22-Mec-B3 Energy Conversion and Power Generation, December 2019: worked solutions

Paper format. National Examinations, December 2019 — 16-Mec-B3 Energy Conversion and Power Generation. Three hours, closed book. Section A is calculative (Questions 1–5) and Section B descriptive (Questions 6–8); candidates answer four from Section A and two from Section B, six questions of ten marks each for a total of sixty. Reference data are bound in as pages 11–16 and reference formulae and constants as pages 17–20, with steam tables from Thermodynamics and Heat Power supplied. All eight questions are solved here, because the set is a study resource rather than a sitting.

Reference texts.

Granet & Bluestein, Thermodynamics and Heat Power, 6th ed. — steam tables, vapour cycles, gas cycles (the tables bound into this paper).
El-Wakil, Powerplant Technology — heat balance diagrams, condensers, gas-turbine and combined plant, energy storage, environmental impact.
Lamarsh & Baratta, Introduction to Nuclear Engineering, 4th ed. — fission rate, cross-sections, core heat generation and removal.
Çengel & Boles, Thermodynamics: An Engineering Approach, 9th ed. — Rankine and regenerative Brayton cycles, isentropic efficiencies.
Çengel, Heat and Mass Transfer, 6th ed. — heat-exchanger rating and off-design temperature profiles.

Check: steam and water properties below are taken from IAPWS-95 (the formulation the bound Granet & Bluestein tables tabulate); readings agree with those tables to better than 0.1 %, which is well inside the rounding the paper itself applies.

22-Mec-B3 Energy Conversion and Power Generation: December 2019