Purpose of using economizer in boiler - Thermodynamics

Q.  What is the purpose of using economizer in the boiler?
- Published on 19 Aug 15

a. to heat feedwater by utilizing heat from exhaust gases
b. to heat feedwater by utilizing some heat from superheated steam
c. to superheat steam
d. none of the above

ANSWER: to heat feedwater by utilizing heat from exhaust gases

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