| <BR> | The through-flow rate of a dryer refers to the intake rate of air during compression by a compressor according to PN2 CPTC2, ISO 1 2 1 7 (DIN 1945 Part 1).
- Intake pressure p = 0 barop
 1 barabs
- Intake temperature T0 = 293 K
 20°C
Drying equipment is designed according to DIN ISO 7183 for certain operating conditions. The performance data given for the equipment is only correct under these conditions:
- Operating pressure p = 7barop
 8barabs
- Ambient temperature tA = 298K
 25°C
- Entry temperature tEN = 308K
 35°C
If a dryer is used under different operating conditions, appropriate conversion factors must be taken into account. These factors differ in the various drying processes.
Example for the layout of a refrigeration compressed air dryer
Conversion factors for operating conditions and ambient temperature:
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| <BR> | A BOGE refrigeration compressed air dryer, model D8, has a through-flow rate R of 45 m 3 /h. It is operated at an average ambient temperature of t A = 40° C and an operating pressure of p = 10 bar op .<BR> |
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R = 45 m³/h
p = 10 barop Þ f = 1,09
tA = 40°C Þ t = 0,79
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RAD = Adjusted through-flow rate [m³/h]
R = Through-flow rate [m³/h]
f = Conversion factor for p=10 barop
t = Conversion factor for tA=40°C
With changed operating conditions the dryer has through-flow rate of 38,75 m³/h. |