The _________ may have water circulation either by natural means due to difference in density or by external means.(a) Piping(b) Tubes(c) Furnace(d) BoilerThe question was asked during a job interview.Query is from Function of Boilers topic in portion Steam Generators & Accessories of Energy Engineering

The _________ may have water circulation either by natural means due t

1.	The _________ may have water circulation either by natural means due to difference in density or by external means.(a) Piping(b) Tubes(c) Furnace(d) BoilerThe question was asked during a job interview.Query is from Function of Boilers topic in portion Steam Generators & Accessories of Energy Engineering
Answer» The correct answer is (d) BOILER Best explanation: The boiler may have a water circulation either by NATURAL means due to difference in density or by external means (forced circulation). All modern high pressure boiler PLANTS USE a pump to force the water to circulate through the boiler PLANT. The use of natural circulation is limited to the subcritical boilers.

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