AVDT — AIR VENT WITH DIAL THERMOMETER
AIRVENT
Removes air and non-condensable gases that quietly destroy heat transfer.
01Application
Removing hot air and other gases from equipment is just as important during operation as at start-up. Carbon dioxide or other non-condensable gases can be generated while equipment is operating normally, due to insufficient treatment of the boiler feed water. Residual air inside equipment can also be heated by the steam to high temperatures and interfere with heat transfer. If air and non-condensable gases are not completely removed, the efficiency of the steam process can be severely impaired. Air venting should therefore be ensured throughout start-up and during regular operation.
02What it does
- Particularly important where equipment configuration causes air build-up, or where the air venting capacity of a steam trap is insufficient — usually during start-up.
- Balanced pressure type air vents are recommended over the bimetal type.
- Should be fitted in collection areas where air will be pushed on start-up.
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