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 ...
Other materials:
Run-Flat Tire PAX
WARNING
Run-flat tires must be replaced after they have gone
flat.
Pay close attention to the installation
instructions. Refer to
→ Chapter „Tir ...
Cracking
Cracking is the term for shallow cracks in the sidewall of
the tire.
They run starting from the bulge in the direction of the
tire shoulder. See Illustration for the mentioned components.
Refer to
→ Fig. „“Components ...
13-Pin« Trailer Socket
The backup lamps, »continuous current«
and charging cable can be used on the trailer with the
»13-pin« trailer socket. A
»13-pin« trailer socket is
recommended if a bicycle rack will be installed or a camper will
be towed.
...
© 2016-2022 Copyright www.vwpolo.net
Pressure and Boiling Point