Explain about the importance of optimal Pressure settings of a compressed air network

Explain about the importance of optimal Pressure settings of a compressed air network 
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The power consumed by a compressor depends on its operating pressure and rated capacity. They should not be operated above their optimum operating pressure as this not only wastes energy, but also leads to excessive wear, leading to further energy wastage. The volumetric efficiency is also less at higher delivery pressure. The possibility of down setting the delivery pressure should be explored by careful study of pressure requirements of various equipment and pressure drop between generation point and utilization point. The pressure switches must be adjusted such that the compressor cut-in and cuts-off at optimum levels. 
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