Volkswagen Touran Service 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 ...
Refrigerant R134a Physical Data
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Fig. 88 In the driver door:
rotary knob for the exterior mirrors
First read and observe the introductory information
and safety warnings
Turn the
rotary knob to the desired position:
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Volkswagen Touran Service Manual. Foreword
The content of this guide has been divided into two section.
The first section contains information and important tips
about "towing a trailer". For example, technical requirements
for towing or the function of the towing control module are
...
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