The following data was obtained in a boiler trial Calculate (a) Boiler efficiency (b) Equivalent evaporation from and at (100 circ mathrm C ) Use the following table Feed water used Feed water temperature Steam pressure 680 kg h 20C 15 bar Steam temperature Coal used Calorific value of coal 300C 95 kg h Cps 2 1 kJ kg K for superheated steam Cpw 4 187 kJ kg K for water 26,500 kJ kg

Question: The following data was obtained in a boiler trial : Calculate : (a) Boiler efficiency (b) Equivalent evaporation from and at (100^{circ} mathrm{C}). Use the

The following data was obtained in a boiler trial :

Feed water used Feed water temperature Steam pressure 680 kg/h = 20C

Calculate :

(a) Boiler efficiency

(b) Equivalent evaporation from and at \(100^{\circ} \mathrm{C}\). Use the following table :

= 15 bar Steam temperature Coal used Calorific value of coal =

Feed water used Feed water temperature Steam pressure 680 kg/h = 20C = 15 bar Steam temperature Coal used Calorific value of coal = 300C = 95 kg/h Cps = 2.1 kJ/kg.K for superheated steam Cpw=4.187 kJ/kg.K for water. = 26,500 kJ/kg.

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