Comprag RDX12 - Conversion Table of Performance for Different Operating Conditions

12
Version 2.2
The compressed air cools to dew-point +3°С by means of heat exchange. The water vapour
present in the compressed air is condensed. The condensate formed is extracted by the
condensate drain valve (9). Hot refrigerant enters the suction line of the compressor (1)
from the evaporator (2) and the cycle repeats itself. In order to stabilize the pressure of the
refrigerant in the condenser (3), a pressure relay (8) is installed, which controls function of
the fan (4). If the pressure in the evaporator (2) drops (insufcient quantity of compressed
air enters the dryer, no-load operation) a hot gas bypass valve is activated and it allows
pressure in the evaporator to drop lower than the dened level.
2.4 Conversion table of performance for different
operating conditions
RDX refrigerated dryers are designed in conformity with ISO 7183 under standard operat-
ing conditions: working pressure 7 bar, ambient temperature +25°C, compressed air inlet
temperature +35°C.
Any deviation from standard conditions requires dryer size adjustments.
Use Correction Factor tables to help determine dryer size.
Maximum working pres-
sure, MPa
0 0,1 0,2 0,4 0,6 0,7 0,8 1,0 1,2 1,4 1,6
F1 X X X 1,25 1,06 1,00 0,96 0,90 0,86 0,82 0,8
Maximum inlet temperature of compressed air,
0
C +30 +35 +40 +45 +50 +55
F2 0,85 1,00 1,18 1,39 1,67 2,00
Ambient Temperature, °C +20 +25 +30 +35 +40 +45
F3 0,92 1,00 1,07 1,14 1,22 1,3
Capacity = Capacity at standard operating conditions x F1 x F2 x F3