Question: The data obtained during a boiler trial is given below: Calculate (a) equivalent evaporation, (b) thermal efficiency of plant, and (c) percentage of heat energy

The data obtained during a boiler trial is given below:

Duration Steam generated Steam pressure Steam temperature Temperature of water entering economiser

Calculate

(a) equivalent evaporation,

(b) thermal efficiency of plant, and

(c) percentage of heat energy of fuel energy utilised by the economiser.

Duration Steam generated Steam pressure Steam temperature Temperature of water entering economiser Temperature of water leaving economiser Oil burnt C.V. of oil 1 hour = 35,500 kg = 12 bar = 250C = 17C = 77C = 3460 kg = 39,500 kJ/kg

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