Answer to Question #201590 in Mechanical Engineering for Christian Jay T. G

Question #201590

in a steam power plant, 2.5 kg of coal is consumed per second and air required for combustion is 16 kg per kg coal fired. Air enters at 27°C and the barometric pressure is 98.5 kPa. The flue gases enter the chimney at a temperature of 300°C and leave at a temperature of 220°C. The ash loss is expected to be 12 % of the consumed fuel. A theoretical dra


1
Expert's answer
2021-06-11T22:58:11-0400

If we were to calculate the height of the chimney

The specific volume of 1 kg of flue gas at NTP

PV=RT

The specific volume of m kg of air per kg fuel at temperature T

Density of air

Mass of the gas will be m+1 per kg of fuel burnt and the temperature T.

Density of flue gas

So,


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