Answer to Question #246489 in Mechanical Engineering for Asas

Question #246489

A boiler consumes 16,800 pounds of feul/hr when producing 210,000

lb of steam per hour at 620 psia and 800 deg F from feed water at

650 psia and 800F from feed water at 650 psia and 300F. The

heating value of fuel is 18,500 Btu/lb and the furnace volume is 1250

ft. Calculate: a) boiler capacity in mb/hr ; b) factor of evaporation ; c) equivalent evaporation ; d) furnace heat-release rate in Btu/hr-ft^3 ; e) boiler efficiency


1
Expert's answer
2021-10-05T14:45:01-0400

fuel consumption rate = 16,800 lb/hr

mass of steam produced = 210,000 lb/hr


conditions of steam;

pressure = 620 psia

temperature = 800 °F

conditions of water initally;

pressure = 650 psia

temperature = 300°F


heating value of fuel = 18,500 Btu/lb

furnace volume = 1250ft³


boiler capacity = heating value of fuel × fuel consumption rate

boiler capacity = = =

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