A chimney 30 m high produces a draught of 16 mm of water. The temperature of hot gases inside the chimney is 300 C. Calculate the temperature of outside air if 20 kg of air is supplied for complete combustion of 1 kg of fuel.

A chimney 30 m high produces a draught of 16 mm of water. The temperat

1.	A chimney 30 m high produces a draught of 16 mm of water. The temperature of hot gases inside the chimney is 300 C. Calculate the temperature of outside air if 20 kg of air is supplied for complete combustion of 1 kg of fuel.
A.	30 C
B.	27 C
C.	25 C
D.	20 C
Answer» C. 25 C

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