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Quotes - Engineering - SalesCompressed Air Aftercoolers
Air leaves a compressor hot - typically 250°F from a two-stage rotary screw and up to 350°F from a single-stage machine - and saturated with water vapour. An aftercooler brings that temperature down before the air reaches the receiver, condensing most of the water so a separator can remove it. Every 1,000 SCFM of air at 100 PSIG carries more than 30 gallons of water a day into the system if it is not cooled first.
IPAC built three aftercooler ranges to do this. The A Series uses a fan and ambient air and needs no water. The 51 Series is a shell and tube unit that cools with plant water to within 15 to 20°F of the water temperature. The 59 Series is the same construction eight inches longer, for a 5 to 10°F approach where drier air is worth the extra surface.
Aftercoolers by Series
Select a series to see every part number in it
At a Glance
| SERIES | COOLING | RANGE | APPROACH | PRESSURE | MODELS |
| A Series | Ambient air, axial fan | 30-2,800 SCFM | 15°F to ambient | 200 PSIG | 15 |
| 51 Series | Water, shell & tube | 38-4,785 SCFM | 15-20°F to water | 200 / 300 PSIG | 15 |
| 59 Series | Water, shell & tube | 37-11,970 SCFM | 5-10°F to water | 200 / 300 PSIG | 19 |
Where They Are Used
What We Need to Quote
A selection comes together quickly once the duty is stated.
- Compressor SCFM and pressure, or the heat load
- Inlet temperature and the cooling water or ambient temperature
- Required outlet temperature
- Design pressure and any code stamp
Replacing an Existing Unit
Where a unit is being replaced, the nameplate does most of the work.
- IPAC or HiROSS model number, exactly as stamped
- National Board number where one is fitted
- Connection sizes and orientation
