HVAC · Practice-Exam-2 · Problem 23PDFSolution in PDF ↓
HVAC · Practice-Exam-2 · Problem 23
Problem & Solution
Video Synthesis
Problem: 300 PSIA superheated steam enters an isentropic turbine and exits at 170 degrees with 10% moisture content.
Key step: And since the expansion in this turbine is ice and traffic, we can set the entropy at state 2 equal to the entropy at state 1.
Watch out: But we don't know exactly what the temperature is or anything else specific about it.
Result: So search properties of super heated steam, organized by pressure 300 psi A, and just go down to the line that's closest to having an entropy of 1.671...
✅ Answer: B
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