Power required in case of forced draught as compared to induced draught (for the same draught produced) is___________________?
Correct answer: B. Less
- A. Same
- B. Less
- C. More
- D. Either more or less; depends on the flue gas density
Explanation
For the same mass flow and draught pressure, forced-draught equipment handles cooler, denser air and therefore a smaller volume. Its fan power is consequently less than that of an induced-draught fan handling hot, expanded flue gas.
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