Determination of Effective Flow and Force Areas for Reed Type Compressor Valve Systems: Part 1—Model Derivation Using CFD Analysis Results

Jeong Deok Park, Seong Jin Lee, Jun-young Ahn, Jinkook Kim and Jong Bong Kim ()
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Jeong Deok Park: Department of Automotive Engineering, Seoul National University of Science and Technology, Seoul 01811, Republic of Korea
Seong Jin Lee: Department of Automotive Engineering, Seoul National University of Science and Technology, Seoul 01811, Republic of Korea
Jun-young Ahn: Department of Automotive Engineering, Seoul National University of Science and Technology, Seoul 01811, Republic of Korea
Jinkook Kim: Recipro Compressor Project, H&A Fundamental Technology R&D Lab., LG Electronics Inc., Seoul 08592, Republic of Korea
Jong Bong Kim: Department of Automotive Engineering, Seoul National University of Science and Technology, Seoul 01811, Republic of Korea

Energies, 2023, vol. 16, issue 7, 1-14

Abstract: The dynamic behavior of reed valves during suction and discharge is very important in predicting compressor performance and valve fatigue fracture. For an accurate dynamic analysis of reed valves, mass flow rate and effective force area should be accurately modeled. In this study, mass flow rate and effective force area models were developed based on CFD analysis results using the well-known commercial software ANSYS Fluent. CFD analyses were carried out for various values of port radius, valve radius, valve lift, and pressure difference. The mass flow rate and pressure force on valve were obtained from the analysis. Then, effective flow and force area models were proposed and the model coefficients were determined using the CFD results. The average prediction error of the effective flow area and the effective force area were 1.90% and 2.9%, respectively. It was shown that the effective flow area is dependent only on the port radii and valve lift; it is not dependent on the valve radii. The proposed effective force area model can accurately describe the decrease and increase in pressure force with valve lift.

Keywords: reciprocating compressor; reed valve; flow analysis; effective force area; effective flow area (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: 2023
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