POWER ENGINEERING 3B2 - CHAPTER 7
QUESTIONS AND CORRECT VERIFIED
ANSWERS
Co-generationA2canA2beA2definedA2as:A2
a.A2HavingA2twoA2steamA2generationA2unitsA2inA2oneA2plant.A2
b.A2TheA2utilizationA2ofA2steamA2forA2processA2andA2powerA2generationA2purposes.A2
c.A2TheA2utilizationA2ofA2wasteA2heatA2ofA2aA2steamA2boilerA2toA2heatA2feedwater.A2
d.A2TheA2utilizationA2ofA2oneA2formA2ofA2inputA2energyA2toA2generateA2twoA2orA2moreA2form
sA2ofA2outputA2energy.A2
e.A2TheA2utilizationA2ofA2twoA2formsA2ofA2inputA2energyA2toA2generateA2oneA2singleA2formA2
ofA2outputA2energy.A2-A2Ans--D
TheA2primaryA2purposeA2ofA2cogenerationA2is_____________________.A2
a.A2toA2reduceA2theA2equipmentA2costA2
b.A2toA2increaseA2theA2lifeA2spanA2ofA2equipmentA2
c.A2toA2reduceA2theA2pricesA2ofA2naturalA2gasA2
d.A2toA2reduceA2staffingA2costA2
e.A2toA2reduceA2theA2energyA2costA2-A2Ans--E
TheA2advantagesA2asA2comparedA2toA2conventionalA2facilitiesA2ofA2cogenerationA2atA2micr
oA2(local)A2levelA2include:
1)A2ReductionA2inA2theA2totalA2energyA2billA2whenA2electricityA2isA2requiredA2atA2theA2site
2)A2ItA2isA2generallyA2moreA2compactA2andA2lessA2maintenanceA2requiredA2asA2comparedA
2toA2theA2conventionalA2facilities
3)A2ReductionA2ofA2loadA2demandA2onA2heavierA2polluting,A2coal-firedA2facilities
4)A2ShorterA2startA2upA2timeA2
a.A21,A22,A23A2
b.A21,A22,A24A2
c.A21,A23,A24A2
d.A22,A23,A24A2
e.A21,A22,A23,A24A2-A2Ans--B
TheA2applicationsA2ofA2cogenerationA2canA2befallA2intoA2whichA2ofA2theA2followingA2areas:
1)A2InstitutionalA2establishments
2)A2LargeA2scaleA2industriesA2plants
3)A2LocalizedA2centralA2andA2heatingA2andA2coolingA2plant
4)A2TheatresA2andA2restaurantsA2
, a.A21,A22,A23A2
b.A21,A22,A24A2
c.A21,A23,A24A2
d.A23,A24A2
e.A21,A22,A23,A24A2-A2Ans--A
WhichA2ofA2theA2followingA2areA2theA2typesA2ofA2simple-cycleA2cogenerationA2usedA2today:
1)A2BackA2PressureA2SteamA2Turbine
2)A2WasteA2HeatA2Cogeneration
3)A2HeatA2EngineA2Cogeneration
4)A2GasA2TurbineA2
5)A2CondensingA2steamA2turbineA2
a.A21,A22,A23,A25A2
b.A21,A22,A24,A25A2
c.A21,A23,A25A2
d.A22,A23,A24A2
e.A21,A22,A23,A24A2-A2Ans--E
WhichA2oneA2ofA2theA2followingA2simple-
cycleA2cogenerationA2systemsA2bestA2describesA2thisA2process?
A2"SteamA2producedA2fromA2aA2boilerA2drivesA2aA2steamA2turbine,A2whichA2inA2turnA2drives
A2theA2electricA2generator.A2TheA2lowA2pressureA2exhaustA2steamA2fromA2theA2turbineA2isA2
supplyingA2theA2requiredA2heatA2toA2theA2process.A2TheA2condensedA2steamA2fromA2theA2
processA2isA2thenA2returnedA2toA2theA2boiler."A2
a.A2BackA2PressureA2SteamA2TurbineA2
b.A2CondensingA2SteamA2TurbineA2
c.A2WasteA2HeatA2CogenerationA2
d.A2HeatA2EngineA2CogenerationA2
e.A2GasA2TurbineA2-A2Ans--A
WhichA2oneA2ofA2theA2followingA2simple-
cycleA2cogenerationA2systemsA2bestA2describesA2thisA2process?
