Transmission and Consumption of Air Power in Pneumatic System

Shengzhi Chen¹, Chongho Youn², Toshiharu Kagawa², Maolin Cai³

¹Department of Mechano-Micro Engineering, Tokyo Institute of Technology, Kanagawa, Japan.
²Interdisciplinary Graduate School of Science and Engineering, Tokyo Institute of Technology, Kanagawa, Japan.
³School of Automation Science and Electrical Engineering, Beihang University, Beijing, China.

DOI: 10.4236/epe.2014.613042                

Abstract

In recent 20 years, energy saving has been done in many projects. However, in pneumatic system, it is not easy to determine or measure the air power flow because of the compressibility of pneumatic system. In this paper, we used air power meter (APM) to measure the energy consumption of flow in pneumatic cylinder actuator system. Meter-in circuit and meter-out circuit of speed control system are used in this research. The model of cylinder system is based on four equations: state equation of air, energy equation, motion equation and flow equation. The model estimates the pressure change in charge and discharge side of cylinder, and also the displacement and velocity of the piston. Furthermore, energy consumption could theoretically be calculated when the change of air state is regarded as isothermal change. Lastly, some data of these two circuits are shown, and the consumption of energy is discussed.

Keywords

Air Power, Meter-In Circuit, Meter-Out Circuit, Energy Consumption

Conflicts of Interest

The authors declare no conflicts of interest.

References

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