A boiler with an efficiency
1) A boiler with an efficiency of 90% produces 50 tons of steam in one hour with a pressure of 80 bar and
the temperature 440 0C.
What fuel effect does the boiler need to meet the steam demand?
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Fuel is burned in a boiler to produce saturated steam at 10.0 bar absolute pressure from...
Fuel is burned in a boiler to produce saturated steam at 10.0 bar absolute pressure from saturated liquid water at 10.0 bar absolute pressure. This H20 flows through tubes that run through the boiler, Energy released by combustion is transferred as heat through the walls of the tubes to convert the liquid water to steam at 10.0 bar. The fuel consists of 37 mol% ethane and 63 mol% acetylene, and is fed in the vapor phase at 50 °C and...
Thermo Final Exam open book open notes 2hrs 1. (10pts) A power plant can be described by an ideal Rankine cycle without any irreversibility's. he boiler produces superheated steam at a pressu...
Thermo Final Exam open book open notes 2hrs 1. (10pts) A power plant can be described by an ideal Rankine cycle without any irreversibility's. he boiler produces superheated steam at a pressure of 200 bars and temperature of 600c (1). The steam expands adiabatically (and isentropicly) thru a turbine exiting as a saturated vapor/liquid mixture at pressure of 0.1bar (2). The mixture passes thru a condenser (P-0.1bar) until it is all saturated liquid (3). It is then pumped adiabatically to...
An industrial boiler produces 68,000 kg/hr of saturated steam at 4.5 MPa using residual fuel oil...
An industrial boiler produces 68,000 kg/hr of saturated steam at
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storage tank. There is no air preheater but the oil is preheated to
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pressure drop across the air ducts and wind box. An economizer
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you can assume all data Nr 7- FINAL TEST 31 may 2019 1. Enhanced geothermal system. Please calculate amount of water...
you can assume all data
Nr 7- FINAL TEST 31 may 2019 1. Enhanced geothermal system. Please calculate amount of water steam at pressure Sbar(a), if saturated water 95 ton per hour throttled from 20 bar to 5 bar(a). 2. District heating boiler house with power output 10 MW consuming wood chips with moisture 40% decide to install flue gas condenser. If flue gas temperature will be 40 C please advice how big will be boiler house power after condenser...
I) Boiler superheater [3 marks) B) A steam boiler fired with oil of calorific value of 42 MJ/kg g...
I) Boiler superheater [3 marks) B) A steam boiler fired with oil of calorific value of 42 MJ/kg generates steam at a rate of 2500 kg/h and 1.5 MPa. The generated steam is further heated in a superheater to a temperature of 300°C. Feed water at 30°c is preheated to 90°C through passage in the economizer. The boiler unit has an efficiency of 78% i) Calculate the fuel/oil consumption rate (in kg/h) ii) Calculate the percentage increase in fuel consumption...
Two boilers are operating steadily from a bunker fuel source with rating of 30°API. The first boiler produces 1500 kg/hr of steam at 1.25 factor of evaporation with an efficiency of 65% and anothe...
Two boilers are operating steadily from a bunker fuel source with rating of 30°API. The first boiler produces 1500 kg/hr of steam at 1.25 factor of evaporation with an efficiency of 65% and another boiler is 70% efficient with steam produced at 1600 kg/hr and fuel consumption 1.3 times of the first boiler. If the bunker fuel has a heating value of 10,826 kCal/kg and the amount of time to completely consume the fuel supply is 260 hours, what is...
Part 2 A steam plant operates according to the Rankine cycle. Its data is: Boiler pressure 40 bar...
Please solve ONLY part B.
Thank you
Part 2 A steam plant operates according to the Rankine cycle. Its data is: Boiler pressure 40 bar Condenser pressure 0.02 bar The steam is dry saturated as it enters the turbine. Calculate the following (10 Marks) (5 Marks) (5 Marks) The cycle efficiency ii The work ratio ili Specific steam consumption In order to increase the average temperature of the heat supplied in the boiler the system from question 4 is now...
You are to analyze a simple steam power plant. At the boiler exit, the pressure is...
You are to analyze a simple steam power plant. At the boiler exit, the pressure is 8 MPa and the temperature is 1000 °C. The turbine isentropic efficiency is 85%. The condenser pressure is 15 kPa and the water is a saturated liquid at the condenser exit. The pump isentropic efficiency is 80%. Answer the following: a) What is the quality at the exit in %, if the turbine is assumed isentropic? b) What is the work output of the...
