TCL TAC-07CS, Руководство по обслуживанию, Страница: 70 / 138

Example) By using the Mollier diagram of R-22, find the compression ratio, refrigeratiny effect, work of compres-
sion, calorie of condensation, circulation amount of refrigerant, coefficient of performance, and refriger-
ating effect per 1KW.
Condensation pressure : Pd = 18.1kg/cm
2
abs
Evaporation pressure : Ps = 6.5kg/cm
2
abs
Compression ratio : Pr = Pc/Pe = 18.1/6.5 = 2.78
Enthalpy : i
A
= 148.5kcal/kg
i
B
= 158.5kcal/kg
i
C
= 110kcal/kg
i
D
= 110kcal/kg
i
C'
= i
D'
= 112kcal/kg
i
E
= 148kcal/kg
Accordingly, Refrigerating effect : q
1
= i
A
- i
D
= 148.5 - 110 = 38.5 [kcal/kg]
Work of compression : A
1
= i
B
- i
A
= 158.5 - 148.5 = 10 [kcal/kg]
Calorie of condensation : q
2
= i
B
- i
C
= 158.5 - 110 = 48.5 [kcal/kg]
Circulation amount of refrigerant : G=Q/q
1
= 3320/38.5 = 86.2 [kg/h.RT] (per 1 Refrigerating Ton)
COP : q
1
/A
1
= 38.5/10 = 3.85
Refrigerating effect per 1KW : k = 860 x 3.85 = 3311 [kcal/h. KW]
D
E
A
C
C'
B
D'
8
°
C
15.0
3.0
38
°
C
46
°
C
16
°
C
40
°
C
75
°
C
110 112 148 148.5 158.5
0.0016m /kg
3
0.0024m /kg
3
Absolute Pressure(kg/cm2 abs)
TCL Air Conditioner Service Manual
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