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17-Phys-B6 Applied Thermodynamics and Heat Transfer: May 2016

Nivaar worked solution (AI-drafted; not reviewed by a licensed engineer)

  1. Question 1 Stepped-Piston Force Balance; Isothermal Expansion of Saturated Steam
  2. Question 2 Combined Reheat–Regeneration Steam Power Cycle
  3. Question 3 Brayton Cycle with Compressor/Turbine Losses and Pressure Drop
  4. Question 4 Real Freon-12 Vapour-Compression Cycle from Test Data
  5. Question 5 Insulation Thickness for a 95% Heat-Loss Reduction
  6. Question 6 Oil Heated by Hot-Gas Crossflow Over a Tube — Wall-Temperature Check
  7. Question 7 Combined Free Convection and Radiation from a Power Transistor
  8. Question 8 Cross-Flow Tube-Bank Heat Exchanger — Effectiveness–NTU

Start with Question 1 →

Paper format. 98-Phys-B6 Applied Thermodynamics and Heat Transfer, National Examination May 2016 — a three-hour open-book examination; candidates are expected to bring both a thermodynamics text and a heat-transfer text to make use of the property tables and charts. A complete examination is five questions — either three from Part A (Thermodynamics, Q1–Q4) and two from Part B (Heat Transfer, Q5–Q8), or two from Part A and three from Part B — every question carrying equal value; all eight are solved below as a complete study set. Where the exam's own "state your assumptions" licence applies (Part A cold-air-standard properties in Question 3; the rectangular-case geometry read from the printed illustration in Question 7), the assumption is flagged explicitly in a check callout rather than hedged inside the answer.

Reference texts. Y. A. Çengel and M. A. Boles, Thermodynamics: An Engineering Approach, 8th ed. (ideal-gas processes, vapour power cycles, gas-turbine/Brayton cycles, vapour-compression refrigeration); F. P. Incropera and D. P. DeWitt, Fundamentals of Heat and Mass Transfer, 7th ed. (conduction with convective boundaries, internal/external convection correlations, natural convection, radiation exchange, cross-flow heat-exchanger effectiveness–NTU analysis).