Ceramic recuperators (made of SiC) is economical, only when used for preheating combustion air above __________ °C.

Question: Ceramic recuperators (made of SiC) is economical, only when used for preheating combustion air above __________ °C.
[A].

250

[B].

650

[C].

850

[D].

1000

Answer: Option B

Explanation:

No answer description available for this question.