File:Ejemplo 1 SRCV.
EES 22/12/2022 20:30:57 Page 1
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"ESTADO 1"
x[1]=1
T[1]=-10
h[1]=Enthalpy(R12,x=x[1],T=T[1])
s[1]=Entropy(R12,T=T[1],x=x[1])
P[1]=Pressure(R12,T=T[1],x=x[1])
"ESTADO 2"
s[2]=s[1]
P[2]=P[3]
h[2]=Enthalpy(R12,s=s[2],P=P[2])
T[2]=Temperature(R12,P=P[2],s=s[2])
"ESTADO 3"
x[3]=0
T[3]=50
h[3]=Enthalpy(R12,x=x[3],T=T[3])
s[3]=Entropy(R12,T=T[3],x=x[3])
P[3]=Pressure(R12,T=T[3],x=x[3])
"ESTADO 4"
h[3]=h[4]
P[4]=P[1]
s[4]=Entropy(R12,h=h[4],P=P[4])
T[4]=Temperature(R12,P=P[4],h=h[4])
x[4]=Quality(R12,P=P[4],h=h[4])
Q_dot_B=35.2[kW] "POTENCIA DE REFRIGERACION EN EL EVAPORADOR"
"HALLANDO FLUJO MASICO DEL REFRIGERANTE"
m_dot_r*(h[1]-h[4])=Q_dot_B
"HALLANDO EL COEFICIENTE DE PERFORMANCE COP"
COP=(h[1]-h[4])/(h[2]-h[1])
"HALLANDO LA POTENCIA DEL COMPRESOR"
W_dot_c=m_dot_r*(h[2]-h[1])
"HALLANDO EL CALOR RETIRADO EN EL CONDENSADOR"
Q_dot_A=m_dot_r*(h[2]-h[3])
SOLUTION
Unit Settings: SI C kPa kJ mass deg
COP = 3.215 mr = 0.3582 [kg/s] QA = 46.15 [kW]
QB = 35.2 [kW] Wc = 10.95 [kW]
No unit problems were detected.
Arrays Table: Main
hi Ti xi si Pi
[kJ/kg] [C] [kJ/kg-C] [kPa]
1 183.2 -10 1 0.7019 218.9
2 213.7 58.87 0.7019 1218
3 84.92 50 0 0.3036 1218
4 84.92 -10 0.3714 0.3285 218.9
File:Ejemplo 1 SRCV.EES 22/12/2022 20:30:57 Page 2
er. 9.944: #4402: EASY ENGINEERING, https://www.youtube.com/channel/UCjC8ulmve2QNRJXhDpk-L2A+ CN xJID_JLN yNINGGBDE CJH@NYX _NJF
4 R12
5x10
K
g-
/k
4
kJ
10
0 .7
0.8
0.9
1
1.
1
P [kPa]
58.87°C
3 50°C
10
0°C
-10°C
2
10
0.2 0.4 0.6 0.8
1
5x10
0 50 100 150 200 250 300 350 400 450 500
h [kJ/kg]
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3 R12
6x10
58.87°C
3 50°C
10
P [kPa]
0°C
-10°C
2
10
75 100 125 150 175 200 225
h [kJ/kg]
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R12
250
200
3
06
0.0
21
/kg
38
0.0
m3
71
0.0
3
150
0.0
0.1
4
0.2
T [°C]
100
50 1218 kPa
500 kPa
0
218.9 kPa
0.2 0.4 64.66 kPa0.6 0.8
-50
0.0 0.2 0.4 0.6 0.8 1.0 1.2
s [kJ/kg-K]
File:Ejemplo 1 SRCV.EES 22/12/2022 20:30:58 Page 5
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R12
75
50
1218 kPa
T [°C]
25
500 kPa
218.9 kPa
-25
0.3 0.4 0.5 0.6 0.7 0.8
s [kJ/kg-K]
File:Ejemplo 1 SRCV.EES 22/12/2022 20:30:58 Page 6
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R12
300
1218
1000 kPa
kPa
500 kPa
218.9 kPa
250
200
h [kJ/kg]
150
0.9
0.8
100
0.6
50 0.4
0
0.20 0.30 0.40 0.50 0.60 0.70 0.80 0.90 1.00 1.10
s [kJ/kg-K]
File:Ejemplo 1 SRCV.EES 22/12/2022 20:30:58 Page 7
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R12
200
175
h [kJ/kg]
150
0.9
125
0.8
100
75 0.6
0.30 0.40 0.50 0.60 0.70
s [kJ/kg-K]
