Dryers

How much oxygen is there in the air around us?

• 20.95%

• 101%

• 78.08%

• Depends on the air pressure.

100% humid air at 10°C and 7 bar pressure has a pressure dewpoint of:

• -10°C

• 10°C

• 9.53g/m³

• -40°C

We measure PDP of -40°C at 7 bar pressure, the ADP of this air is then

• the same

• higher

• lower

The expected dewpoint from a FD/ID dryer is

• -12°C

• 0°C

• 10°C

• 3°C

Air comming out of compressor has a relative humidity of

• 0%

• 25%

• 50%

• 100%

Desiccant used in a -40°C CD(heatless) dryer is:

• Moleculair seive

• Activated alumina

• carbon moleculair seive

• Silica Gel

Adding a fridge dryer in front of a -70°C CD dryer will

• Lower the dewpoint even further

• Increase the dewpoint

• Have no effect on the dewpoint

• increase the efficiency as a lot of mositure is allready out of the air