Discussion
A thermal oxidiser must hold gas for \( 0.75 \) s at \( 800 \) degrees. Treating \( 12 \) m\(^3\)/s at that temperature, the chamber volume required is
Answer: C
Volume is flow times residence time, \( 12 \times 0.75 = 9.0 \) cubic metres. The flow must be evaluated at the operating temperature, since a gas expands by roughly a factor of three between ambient and eight hundred degrees.
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