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AT
AT
AT Air
Air
Air
Air Conditioner
Conditioner
Conditioner
Conditioner
- 175 -
Diagnosis
Diagnosis
Diagnosis
Diagnosis and
and
and
and Testing
Testing
Testing
Testing
A/C
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A/C System
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System Performance
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Performance Table
Table
Table
Table
℃ ℉ kPa psi ℃ ℉ kPa psi
D efinition: This table lists the pressure of refrigerant 134a under different temperature. F or example, under room temperature of 26.6
℃ (80 ° F) , the pressure of refrigerant reservoir reaches 595.6 kPa ( 86.4 psi). If the refrigerant is heated up to 51.6 ℃ (125 ° F) , the
pressure shall rise up to 1278.8 kPa ( 185.5 psi).
You
can also determine the boiling point of refrigerant 134a based on different
pressure. F or example, under the pressure of 188.2 kPa ( 27.3 psi), the boiling point of refrigerant R134a is 0
℃
(32 ° F) .
15.5 60 392.3 56.9
-23.3 -10 12.4 1.8 18.3 65 438.2 63.6
-20.5 -5 27.0 3.9 21.1 70 487.3 70.7
-17.7 0 43.2 6.3 23.8 75 539.7 78.3
15.0 5 60.8 8.8 26.6 80 595.6 86.4
-12.2 10 80.1 11.6 29.4 85 655.1 95.0
9.4 15 101.3 14.7 32.2 90 718.5 104.2
-6.6 20 124.3 18.0 35.0 95 785.6 113.9
-3.8 25 149.4 21.7 37.7 100 856.9 124.3
-1.1 30 176.6 25.6 40.5 105 932.3 135.2
0.0 32 188.2 27.3 43.3 110 1012.1 146.8
1.6 35 206.2 29.9 46.1 115 1096.4 159.0
4.4 40 238.0 34.5 48.8 120 1185.2 171.9
7.2 45 272.5 39.5 51.6 125 1278.8 185.5
10.0 50 309.5 44.9 54.4 130 1377.3 199.8
12.7 55 349.4 50.7 60.0 140 1589.6 230.5
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