Which of the following nuclear reactors is the most efficient thermodynamically while operating between the same temperature and pressure limits of the reactor ?
Correct answer: D. Boiling water
- A. Molten sodium cooled
- B. CO2 gas cooled
- C. Pressurised water
- D. Boiling water
Explanation
A boiling-water reactor produces steam directly in the reactor, avoiding the separate steam generator and reducing intermediate heat-transfer losses. Therefore, under comparable reactor temperature and pressure limits, its thermodynamic efficiency is generally highest among these choices.
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