A2"TheA2wasteA2heatA2producedA2byA2theA2gasA2turbineA2passesA2throughA2anA2exhaustA2h
eatA2boiler.A2TheA2steamA2producedA2byA2theA2boilerA2isA2usedA2forA2heatingA2purposesA2a
ndA2forA2anA2absorptionA2refrigerationA2system".A2
a.A2BackA2PressureA2SteamA2TurbineA2
b.A2CondensingA2SteamA2TurbineA2
c.A2WasteA2HeatA2CogenerationA2
d.A2HeatA2EngineA2CogenerationA2
e.A2GasA2TurbineA2-A2Ans--E
QUESTIONS AND CORRECT VERIFIED
ANSWERS
Co-generationA2canA2beA2definedA2as:A2
a.A2HavingA2twoA2steamA2generationA2unitsA2inA2oneA2plant.A2
b.A2TheA2utilizationA2ofA2steamA2forA2processA2andA2powerA2generationA2purposes.A2
c.A2TheA2utilizationA2ofA2wasteA2heatA2ofA2aA2steamA2boilerA2toA2heatA2feedwater.A2
d.A2TheA2utilizationA2ofA2oneA2formA2ofA2inputA2energyA2toA2generateA2twoA2orA2moreA2form
sA2ofA2outputA2energy.A2
e.A2TheA2utilizationA2ofA2twoA2formsA2ofA2inputA2energyA2toA2generateA2oneA2singleA2formA2
ofA2outputA2energy.A2-A2Ans--D
TheA2primaryA2purposeA2ofA2cogenerationA2is_____________________.A2
a.A2toA2reduceA2theA2equipmentA2costA2
b.A2toA2increaseA2theA2lifeA2spanA2ofA2equipmentA2
c.A2toA2reduceA2theA2pricesA2ofA2naturalA2gasA2
d.A2toA2reduceA2staffingA2costA2
e.A2toA2reduceA2theA2energyA2costA2-A2Ans--E
TheA2advantagesA2asA2comparedA2toA2conventionalA2facilitiesA2ofA2cogenerationA2atA2micr
oA2(local)A2levelA2include:
1)A2ReductionA2inA2theA2totalA2energyA2billA2whenA2electricityA2isA2requiredA2atA2theA2site
2)A2ItA2isA2generallyA2moreA2compactA2andA2lessA2maintenanceA2requiredA2asA2comparedA
2toA2theA2conventionalA2facilities
3)A2ReductionA2ofA2loadA2demandA2onA2heavierA2polluting,A2coal-firedA2facilities
4)A2ShorterA2startA2upA2timeA2
a.A21,A22,A23A2
b.A21,A22,A24A2
c.A21,A23,A24A2
d.A22,A23,A24A2
e.A21,A22,A23,A24A2-A2Ans--B
TheA2applicationsA2ofA2cogenerationA2canA2befallA2intoA2whichA2ofA2theA2followingA2areas:
1)A2InstitutionalA2establishments
2)A2LargeA2scaleA2industriesA2plants
3)A2LocalizedA2centralA2andA2heatingA2andA2coolingA2plant
4)A2TheatresA2andA2restaurantsA2
, a.A21,A22,A23A2
b.A21,A22,A24A2
c.A21,A23,A24A2
d.A23,A24A2
e.A21,A22,A23,A24A2-A2Ans--A
WhichA2ofA2theA2followingA2areA2theA2typesA2ofA2simple-cycleA2cogenerationA2usedA2today:
1)A2BackA2PressureA2SteamA2Turbine
2)A2WasteA2HeatA2Cogeneration
3)A2HeatA2EngineA2Cogeneration
4)A2GasA2TurbineA2
5)A2CondensingA2steamA2turbineA2
a.A21,A22,A23,A25A2
b.A21,A22,A24,A25A2
c.A21,A23,A25A2
d.A22,A23,A24A2
e.A21,A22,A23,A24A2-A2Ans--E
WhichA2oneA2ofA2theA2followingA2simple-
cycleA2cogenerationA2systemsA2bestA2describesA2thisA2process?
A2"SteamA2producedA2fromA2aA2boilerA2drivesA2aA2steamA2turbine,A2whichA2inA2turnA2drives
A2theA2electricA2generator.A2TheA2lowA2pressureA2exhaustA2steamA2fromA2theA2turbineA2isA2
supplyingA2theA2requiredA2heatA2toA2theA2process.A2TheA2condensedA2steamA2fromA2theA2
processA2isA2thenA2returnedA2toA2theA2boiler."A2
a.A2BackA2PressureA2SteamA2TurbineA2
b.A2CondensingA2SteamA2TurbineA2
c.A2WasteA2HeatA2CogenerationA2
d.A2HeatA2EngineA2CogenerationA2
e.A2GasA2TurbineA2-A2Ans--A
WhichA2oneA2ofA2theA2followingA2simple-
cycleA2cogenerationA2systemsA2bestA2describesA2thisA2process?
A2"TheA2wasteA2heatA2producedA2byA2theA2gasA2turbineA2passesA2throughA2anA2exhaustA2h
eatA2boiler.A2TheA2steamA2producedA2byA2theA2boilerA2isA2usedA2forA2heatingA2purposesA2a
ndA2forA2anA2absorptionA2refrigerationA2system".A2
a.A2BackA2PressureA2SteamA2TurbineA2
b.A2CondensingA2SteamA2TurbineA2
c.A2WasteA2HeatA2CogenerationA2
d.A2HeatA2EngineA2CogenerationA2
e.A2GasA2TurbineA2-A2Ans--E