Cooling A Sewage Pump

Overheating pump at sewage facility

Overheating motor at Kuwaiti sewage facility

One of the great things about being an EXAIR Application Engineer is the variety of applications that find their way through our proverbial doors.  In a given day we could be anything from solve static problems for a garment manufacturer to prevent an overheating condition at a pumping station.

The latter of the applications mentioned above has played out over the last few days with an end user of our products in Kuwait.  This end user operates a sewage pumping station which uses 10 dry well pumps located 30m (99 ft.) below ground.  The rooms which house the pumps are not cooled, and as a result, the bearings within the pumps tend to overheat and take considerable time to cool.

What this application needed was an efficient and effective way to cool these motors (and their bearings) from a measured high of 90°C (194°F) to ambient temperatures.  And, when it comes to a convective heat transfer such as that found when cooling by passing an airflow over a material, the greater the volume of air, the greater the cooling.

Enter the Super Air Amplifier.  An air amplifier will multiply the volume of air fed through the unit.  For example, if we supply a 4” Super Air Amplifier with 80 PSIG line pressure, it will consume 29.2 SCFM and move a volume of 730 SCFM at the outlet of the unit.  At a distance of 6” away, the air volume will further amplify to 2,190 SCFM.

What this means for this application, is that we can use a small amount of compressed air to generate HUGE air flows over these motors, bringing down their temperatures and preventing the overheating condition.

If you have a similar application or are in need of a potential EXAIR solution, contact an EXAIR Application Engineer.

Lee Evans
Application Engineer
LeeEvans@EXAIR.com
@EXAIR_LE

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