4678712
Descripción
Test por TRAVIS CANNING, actualizado hace más de 1 año
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Creado por TRAVIS CANNING
hace más de 8 años
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Pregunta 1
Pregunta
Cogeneration is
Respuesta
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two methods to produce electrical power energy from a single fuel source
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using one energy source to produce two or more forms of output energy
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combining two prime movers such as a gas turbine and diesel generator in one plant system
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all needs are met by one energy source such as power generation, heating, air-conditioning
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having two or more separate electricity generators in parallel on the same grid
Pregunta 2
Pregunta
A combined steam and gas turbine arrangement can be termed:
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an ideal system
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a cogeneration system
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a once through system
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ideal relative to system efficiency
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a high capacity system
Pregunta 3
Pregunta
A cogeneration plant could consist of:
1. diesel engine with attached waste heat boiler
2. gas turbine using a boiler as the combustor
3. steam turbine exhausting to a process steam header
4. gas boiler using the exhaust gas from a gas turbine as combustion air
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1,2
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1,2,3
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2,3,4
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1,3,4
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1,2,3,4
Pregunta 4
Pregunta
The main advantage of cogeneration is to
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reduce total energy costs
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reduce the number of operators required to operate the plant
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quicker start up times as compared to conventional coal fired power plants
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less environmental impact
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all of the above
Pregunta 5
Pregunta
Topping cycle cogeneration is where
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the fuel supplied is first utilized for a process due to the high thermal energy and the waste heat is utilized in a HRSG
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the energy supplied to the electrical power grid is only operated during peak demand periods
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the fuel supplied will first produce electrical power and the heat energy liberated is the byproduct
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all of the above
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none of the above
Pregunta 6
Pregunta
Control strategies in a cogeneration system are dependant upon
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type of available fuel
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base load operation
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peak load demands
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type of facility
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environmental impact
Pregunta 7
Pregunta
Control strategies used with cogeneration systems are:
1. thermal load
2. electrical load
3. environmental impact
4. duct burner and diverter
5. process demand
6. thermal efficiency
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1,2,3
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4,5,6
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1,2,4
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2,4,5
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1,2,3,4,5,6
Pregunta 8
Pregunta
Cogeneration systems may include:
1. gas turbines
2. internal combustion engines
3. waste heat
4. steam turbines
Respuesta
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1,2
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3,4
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1,2,3
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2,3,4
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1,2,3,4
Pregunta 9
Pregunta
The advantages of cogeneration at both the micro and macro levels include
1. wide range of configurations are possible
2. on site electricity
3. quick start-up times
4. pollution free fuel
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1,2
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3,4
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1,2,3
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2,3,4
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1,2,3,4
Pregunta 10
Pregunta
The pollutants emitted form a cogeneration plant may include:
1. carbon monoxide
2. carbon dioxide
3. NOX
4. water
5. ammonia
6. sulphur dioxide
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1,2,3
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4,5,6
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1,2,3,6
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2,3,6
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1,2,3,4,5,6
Pregunta 11
Pregunta
A cogeneration system that utilizes an internal combustion engine is best suited for:
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low electrical loads at varying ambient air conditions
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areas with little water supplies for cooling purposes
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remote locations
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peak demand locations
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any of the above
Pregunta 12
Pregunta
A cogeneration system that utilizes an internal combustion engine extracts heat from the:
1. exhaust gases
2. lubrication oil system
3. engine water jackets
4. fuel system
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1,2,3
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2,3,4
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1,3,4
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1,2,4
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1,2,3,4
Pregunta 13
Pregunta
Duct burner firing in an HRSG is utilized to:
1. produce steam when the gas turbine is off-line
2. increase steam production
3. control superheated steam temperature requirements
4. meet the process steam temperature requirements
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1,2,3
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2,3,4
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1,3,4
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1,2,4
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1,2,3,4
Pregunta 14
Pregunta
Selective catalytic reduction refers to:
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breaking down the fuels constituents to burn cleaner using a catalyst
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decreasing the flue gas temperature by running it through a scrubber
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giving the flue gas an ionic charge for particulate removal
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lowering the total carbon dioxide emissions through a catalyst
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lowering the NOX loading by using a catalyst
Pregunta 15
Pregunta
To lower NOX production selective catalytic reduction may be accomplished using:
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ammonia
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hydrogen
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oxygen
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methane
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biofuels
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