Volkswagen Polo Service & Repair Manual: Refrigerant R134a Vapor Pressure Table
| The vapor pressure table for every refrigerant is published
in literature for refrigeration system engineers. This table
makes it possible to determine the vapor pressure acting on the
column of liquid in a vessel if the temperature of the vessel is
known. |
| Because each refrigerant has its own characteristic vapor
pressure table, refrigerant can be identified by measuring the
pressure and temperature. |
 Note
| At absolute pressure, 0 bar/psi corresponds to absolute
vacuum. Normal ambient pressure (positive pressure) corresponds
to 1 bar (14.5 psi) absolute pressure. 0 pressure corresponds to
an absolute pressure of 1 bar (14.5 psi) on most pressure gauges
(indicated by -1 bar (-14.5 psi) below 0 bar/psi). |
|
|
|
|
Temperature in °C (°F) |
Pressure in
bar (psi) of R134a |
| -45 (-49) |
-0.61
(-8.84) |
| -40 (-40) |
-0.49
(-7.10) |
| -35 (-31) |
-0.34
(-4.93) |
| -30 (-22) |
-0.16
(-2.32) |
| -25 (-13) |
0.06
(0.87) |
| -20 (-4) |
0.32
(4.64) |
| -15 (5) |
0.63
(9.13) |
| -10 (14) |
1.00
(14.5) |
| -5 (23) |
1.43
(20.74) |
| 0 (32) |
1.92
(27.84) |
| 5 (41) |
2.49
(36.11) |
| 10 (50) |
3.13
(45.39) |
| 15 (59) |
3.90
(56.56) |
| 20 (68) |
4.70
(68.16) |
| 25 (77) |
5.63
(81.65) |
| 30 (86) |
6.70
(97.17) |
| 35 (95) |
7.83
(113.56) |
| 40 (104) |
9.10
(131.98) |
| 45 (113) |
10.54
(152.86) |
| 50 (122) |
12.11
(175.64) |
| 55 (131) |
13.83
(200.58) |
| 60 (140) |
15.72
(227.99) |
| 65 (149) |
17.79
(258.02) |
| 70 (158) |
20.05
(290.80) |
| 75 (167) |
22.52
(326.62) |
| 80 (176) |
25.21
(365.64) |
| 85 (185) |
28.14
(408.13) |
| 90 (194) |
31.34 (454.54) |
The boiling point given in tables for a liquid is always
referenced to an atmospheric pressure of 1 bar (14.5 psi). If
the pressure acting on a fluid changes, its boi ...
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Since 01/01/1998, all passenger vehicles licensed for road use
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accordin ...
Filling the tank with petrol or diesel
Fig. 130 In the right-hand side of the
vehicle at the rear: tank flap open
Fig. 131 Open tank flap with tank cap attached
to the holder
First read and observe the introductory information
and safety warnings Switch off the engine, ignition and the
mobile telephone before filling the ta ...
Battery with Visual Indicator, Checking
WARNING
Risk of injury. Follow all Warnings and Safety
Precautions. Refer to
→ Chapter „Warnings and Safety Precautions“.
Perform Battery Checks in the Follo ...
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Pressure and Boiling Point