The required number of pounds of steam...

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Question 1 of 205eccefa0bacbc34ba4d46c6d

The required number of pounds of steam generated per hour to develop contract shaft horsepower and maintain the specified pressures and temperatures in the plant, when divided by the number of installed boilers, will give the __________.

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🔍 Key Concepts

• Boiler steaming capacity and what it means in terms of pounds of steam per hour • Difference between capacity (what a boiler can produce) and efficiency (how well it converts fuel to steam) • Relationship between total plant steam demand at contract shaft horsepower and the number of boilers sharing that load

💭 Think About

• Ask yourself: if you know how many pounds of steam per hour the entire plant needs at contract shaft horsepower, and you divide that evenly by the number of boilers, what characteristic of each boiler are you really describing? • Think about whether the question is asking how "good" the boiler is (performance per unit fuel) or how "big" its output is (maximum steaming rate at the specified conditions). • Consider how operators and designers would size or rate a boiler: is it usually expressed in efficiency percentage, or in maximum steaming rate (lb/hr) at a given pressure and temperature?

✅ Before You Answer

• Verify whether efficiency is normally expressed as a percentage, not in pounds of steam per hour. • Confirm that capacity of a boiler is typically given as a steaming rate (e.g., lb/hr of steam) at a certain pressure/temperature. • Check which options refer to a measurable load/output rating of the boiler rather than how effectively it uses fuel.

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