Effects of leakage flow model on the thermodynamic performance of a scroll compressor

다국어 초록 (Multilingual Abstract)

A computer program for thermodynamic performance of a scroll compressor was developed. The thermodynamic model assumes that the compression volumes of the scroll compressor are separated and interact only through leakages between them. The continuity and energy equations are used to calculate the pressure and temperature of the compression volumes. A leakage flow model is used to simulate the mass flow rate through all leakages. In this study, two different leakage models, isentropic and Fanno flow model, were studied to see its effects on the thermodynamic performance of the scroll compressor. The isentropic flow model shows a larger mass flow rate, compared with the Fanno flow model. CFD solutions obtained by using FLUENT show that the Fanno flow model is more accurate. The difference between the two leakages models grows larger as the clearance increases.

목차 (Table of Contents)

• NOMENCLATURE
• INTRODUCTION
• PREDICTION OF THERMODYNAMIC PERFORMANCE
• Leakage flow models
• CFD evaluation
• RESULTS AND DISCUSSION
• CONCLUSIONS
• ACKNOWLEDGEMENTS
• REFERENCES