2000(Crete)

(Minoan)

755755 (Lebanon)(Mecca)

1040 (S i )1040(Syria)

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231.

2

2.

3.

4.

14

Ps:

-

-

()

-

()()

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

-

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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