MCQ in Power Plant Engineering Part 2 | ME Board Exam
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Because water volume increases and decreases with temperature the expansion vessel absorbs the pressure changes (pressure rise) of water when your new boiler heats up the system water. For boilers to operate efficiently and safely they need to operate within a set range (0.7 bar & 2.5 bar).
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Methane is burned with air in a PA Hilton boiler to produce hot water oof 55oC. The fuel is fed at a rate of 7 kg/hr at 25 C, the air enters the boiler at a rate of 130 kg/hr at 42.5oC, and the water enters the boiler at a flow rate of 1000 kg/hr at 10oC. The composition of the dry flue gas leaving the boiler at 700oC are found to be 0.9% O 2
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75 ton CFB distributor industrial 8t boiler bhutan. Fuel Flexibility: The most important advantage of the CFB boiler is the flexibility of firing a wide range of coal from 9500 to 25000 kJ/kg. CFBs can also burn a limitless number of other types of solid fuels, separately or mixed with coal.
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2. BOILERS Bureau of Energy Efficiency 27 Syllabus Boilers: Types, Combustion in boilers, Performances evaluation, Analysis of losses, Feed water treatment, Blow down, Energy conservation opportunities. 2.1 Introduction A boiler is an enclosed vessel that provides a means for combustion heat to be transferred into water until it becomes heated water or steam.
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A coal-fired boiler produces superheated steam steadily at 1 MPa, 500 o C from the feed water which enters the boiler at 1 MPa, 50 o C. For a mass flow rate of 10 kg/s, determine (a) the rate of heat transfer from the boiler to the water. Oil with a density of 800 kg/m 3 is pumped from a pressure of 0.6 bar to a pressure of 1.4 bar, and the
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external pretreatment before the water enters the boiler. Dealkalizing the make-up water will reduce solids that are one of the major sources of carbon dioxide. 3.3.6.1 External pretreatment methods include filtering, softening, and dealkalizing the water. 3.3.7 Utilization …
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6. Fuel 7. Boiler feed water d) Pressure measurements for 1. Steam 2. Fuel 3. Combustion air, both primary and secondary 4. Draft 1. Energy Performance Assessment of Boilers Bureau of Energy Efficiency 6. 1.7.3 Test Conditions and Precautions for Indirect Method Testing
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MCQ in Power Plant Engineering Part 2 | ME Board Exam
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Water is the working fluid in a Carnot vapor power cycle. Saturated liquid enters the boiler at a pressure of 10 MPa, and enters the turbine as saturated vapor. The condenser pressure is 9 kPa. Determine (a) the thermal efficiency, (b) the back work ratio, (c) the heat transfer to the working fluid per unit mass passing through the boiler in kJ
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8. BOILER - A closed vessel in which water or other liquid is heated, steam or vapor is generated, steam or vapor is superheated, or any combination thereof, under pressure or vacuum, for use external to itself, by the direct application of energy from combustion of fuels, electricity or solar energy.
Get A QuoteMar 17, 2015 · 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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Ans. T = 151.8 0C ; W = 13,460 kW 13. Liquid water at 60 bar and 2500C passes through an adiabatic expansion valve, emerging at a pressure P 2 and temperature T 2. If P 2 is low enough, some of the liquid evaporates. If P 2 = 1.0 bar, determine T 2 and the fraction of the liquid water that evaporates. What is the
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See Fig. 6 Boiler feed pump. Fig. 6 Boiler feed pump: Double-suction reactor feed pump made of cast iron. Cast pressure-retaining casing parts are increasingly replaced by forged parts. As an example, such a feed pump could be designed with a flow rate of about 4200 m3/h and a head of about 700 m at a rotational speed of 5300 rpm.
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