HVAC · Practice-Exam-2 · Problem 17
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HVAC · Practice-Exam-2 · Problem 17
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Problem: A refrigeration cycle using R123 operates between 30 PSIA and 125 PSIA with no sub cooling and isynthopic expansion.
Key step: And then it says the expansion is isentopic, which is very typical that we would have a constant enthalpy expansion process from 3 to 4.
Watch out: And I'm not going to bring that chart up on the screen here.
Result: And that gives us a quality of 0.378.
✅ Answer: D
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