空気圧駆動システムにおけるエネルギー消費とその評価

抄録

This paper proposes a method to assess consumed energy of compressed air from the available energy of air in pneumatic actuating systems. This will make it possible to investigate the total efficiency of pneumatic actuating systems. The available energy is defined as the maximum work that can be extracted from air as it undergoes a reversible process from a given state to the atmospheric state on surrounding atmosphere. It is clarified that the available energy of air consists of two parts : power transmission energy and expansive energy, which represent pushing work from the upstream and work ability by expansion, respectively. Lastly, the efficiencies of compressors and air cylinders are discussed in terms of available energy, and an experiment on the consumption of available energy in a cylinder actuating system is introduced.