What is needed to be increased to increase the heat transfer rate in the boiler?(a) Gas velocities(b) Fuel input(c) Water velocities(d) Air supplyThe question was posed to me during an internship interview.I'm obligated to ask this question of Function of Boilers topic in division Steam Generators & Accessories of Energy Engineering

What is needed to be increased to increase the heat transfer rate in t

1.	What is needed to be increased to increase the heat transfer rate in the boiler?(a) Gas velocities(b) Fuel input(c) Water velocities(d) Air supplyThe question was posed to me during an internship interview.I'm obligated to ask this question of Function of Boilers topic in division Steam Generators & Accessories of Energy Engineering
Answer» CORRECT answer is (c) Water velocities For explanation: Water velocity is REQUIRED to be increased rather than gas velocities to increase the rate of heat transfer rate in the BOILER, because a considerable increase in pressure is more easily produced with water than with gas. Hence, for a given OUTPUT in boiler, smaller diameter tube MAY be used.

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