Which of the
following devices is used for preheating the air before it is supplied to the
boiler?
Injector
Economiser
Super-heater
Steam trap
Economiser
● Economizer
is used for preheating the air before it is supplied to the boiler .
● It is a
device fitted to a boiler which saves energy by using the exhaust gases from
the boiler to preheat the cold water.
Hence, the
correct option is (B).
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