DG set Back Pressure calculation

Exhaust System Back pressure Calculation Exh.gas flow, m3 /min. Exh.gas temp., °C Pipe diam., inch. Pipe lenght, meter. Number of 45° bends Number of 90° bends Exhaust gas velocity Dissipation losses, exh.outlet

100 200 8 10 1 2

Total pipe exh. back pressure, kPa

6000.00 m³/h 0.75 kg/m³ 203.20 mm 0.81 kPa 0.03 kPa 0.14 kPa 51.39 m/s 0.99 kPa

1.96

DDA - Exhaust Silencer, size inch

20

Silencer back pressure, kPa

0.08

Total exh.system back pressure, kPa For engine model the allowable back pressure is 5kPa.Hence, the total piping of mtr. with --nos. long bend shall work satisfactorily without any change in the performance of engine.

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