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
Vehicle air conditioning systems make use of the
vaporization and condensation process. In this case, one works
with a substance whic ...
Other materials:
Volkswagen Touran Owners Manual. Interior and reading lights
First read and observe the introductory information
and safety warnings
Button / Position
Function
Switches off the interior
lights.
Switches interior lights on.
Switches door contact switch on ( ...
Volkswagen Touran Owners Manual. Introduction
This chapter contains information on the following subjects:
→ Drink holders in front centre console
→ Drink holders in the rear centre armrest
Bottle holder
Bottle holders are located in the open stowage compartments
of the driver and front passenger ...
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