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2000(Crete)
(Minoan)
755755 (Lebanon)(Mecca)
1040 (S i )1040(Syria)
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231.
2
2.
3.
4.
14
Ps:
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()
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()()
Q m* (h1 h4)Q=m* (h1-h4)
[m: h:]
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()()(
))
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R-
22R-407R410R134a22 R 407 R410 R134a
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(R(R--12)12)()
23
14
()
-()
(R(R--22)22)
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(R(R--134a)134a)
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SI
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CMM (m3/min) , CFM (ft3/min), CMH (m3/hr)
[ 1CMM=60CMH , 1CMM=35.3CFM , 1CFM=1.7CMH ]
GPM (gal/min) , LPM (L/min)
[ 1GPM=3.785LPM ] [ 1gal=3.785Liter ]
USRT(RT) , Kcal/hr , Btu/hr , MBH , Kw
[ 1RT=3024Kcal/hr =12000Btu/hr =12MBH =3.517Kw ]
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mmAq , inch(WG) , Pa
[ 1inch(WG)=25mmAq , 1mmAq=10Pa ]
[ 1K / 2 10 WG ][ 1Kg/cm2=10mWG ]
M/S , FPM (ft/min)
[ 1M/S=196.8FPM ]
M2 , Ft2 ,
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[ 1=3.3M2 , 1M2=10.76Ft2 ] [ 1M3=35.3Ft3 ]
Q=60*LPM* T
[ Q: Kcal/hr LPM: l/min T:(T2-T1) T2:() T1:() ]
1RT 1RT5
Ans:Ans:
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Q=500*GPM* T
[ Q: Btu/hr GPM: Gal/min T:(T2-T1) T2:() T1:() ]
1RT 2 4GPM 1RT2.4GPM
Ans:Ans:
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()
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A.
Qr=U*A*(CLTD)
Qw=U*A*(CLTD)( )
Qgc=U*A*(CLTD) Qgr=A*(SC)*(SCL)Qgc U A (CLTD) Qgr A (SC) (SCL)
** U: SC: A:
CLTD: Cooling Load Temperature Differential
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g p
SCL: Solar Cooling Load
B.
Qi=U*A*T
Qigc=U*A*Tg
** U: A:
T :
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C.
Qps=N*SHG*CLF
Qpl=N*LHG
Qe=(Kw)*CLF*F1
Qm=(Kw)*CLF*F2
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C.** N: SHG: LHG:
CLF:(Cooling Load Factor)
1:CLF1.0
(1)24(1)24
(2)24
(3)(3)
2:F1F2
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D. Qsh=1.12*m*(To-Ti)
Qlh=2.78*m*(Wo-Wi)
Q Q h Qlh 1 10* *(H Hi)Qt=Qsh+Qlh=1.10*m*(Ho-Hi)
** m:(Lps) To Ti: () Wo Wi: (g/kg)** m:(Lps) To,Ti:() Wo,Wi:(g/kg)
Ho,Hi:(kj/kg) Q (w)
1: 1.1235 DB/55%RH0.9m3/kg2.7835DB/
55%RH
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U
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U
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USC
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U
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()
(1)34DB,60%RH (2)34DB,70%RH
(3)35DB,60%RH (4)35DB,70%RH
(5)36DB 60%RH (6)36DB 70%RH(5)36DB,60%RH (6)36DB,70%RH
( DB, %RH)
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E.E.R.C.O.P. E.E.R. (Energy Efficiency Ratio)
C li H i Eff i B /hColing or Heating Effect in Btu/hr
E.E.R.=
Power Supplied in WattsPower Supplied in Watts
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E.E.R.C.O.P. C.O.P. (Coefficient Of Performance)
C.O.P.E.E.R.
Qin ()
C O P =C.O.P.
Win ()
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E.E.R.C.O.P.
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[79]
1 20 20 15 1.202015
Ans:
Q=60*LPM* T
20RT*3024Kcal/RT=60*LPM*(20-15)
=201.6LPM
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2.
A 20m*10m*4mH A.20m*10m*4mH(U2.4w/m2/k)10
B.10120w/85w/CLF0.8
C.25w/m210150wCLF0.75
D.8Lps/35/55%RH25/65%RH
To=35,Ti=25,Wo=19.5g/kg,Wi=13g/kg
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2.
Ans: A. Qw=U*A*(CLTD)Qw1=(20m*4mH)*2*2.4w/m2/k*10 =3840W
Qw2=(10m*4mH)*2*2.4w/m2/k*10 =1920W
B Qps=N*SHG*CLF Qpl=N*LHGB. Qps N SHG CLF Qpl N LHG
Qps=10*120w/*0.8=960W
Qpl= 10*85w/=850W
C. Qe=(Kw)*CLF*F1 Qm=(Kw)*CLF*F2Qe=(20m*10m)*25w/m2*0.75=3750W
Qm=(10*150w/)*0.75=1125W( )
D. Qsh=1.12*m*(To-Ti) Qlh=2.78*m*(Wo-Wi)
Qsh=1.12*(10*8Lps/)*(35-25) =896W
Qlh 2 78*(10*8L /)*(19 5 13) /k 1446W
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Qlh=2.78*(10*8Lps/)*(19.5-13)g/kg=1446W
Qtotal=Qw1+Qw2+Qps+Qpl+Qe+Qm+Qsh+Qlh=14787W/3517=4.2RT
THANK YOU !!THANK YOU !!
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