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Training course on energy efficiency in SMEs - engine-sme.eu

Training course on energy efficiency in SMEs - engine-sme.eu

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EXAMPLE – Calculat<strong>in</strong>g the<br />

effective power<br />

unit value remark<br />

V [m 3 ] 6 volume of the storage c<strong>on</strong>ta<strong>in</strong>er<br />

t [sec] 36 time for fill<strong>in</strong>g up the storage c<strong>on</strong>ta<strong>in</strong>er to a<br />

predeterm<strong>in</strong>ed level<br />

pe2 [bar] 11 pressure of the storage c<strong>on</strong>ta<strong>in</strong>er at maximum pressure<br />

pe1 [bar] 9 pressure of the storage c<strong>on</strong>ta<strong>in</strong>er at m<strong>in</strong>imum pressure<br />

pa [bar] 1 Pressure <strong>in</strong> the sucti<strong>on</strong> pipe<br />

Q1 [m 3 /h] 1200 average producti<strong>on</strong> of compressed air<br />

Q2 [m 3 /h] 1300 average producti<strong>on</strong> of compressed air (technical<br />

specificati<strong>on</strong> of the manufacturer)<br />

www.eng<strong>in</strong>e-<strong>sme</strong>.<strong>eu</strong><br />

= [%] 92.3 > 95 % for small plant<br />

> 90-95 % for larger plant

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