HVAC · Practice-Exam-1 · Problem 79
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HVAC · Practice-Exam-1 · Problem 79
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Problem: 25 GPM of water at 300 PSIA and 250 degrees goes through a boiler where it is converted to 500 PSIA steam at a thousand degrees.
Key step: 25 GPM of water at 300 PSIA and 250 degrees goes through a boiler where it is converted to 500 PSIA steam at a thousand degrees.
Watch out: So the only thing we don't know is H1, the enthalpy for the entering condition.
Result: equals m.delta h, or expanding that a bit, we can say, row times Q.delta h.
✅ Answer: C
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