant, and the results obtained through the proposed correlation are validated through numerical solutions. The comparison between the analytical and numerical with experimental results provided an error of less than 8.4% and 4.29%, respectively.

Keywords: ejectors; CFD; empirical correlation; refrigeration cycle (search for similar items in EconPapers)
JEL-codes: Q Q0 Q4 Q40 Q41 Q42 Q43 Q47 Q48 Q49 (search for similar items in EconPapers)
Date: 2020
References: View references in EconPapers View complete reference list from CitEc
Citations: View citations in EconPapers (1)

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