Pressure-Temperature Relationship
WARNING: This page does not describe the selected car, but rather 110 other vehicles, including the 1999 Saturn SW2, 1999 Saturn SW1, 1999 Saturn SL2, 1999 Saturn SL1, and 1999 Saturn SL. However, it is still accessible from the selected car via links, so may be relevant.
A refrigerant, when confined in an enclosed space, increases in pressure as the temperature increases. Conversely, if the temperature is lowered, the pressure also decreases.
Depending on temperature, a corresponding pressure will exist in such an enclosed space. For example, at 70°F (21.1°C) a gauge will indicate about 71.0 psi (5.0 kg/cm2 ). The R-134a PRESSURE- TEMPERATURE RELATIONSHIP table shows this relationship.
R-134a PRESSURE-TEMPERATURE RELATIONSHIP
| Temperature °F (°C) | (1) psi (kg/cm2 ) | ||
|---|---|---|---|
| 20 (-6.7) | 18 (1.3) | ||
| 30 (-1.1) | 26 (1.8) | ||
| 40 (4.4) | 35 (2.5) | ||
| 50 (10.0) | 45 (3.2) | ||
| 60 (15.6) | 57 (4.0) | ||
| 70 (21.1) | 71 (5.0) | ||
| 80 (26.7) | 87 (6.1) | ||
| 90 (32.2) | 104 (7.3) | ||
| 100 (37.8) | 124 (8.7) | ||
| 110 (43.3) | 147 (10.3) | ||
| 120 (48.9) | 171 (12.0) | ||
| 130 (54.4) | 199 (14.0) | ||
| 140 (60.0) | 229 (16.1) | ||
| 150 (65.6) | 263 (18.5) | ||
| 160 (71.1) | 300 (21.1) | ||
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