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Fig. 8.7: BOGE piston compressor, type RM 3650-213 | Piston compressors are designed with reserves of approx. 40 %. Reserves are included from experience, in order to have a contingency for possible extensions to the system and to use the compressor intermittently. Intermittent operation means less wear.
The ideal usage rate UR for a piston compressor is around 60 %. BOGE piston compressors are designed for 100 % UR = continuous operation. When calculating the ideal compressor size this means: the required FAD LB must be divided by 0.6 in order to obtain the minimum FAD  min of the piston compressor.
The choice is:
Piston compressor Type RM 4150-213
Max. pressure pmax : 10 bar
FAD  : 3350 l/min
Motor rating : 30 kW Þ Al=20 |