Brochure

8
What size PNEUDRI do I require?
DryerSelection
To correctly select a dryer model, the ow rate of the dryer must be adjusted for the minimum operating pressure and
maximum operational temperature of the system. If the dewpoint required is different to the standard dewpoint of the
dryer then the ow rate must also be adjusted for the required outlet dewpoint.
PNEUDRI MXLE
0
FLOW m
3
/hr
PNEUDRI MiDAS
PNEUDRI MIDIplus
PNEUDRI MX
500 1000 1500 2000 2500 3000
THESE MODELS CAN BE MULTI BANKED
SelectionExample
Selecting a dryer for a compressor producing at full load 1500 m³/hr at 8.3 bar g with 38°C air inlet temperature and a pressure
dewpoint of -40°C.
Step 1
Select the correction factor for maximum inlet temperature from
the CFT table Correction Factor for 38°C (round up to 40°C) = 1.04
Step 2
Select the correction factor for minimum operating pressure from the
CFP table Correction Factor for 8.3 bar g (round down to 8 bar g) = 0.89
Step 3
Select the correction factor for the required dewpoint from the CFD table
Correction Factor for -40°C PDP = 1.00
Step 4
Calculate the minimum drying capacity
Minimum drying capacity = Compressed air flow rate x CFT x CFP x CFD
Minimum drying capacity = 1500 m³/hr x 1.04 x 0.89 x 1.00 = 1388 m³/hr
Model selected = MX106
Step 5
Which controller is required?
SMART controller is required therefore model selected = MXS106
Step 6
Is DDS Energy Management System required?
DDS Energy Management system is required therefore model selected = MXS106DS
If the minimum drying capacity exceeds the maximum values of the models shown within the tables,
please contact Parker domnick hunter for advice regarding larger multi-banked dryers.
TemperatureCorrectionFactorCFT
MaximumInlet
Temperature
°C 40
°F 104
CFT 1.04
PressureCorrectionFactorCFP
Minimum
InletPressure
barg 8
psig 116
CFP 0.89
DewpointCorrectionFactorCFD
Required
Dewpoint
PDP°C -40
PDP°F -40
CFD 1.00