Study of torque matching of revolving vane compressor and expander

9th International Conference on Compressors and their Systems

Subiantoro, A.^1 ; Ooi, K.T.^2

Technische Universität München, Campus for Research Excellence and Technological Enterprise (TUM CREATE), CREATE Tower, 1 CREATE Way #10-02, Singapore

138602, Singapore^1

School of Mechanical and Aerospace Engineering, Nanyang Technological University, N3-02c-73, 50 Nanyang Avenue, Singapore

639798, Singapore^2

关键词: Air refrigeration;    Angle difference;    Controlled parameter;    Integrated compressors;    Operating condition;    Optimum configurations;    Pressure component;    Pressure peaks;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/90/1/012037/pdf
DOI  :  10.1088/1757-899X/90/1/012037

来源: IOP

【 摘 要 】

An investigation was carried out to find the most optimum configuration, particularly the torque matching characteristics, of an integrated Revolving Vane compressor- expander. To carry out the study, a mathematical model of the integrated compressor-expander was developed. An open cycle air refrigeration system was adopted. The controlled parameter was the angle shift between the compressor and the expander. The observed parameters were the peak torque requirement and the bearing load. The results show that when properly matched, the peak torque can be reduced by more than 65% while the bearing loads can be reduced by up to 25%, depending on operating conditions. Unfortunately, the optimum angle shifts for peak torque do not always coincide with those for bearing load. When the pressure and inertial components of the torques are comparable or when the inertial component is dominant, the optimum angle shifts for peak torque and bearing load are around 180° and 330°, respectively. When the pressure component is dominant, the optimum angle shift for peak torque is equal to the angle difference between the pressure peak torques of the compressor and the expander while for bearing load is around 150°.