Analysis on energy-saving operation of screw compressor under load/unload operating conditions
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摘要: 介绍了螺杆空压机的消耗功率,分析了空压机排气压力对其容积效率的影响,得到了空压机容积流量的计算方法,建立了螺杆空压机的运行能耗模型.在加卸载运行工况下,利用MATLAB对其运行过程、运行能耗进行仿真,通过仿真证明了存在最优的卸载压力线,使其运行能耗最小化.最后结合螺杆空压机加卸载运行频率和最优卸载压力线,给出了其在加卸载运行工况下最优控制方案.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.
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Key words:
- compression power /
- volume flow /
- unload pressure value /
- optimal control /
- energy-saving
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[1] 蔡茂林.压缩空气系统的能耗现状及节能潜力[J].中国设备工程,2009(7):42-44 Cai Maolin.Energy consumption status and energy saving potential of pneumatic system[J].China Plant Engineering,2009(7):42-44(in Chinese) [2] Hasmandova M.Compressed air systems:auditing and replacing air compressors[J].Filtration&Separation,2008,45(9):41-43 [3] Schmidt C,Kissock K.Modeling and simulation of air compressor energy use //Preceeding-2005 ACEEE Summer Study on Energy in Industry:Cutting the High Cost of Energy.United States,Washington:American Council for an Energy-Efficient Economy,2005:1131-1142 [4] Akbaba M.Energy conservation by using energy efficient electric motors[J].Applied Energy,1999,64(1-4):149-158 [5] 松隈正樹.空気圧縮機[M].东京:财団法人/省エネルギーヤンター,2005:42-46 Matsukuma Masaki.Air compressor[M].Tokyo:The Energy Conservation Center,2005:42-46 [6] 邢子文.螺杆压缩机——理论、设计及应用[M].北京:机械工业出版社,2000:89-90 Xing Ziwen.Screw compressor-theory,design and application[M].Beijing:China Machine Press,2000:89-90(in Chinese) [7] 许小龙.空压机变频调速节能技术改造[J].机床电器,2007(1):43-46 Xu Xiaolong.The energy conservation technique transformation of compressor frequency control[J].Machine Tool Electric Apparatus,2007(1):43-46(in Chinese) [8] Atlas Copco Airpower NV.Atlas copco compressed air manual 7th edition[G].2010,8:23 [9] 蔡茂林,香川利春.气动系统的能量消耗评价体系及能量损失分析[J].机械工程学报,2007,43(9):69-74 Cai Maolin,KAGAWA Toshiharu.Energy consumption assessment and energy loss analysis in pneumatic system[J].Chinese Journal of Mechanical Engineering,2007,43(9):69-74(in Chinese) [10] Van Ormer H.Optimize your plant-s compressed air system[J].Chemical Engineering Progress,1995,91(2):37-42 -
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