CFD Simulation and Experimental Study of Working Process of Screw Refrigeration Compressor with R134a

Huagen Wu, Hao Huang, Beiyu Zhang, Baoshun Xiong and Kanlong Lin
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Huagen Wu: School of Energy and Power Engineering, Xi’an Jiaotong University, Xi’an 710049, China
Hao Huang: School of Energy and Power Engineering, Xi’an Jiaotong University, Xi’an 710049, China
Beiyu Zhang: School of Energy and Power Engineering, Xi’an Jiaotong University, Xi’an 710049, China
Baoshun Xiong: School of Energy and Power Engineering, Xi’an Jiaotong University, Xi’an 710049, China
Kanlong Lin: School of Energy and Power Engineering, Xi’an Jiaotong University, Xi’an 710049, China

Energies, 2019, vol. 12, issue 11, 1-14

Abstract: Twin-screw refrigeration compressors have been widely used in many industry applications due to their unique advantages. The performance of twin-screw refrigeration compressors is generally predicted by one-dimensional numerical simulation or empirical methods; however, the above methods cannot obtain the distribution of the fluid pressure field and temperature field inside the compressor. In this paper, a three-dimensional model was established based on the experimental twin-screw refrigeration compressor. The internal flow field of the twin-screw compressor was simulated by computational fluid dynamics (CFD) software using structured dynamic grid technology. The flow and thermodynamic characteristics of the fluid inside the compressor were analyzed. The distribution of the internal pressure field, temperature field, and velocity field in the compressor were obtained. Comparing the P-θ indicator diagram and the performance parameters of the compressor with the experimental results, it was found that the results of the three-dimensional numerical simulation were consistent with the experimental data. The maximum error was up to 2.578% on the adiabatic efficiency at the partial load working condition. The accuracy of the 3D numerical simulation of the screw compressors was validated and a new method for predicting the performance of twin-screw refrigeration compressors was presented that will be helpful in their design.

Keywords: twin-screw refrigeration compressor; CFD; thermodynamic performance; P-? indicator diagram (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: 2019
References: View references in EconPapers View complete reference list from CitEc
Citations: View citations in EconPapers (3)

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