2920 1454 00
15
Instruction book
Ref. Description/recommendation
4 Ventilation: the inlet grids and ventilation fan should
be installed in such a way that any recirculation of
cooling air to the compressor is avoided. The air
velocity to the grids must be limited to 5 m/s. The
maximum allowable pressure drop over the cooling air
ducts depends on the ambient temperature; consult
Atlas Copco. The maximum air temperature at the
compressor intake opening is 40 degrees Celsius
(minimum 0 degrees Celsius).
For alternatives 1 and 3, the required ventilation to limit
the compressor room temperature can be calculated as
follows:
Ref. Description/recommendation
Qv = 1.06 N/dT for GA VSD Workplace
Qv = (1.06 N + 1.3)/dT for GA VSD Workplace
Full-feature
Qv = required ventilation capacity in m
3
/s
N = nominal motor power input of compressor
in kW
dT = temperature increase in compressor room
Fig. 2.2 Installation proposal
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