Question 284Steam Plants - Assistant Engineer
70% to passLarge steam drums are not required in the design of a coil-type auxiliary water-tube boiler because _______________.
Asteam and water are separated in the accumulator (flash chamber)
Bthe heat of combustion is sufficient to remove all moisture from the steam
Cthe volume of steam is small at low pressures
Dautomatic burner cycling controls steam volume and quality
AI Explanation
The correct answer is A) steam and water are separated in the accumulator (flash chamber). In a coil-type auxiliary water-tube boiler, the steam and water are separated in the accumulator (also called a flash chamber). This separation occurs as the steam-water mixture flashes into steam, leaving the water behind. This process eliminates the need for a large steam drum, as the steam is generated directly from the heated water coils without the requirement for a large water storage volume. The other answer choices are incorrect because they do not accurately describe the design and operation of a coil-type auxiliary water-tube boiler.
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