Ceramic recuperators are generally made of_________________?
Correct answer: C. Silicon carbide
- A. Fireclay bricks
- B. Calcium carbide
- C. Silicon carbide
- D. High alumina bricks
Explanation
Silicon carbide is used for ceramic recuperators because it withstands high temperatures, thermal shock and oxidation while retaining good thermal conductivity. Calcium carbide is reactive, and ordinary fireclay is less durable at severe temperatures.
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