,CONTENT
SUBSECTION PROB lNO.
Concept lProblems 1-18
Properties land lUnits 19-22
Force land lEnergy 23-34
Specific lVolume 35-40
Pressure 41-56
Manometers land lBarometers 57-77
Temperature 78-83
Review lproblems 84-89
,2.a
Make la lcontrol lvolume laround lthe lturbine lin lthe lsteam lpower lplant lin lFig. l1.1 land
llist lthe lflows lof lmass land lenergy lthat lare lthere.
Solution:
We lsee lhot lhigh lpressure lsteam lflowing lin
lat lstate l1 lfrom lthe lsteam ldrum lthrough la
lflow lcontrol l(not lshown). lThe lsteam lleaves
at la llower lpressure lto lthe lcondenser l(heat W
T
exchanger) lat lstate l2. lA lrotating lshaft lgives
la lrate lof lenergy l(power) lto lthe lelectric
lgenerator lset.
2.b
Take la lcontrol lvolume laround lyour lkitchen lrefrigerator land lindicate lwhere lthe
lcomponents lshown lin lFigure l1.6 lare llocated land lshow lall lflows lof lenergy ltransfer.
Solution:
.
The lvalve land lthe Q lleak Q The lblack lgrille lin
lcold lline, lthe the lback lor lat lthe
levaporator, lis bottom lis lthe
linside lclose lto lthe lcondenser lthat
linside lwall land lgives lheat lto lthe
lusually la lsmall lroom lair.
lblower ldistributes
lcold lair lfrom lthe
. The lcompressor
W
lfreezer lbox lto lthe lsits lat lthe lbottom.
lrefrigerator lroom.
cb
, 2.c
Why ldo lpeople lfloat lhigh lin lthe lwater lwhen lswimming lin lthe lDead lSea las lcompared
lwith lswimming lin la lfresh lwater llake?
As lthe ldead lsea lis lvery lsalty lits ldensity lis
lhigher lthan lfresh lwater ldensity. lThe
lbuoyancy leffect lgives la lforce lup lthat lequals
lthe lweight lof lthe ldisplaced lwater. lSince
ldensity lis lhigher lthe ldisplaced lvolume lis
lsmaller lfor lthe lsame lforce.
SUBSECTION PROB lNO.
Concept lProblems 1-18
Properties land lUnits 19-22
Force land lEnergy 23-34
Specific lVolume 35-40
Pressure 41-56
Manometers land lBarometers 57-77
Temperature 78-83
Review lproblems 84-89
,2.a
Make la lcontrol lvolume laround lthe lturbine lin lthe lsteam lpower lplant lin lFig. l1.1 land
llist lthe lflows lof lmass land lenergy lthat lare lthere.
Solution:
We lsee lhot lhigh lpressure lsteam lflowing lin
lat lstate l1 lfrom lthe lsteam ldrum lthrough la
lflow lcontrol l(not lshown). lThe lsteam lleaves
at la llower lpressure lto lthe lcondenser l(heat W
T
exchanger) lat lstate l2. lA lrotating lshaft lgives
la lrate lof lenergy l(power) lto lthe lelectric
lgenerator lset.
2.b
Take la lcontrol lvolume laround lyour lkitchen lrefrigerator land lindicate lwhere lthe
lcomponents lshown lin lFigure l1.6 lare llocated land lshow lall lflows lof lenergy ltransfer.
Solution:
.
The lvalve land lthe Q lleak Q The lblack lgrille lin
lcold lline, lthe the lback lor lat lthe
levaporator, lis bottom lis lthe
linside lclose lto lthe lcondenser lthat
linside lwall land lgives lheat lto lthe
lusually la lsmall lroom lair.
lblower ldistributes
lcold lair lfrom lthe
. The lcompressor
W
lfreezer lbox lto lthe lsits lat lthe lbottom.
lrefrigerator lroom.
cb
, 2.c
Why ldo lpeople lfloat lhigh lin lthe lwater lwhen lswimming lin lthe lDead lSea las lcompared
lwith lswimming lin la lfresh lwater llake?
As lthe ldead lsea lis lvery lsalty lits ldensity lis
lhigher lthan lfresh lwater ldensity. lThe
lbuoyancy leffect lgives la lforce lup lthat lequals
lthe lweight lof lthe ldisplaced lwater. lSince
ldensity lis lhigher lthe ldisplaced lvolume lis
lsmaller lfor lthe lsame lforce.
