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COMPRESSED AIR DRYERS » Kolosal Refrigerated
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Kolosal 100- 20,000 cfm (Shell & Tube)

For every 11°C (20°F ) drop in temperature of the compressed air the moisture holding capacity of the air reduces by 50%. Refrigerated air dryers work by using a refrigerant to cool the air to 3°C reducing the moisture holding capacity of the air. Cooling the compressed air causes the moisture to condense. The cooled air along with the moisture is then passed through a moisture separator in order to remove the condensed moisture.

Kolosal refrigerated dryers employs the well established Shell and tube heat exchanging technology. Material of construction includes a mild steel shell and copper tubes. For refrigerated air dryers, the temperature differential between the air and the refrigerant causes absorption of heat energy from the air; hence, reducing the temperature of the compressed air. This causes the moisture to condense.

Features of Kolosal Brand

Caters to High Ranges (10 cfm and above)
- Manufacturability Range of 100 cfm to 20,000 cfm.
- Largest existing Kolosal refrigerated dryer made by Exal has a flow-rate of 12,000 cfm.
- Pressure - 1 Barg - 70 Barg
Can be designed for low and high working pressures
- Exal can manufacture Kolosal refrigerated dryers with working pressures as low as 1 barg.
0-100% capacity control
- All Kolosal refrigerated dryers can be designed to work from 0 to 100% load.
Low Pressure Drops
- Exal has made many Kolosal refrigerated dryers with 1 psi pressure drop.
Constant pressure dew point 3 °C
- Kolosal refrigerated dryers provide a constant pressure dew point +3°C.
- Dew point temperature is measured before moisture separator in the Air line/ circuit.
Maximum Energy savings
- All heat exchangers are designed to correct capacity. This minimizes loss of pressure.
Long Life
- High efficiency SS 304 strainer at inlet to prevent rust from carrying forward. (1000 cfm and above)
- Galvanized interiors (1000 cfm and above) – Pre-cooler/ re-heater, Evaporator, Moisture Separator, Tie-rod and Baffle.
- Wet air flow through tube-side (Pre-cooler/ Re-heater). Prevents rusting of shell.
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