Cummins Aftercoolers
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The compressed air discharged from an air compressor is hot (fig. AC1-1). Compressed air at these temperatures contains large quantities of water in vapor form. As the compressed air cools this water vapor condenses into a liquid form. As an example if an aftercooler is not used, a 200 scfm compressor operating at 100 psig introduces 45 gallons of water into the compressed air system each day. Learn more about the aftercoolers eCompressedair.com offers by viewing our product selection of aftercoolers. Compressor Outlet TemperaturesCompressor Outlet Temperatures. Compressor Outlet Temperatures Additionally by reducing the air temperature condensate forms. Most air aftercoolers are sized to cool the air to within 5°F to 20°F (2.7°C to 11°C) of ambient air temperature. As the compressed air cools up to 75% of the water vapor present condenses to a liquid and can be removed from the system. A moisture separator installed at the discharge of the aftercooler removes most of the liquid moisture and solids from the compressed air. Utilizing centrifugal force, moisture and solids collect at the bottom of the moisture separator. An automatic drain should be used to remove the moisture and solids. Functions of compressed air aftercoolers Cool air discharged from air compressors via the heat exchanger Reduce risk of fire (Hot compressed air pipes can be a source of ignition) Reduce compressed air moisture level Increase system capacity Protect downstream equipment from excessive heat Coolers are usually sized with a CTD (Cold Temperature Difference) of 5°F, 10°F, 15°F or 20°F (2.7°C, 5.5°C, 8.3°C, or 11°C). This means that the compressed air temperature at the outlet of the aftercooler will be equal to the cooling medium temperature plus the CTD when sized at the specified inlet air temperature and flow.
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Air Cooled Aftercooler, Water Cooled Aftercooler - Can cool high temperature compressed air from compressors. Cost effective and easy maintenance.
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Aftercoolers which are available in water cooledair cooled designs, major chunk of moisture is removed there by reducing load on dryers.