A water tube boiler evaporated 5.05 kg of water per second from a feed water temperature...

 

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A water tube boiler evaporated 5.05 kg of water per second from a feed water temperature of 104.44 °C to steam at 1241.1 kPa and quality of 0.97; weight of coal fuel per second 0.57 kg; higher heating value of coal as fired, 11,800 Btu/lb. Determine the rate of absorption in kJ/s, the boiler horsepower, and the efficiency of steam generating units. Answer: A A. 11,558 kJ/kg, 1,178 Bo. Hp, 73.87% B. 12,345 kJ/kg, 1,234 Bo. Hp, 84.35% C. 14,567 kJ/kg, 1,045 Bo. Hp, 67.45% D. 10,275 kJ/kg, 1,475B0. Hp, 83.25% A water tube boiler evaporated 5.05 kg of water per second from a feed water temperature of 104.44 °C to steam at 1241.1 kPa and quality of 0.97; weight of coal fuel per second 0.57 kg; higher heating value of coal as fired, 11,800 Btu/lb. Determine the rate of absorption in kJ/s, the boiler horsepower, and the efficiency of steam generating units. Answer: A A. 11,558 kJ/kg, 1,178 Bo. Hp, 73.87% B. 12,345 kJ/kg, 1,234 Bo. Hp, 84.35% C. 14,567 kJ/kg, 1,045 Bo. Hp, 67.45% D. 10,275 kJ/kg, 1,475B0. Hp, 83.25%

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