Page 55 - Pneumatic ebook (2)_draft 13 sept 2021

Continuous Cooler
a. Air cooled
This type of aftercooler uses air to cool down the
compressed air. This air cooled aftercooer consists
nest of tubes as shown in figure (a). Hot air enters the
aftercooler through inlet and passes by the nest of
tubes. The air will be cooled down by means of cold air
produced by fan assembled in the aftercooler.
a. Principle of an air cooled aftercooler
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a. Air cooled cooler
b. Water cooled cooler
INTRODUCTION TO PNEUMATIC SYSTEM
b. Water cooled
1. This type of aftercooler uses water to cool down the hot air
after compression. The arrangement of the air inlet, air outlet,
water inlet and water outlet are as shown in the figure (b).
2. The flow of water and air should be opposite direction through
the cooler. Temperature of the air discharged should be
approximately 10°C above the temperature of the cooling
water. The accumulated condensation is removed through an
automatic drain, attached to aftercooler. Usually, aftercoolers
equipped with a safety valve, pressure gauge, and
thermometer pockets for air and water.
b. Principle of a water cooled aftercooler
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