Please answer Questions e-f-g-h: (a) The boiler of a power plant operates at a maximum temperature...
Please answer Questions e-f-g-h: (a) The boiler of a power plant operates at a maximum temperature of 750oC. The condenser of the power plant draws in cooling water at 20oC. What is the theoretical maximum efficiency of the plant? (b) Now suppose that a real power plant is built to have an efficiency that is 80% of the theoretical efficiency. The power plant needs to generate 1GW (giga-watt) of power. How much energy (per second) needs to be supplied by...
10. A boiler system is being designed for a building expected to require heating for approximately...
10. A boiler system is being designed for a building expected to require heating for approximately 3,500 hours per year. The LDC is indicated below (left). The total annual heating load is about 280,000 kWh. The load will be met by three identical boilers, with each boiler having the following characteristics: • Heating Fuel: natural gas (heat content may be estimated to be = 10.33 kWh/mº). • Burner Type: on/off • Rated Output = 100 kW Rated Efficiency: na= 82%...
Fuel is burned in a boiler to produce saturated steam at 10.0 bar absolute pressure from saturated liquid water at 10.0 bar absolute pressure. This H20 flows through tubes that run through the boiler, Energy released by combustion is transferred as heat through the walls of the tubes to convert the liquid water to steam at 10.0 bar. The fuel consists of 37 mol% ethane and 63 mol% acetylene, and is fed in the vapor phase at 50 °C and...
Thermo Final Exam open book open notes 2hrs 1. (10pts) A power plant can be described by an ideal Rankine cycle without any irreversibility's. he boiler produces superheated steam at a pressure of 200 bars and temperature of 600c (1). The steam expands adiabatically (and isentropicly) thru a turbine exiting as a saturated vapor/liquid mixture at pressure of 0.1bar (2). The mixture passes thru a condenser (P-0.1bar) until it is all saturated liquid (3). It is then pumped adiabatically to...
An industrial boiler produces 68,000 kg/hr of saturated steam at
4.5 MPa using residual fuel oil (No. 6 fuel oil). The ambient air
temperature is 255 K, which is also the temperature of the oil
storage tank. There is no air preheater but the oil is preheated to
373 K. The oil is pressurized to 5 MPa. There is a 50 mm water
pressure drop across the air ducts and wind box. An economizer
heats the feed water to 400...
you can assume all data
Nr 7- FINAL TEST 31 may 2019 1. Enhanced geothermal system. Please calculate amount of water steam at pressure Sbar(a), if saturated water 95 ton per hour throttled from 20 bar to 5 bar(a). 2. District heating boiler house with power output 10 MW consuming wood chips with moisture 40% decide to install flue gas condenser. If flue gas temperature will be 40 C please advice how big will be boiler house power after condenser...
I) Boiler superheater [3 marks) B) A steam boiler fired with oil of calorific value of 42 MJ/kg generates steam at a rate of 2500 kg/h and 1.5 MPa. The generated steam is further heated in a superheater to a temperature of 300°C. Feed water at 30°c is preheated to 90°C through passage in the economizer. The boiler unit has an efficiency of 78% i) Calculate the fuel/oil consumption rate (in kg/h) ii) Calculate the percentage increase in fuel consumption...
Two boilers are operating steadily from a bunker fuel source with rating of 30°API. The first boiler produces 1500 kg/hr of steam at 1.25 factor of evaporation with an efficiency of 65% and another boiler is 70% efficient with steam produced at 1600 kg/hr and fuel consumption 1.3 times of the first boiler. If the bunker fuel has a heating value of 10,826 kCal/kg and the amount of time to completely consume the fuel supply is 260 hours, what is...
Please solve ONLY part B.
Thank you
Part 2 A steam plant operates according to the Rankine cycle. Its data is: Boiler pressure 40 bar Condenser pressure 0.02 bar The steam is dry saturated as it enters the turbine. Calculate the following (10 Marks) (5 Marks) (5 Marks) The cycle efficiency ii The work ratio ili Specific steam consumption In order to increase the average temperature of the heat supplied in the boiler the system from question 4 is now...
10. A boiler system is being designed for a building expected to require heating for approximately 3,500 hours per year. The LDC is indicated below (left). The total annual heating load is about 280,000 kWh. The load will be met by three identical boilers, with each boiler having the following characteristics: • Heating Fuel: natural gas (heat content may be estimated to be = 10.33 kWh/mº). • Burner Type: on/off • Rated Output = 100 kW Rated Efficiency: na= 82%...
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