In a Boiler Furnace HFO (Heavy Fuel Oil) is burned in the presents of air to...
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In a Boiler Furnace HFO (Heavy Fuel Oil) is burned in the presents of air to produce heat. The combustion produces 815 KW of thermal energy of which 65% is used to heat water in the boiler tubes that pass through the furnace. Water enters the boiler tubes as liquid at 20°C and leaves the tubes as saturated steam at 20 bar absolute. The combustion products are sent out of the Boiler Furnace as exhaust emissions at 650°C.As the person assigned to this Unit Operation, you are called upon to do the following: a) Calculate the rate, in kg/h, at which steam is produced [14 marks] b) Use steam tables to estimate the volumetric flow rate of the steam produced. [4 marks] c) Recalculate the volumetric flow rate of the steam produced not using steam tables, but assuming ideal gas behavior of the steam. [10 marks] d) Compare the answers from part b) and part c) to explain which one would be more accurate. [2 marks] e) Explain what happened to the other 35% of thermal energy that was not used to heat the water in the tubes? [3 marks] In a Boiler Furnace HFO (Heavy Fuel Oil) is burned in the presents of air to produce heat. The combustion produces 815 KW of thermal energy of which 65% is used to heat water in the boiler tubes that pass through the furnace. Water enters the boiler tubes as liquid at 20°C and leaves the tubes as saturated steam at 20 bar absolute. The combustion products are sent out of the Boiler Furnace as exhaust emissions at 650°C.As the person assigned to this Unit Operation, you are called upon to do the following: a) Calculate the rate, in kg/h, at which steam is produced [14 marks] b) Use steam tables to estimate the volumetric flow rate of the steam produced. [4 marks] c) Recalculate the volumetric flow rate of the steam produced not using steam tables, but assuming ideal gas behavior of the steam. [10 marks] d) Compare the answers from part b) and part c) to explain which one would be more accurate. [2 marks] e) Explain what happened to the other 35% of thermal energy that was not used to heat the water in the tubes? [3 marks]
Expert Answer:
Answer rating: 100% (QA)
a The rate of steam production can be calculated using the following equation rate of steam producti... View the full answer
Related Book For
Thermodynamics An Engineering Approach
ISBN: 978-0073398174
8th edition
Authors: Yunus A. Cengel, Michael A. Boles
Posted Date:
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