Q537 Steam Plants I U.S.C.G. Merchant Marine Exam Third Assistant Engineer Illustrations: 4 Choose the best answer to the following Multiple Choice Questions: 1. Overheating of the generating tubes will occur when a boiler reaches its end point of _____.

Get A QuoteWhen steam demand from the plant is low, and the boiler is capable of generating more steam than is required, the surplus steam is injected into a mass of water stored under pressure. Over a period of time the stored water content will increase in temperature and pressure until it finally achieves the saturation temperature for the pressure at which the boiler is operating.

Get A QuoteSuperheated steam with a state of 450 o C, 1.8 MPa flows into an adiabatic mixing chamber at a rate of 0.3 kg/s. A second stream of dry, saturated water vapor at 1.8 MPa enters the chamber at a rate of 0.1 kg/s. There is no pressure loss in the system and the

Get A QuoteThe boiler generates steam at 7 MPa, 540 o C at a rate of 9 kg/s, and the condenser pressure is 14 kPa. Steam leaves the process heater as saturated liquid. It is then mixed with the feedwater at the same pressure and this mixture is pumped to the boiler

Get A QuoteMass of coal burnt per m 2 of grate per hour 10417 kg Equivalent evaporation from PHYS 330 at Washington State University Ans. 13. A boiler is capable of generating 8 kg steam per kg of fuel at 400 C. Feed water is supplied at pressure of 30 bar, 40 C and leaves economiser at 150 C …

Get A QuoteA back pressure steam cycle works as follows. The boiler p roduces 8 kg/s of steam at 40 bar and 500 oC. This is expanded to 2 bar with an isentr opic efficiency of 0.88. The pum p is supplied w ith feed water at 0.5 bar and 30 oC and delivers it to the boiler at

Get A Quote2021/2/12 · 11-A 100 TPH coal fired boiler generating 8.5 kg of flue gas (Mfg) per kg of fuel burnt at 150 Deg (Tfg) Calculate the heat loss due to dry flue gas loss. Consider coal GCV 5000 kcal/kg & ambient air temperature 25 Deg C (Ta) Heat loss due to dry flue gas = Mass of

Get A Quote2015/3/17 · Steam, Boiler, and Blowdown Pressure are the same. Combustion Efficiency is the % of fuel energy that is directly added to the feedwater and not otherwise lost or used. Blowdown Rate is the % of incoming feedwater mass flow rate that leaves the boiler as a saturated liquid at boiler pressure.

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Get A QuoteThe boiler generates steam at 7 MPa, 540 o C at a rate of 9 kg/s, and the condenser pressure is 14 kPa. Steam leaves the process heater as saturated liquid. It is then mixed with the feedwater at the same pressure and this mixture is pumped to the boiler

Get A Quote2015/3/17 · Steam, Boiler, and Blowdown Pressure are the same. Combustion Efficiency is the % of fuel energy that is directly added to the feedwater and not otherwise lost or used. Blowdown Rate is the % of incoming feedwater mass flow rate that leaves the boiler as a saturated liquid at boiler pressure.

Get A Quote11. A boiler generates 8 kg of dry saturated steam per kg of fuel oil burned. Fuel oil heating value is 33 000 kJ/kg. Feedwater is supplied at 70 C, and the boiler pressure is 1400 kPa. 21. Five kilograms of water at 100 C is changed to saturated steam having a final

Get A QuoteSteam leaves evaporator with dryness fraction of 0.98 and enters the superheater. Fuel used has calorific value of 29000 kJ/kg. Considering no pressure loss inside the boiler Question: Q6/ A boiler is capable of generating 8 kg steam per kg of fuel at 400 C.

Get A Quote11. A boiler generates 8 kg of dry saturated steam per kg of fuel oil burned. Fuel oil heating value is 33 000 kJ/kg. Feedwater is supplied at 70 C, and the boiler pressure is 1400 kPa. 21. Five kilograms of water at 100 C is changed to saturated steam having a final

Get A QuoteSteam leaves evaporator with dryness fraction of 0.98 and enters the superheater. Fuel used has calorific value of 29000 kJ/kg. Considering no pressure loss inside the boiler Question: Q6/ A boiler is capable of generating 8 kg steam per kg of fuel at 400 C.

Get A Quote2021/2/12 · 11-A 100 TPH coal fired boiler generating 8.5 kg of flue gas (Mfg) per kg of fuel burnt at 150 Deg (Tfg) Calculate the heat loss due to dry flue gas loss. Consider coal GCV 5000 kcal/kg & ambient air temperature 25 Deg C (Ta) Heat loss due to dry flue gas = Mass of

Get A Quote2015/3/17 · Steam, Boiler, and Blowdown Pressure are the same. Combustion Efficiency is the % of fuel energy that is directly added to the feedwater and not otherwise lost or used. Blowdown Rate is the % of incoming feedwater mass flow rate that leaves the boiler as a saturated liquid at boiler pressure.

Get A Quote4. boiler is capable of generating 8 kg steam per kg of fuel at 400 C. Feed water is supplied at pressure of 30 bar, 40 C and leaves economiser at 150 C for entering to evaporator. Steam leaves evaporator with dryness fraction of 0.98 and enters the superheater

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