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�������պ����ѧѧ�� 2012, Vol. Issue (3) :405-409    DOI:
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�׵���1, ��Ω�1, ��ï��1, �غ겨2*
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2. �Ϻ�����ѧ ��Դ�붯������ѧԺ, �Ϻ� 200093
Analysis on energy-saving operation of screw compressor under load/unload operating conditions
Kong Dewen1, Lin Weiqin1, Cai Maolin1, Qin Hongbo2*
1. School of Automation Science and Electrical Engineering, Beijing University of Aeronautics and Astronautics, Beijing 100191, China;
2. College of Energy and Power Engineering, University of Shanghai for Science and Technology, Shanghai 200093, China

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Abstract�� Air compressor power consumption was described. Based on analyzing screw air compressor volume flow efficiency under discharge pressure fluctuation conditions, the screw air compressor volume flow formula was obtained, and power consumption mathematic model were established also. Under load/unload operating conditions, to change the unload pressure value in accordance with the space step of 0.01MPa and consider the power consumption affected by current from unload to load, the screw compressor power consumption were simulated by MATLAB. The simulation shows that the existence of the optimal unload pressure value is proved. Power consumption is minimal with using the optimal unload pressure value. Finally, combining the load/unload operating frequency with the optimal unload pressure value, the optimal control method of screw compressor is given.
Keywords�� compression power   volume flow   unload pressure value   optimal control   energy-saving     
Received 2010-12-21;
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�׵���, ��Ω�, ��ï��, �غ겨.�ݸ˿�ѹ����ж�ع����½������з���[J]  �������պ����ѧѧ��, 2012,V(3): 405-409
Kong Dewen, Lin Weiqin, Cai Maolin, Qin Hongbo.Analysis on energy-saving operation of screw compressor under load/unload operating conditions[J]  JOURNAL OF BEIJING UNIVERSITY OF AERONAUTICS AND A, 2012,V(3): 405-409
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