Volkswagen Touran Service Manual: Pressure and Boiling Point
| 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 boiling point also
changes. |
| For example, water boils at a lower temperature the lower
the pressure. |
| The vapor pressure curves for water and refrigerant R134a
show that, at constant pressure, reducing the temperature
changes vapor to liquid (in the condenser) or that reducing the
pressure causes the refrigerant to change from liquid to vapor
(evaporator). |
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| Vapor pressure curve of water |
| C - |
Vapor pressure curve of water |
| 1 - |
Pressure acting on liquid in bar (psi) |
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| Vapor pressure curve of refrigerant R134a |
| D - |
Vapor pressure curve of refrigerant R134a |
| 1 - |
Pressure acting on liquid in bar (psi) |
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The four known states of water also apply to air
conditioning system refrigerants.
1 -
gaseous (invisible)
2&n ...
The vapor pressure table for every refrigerant is published
in literature for refrigeration system engineers. This table
makes it possible to determine the vapor pres ...
Other materials:
Volkswagen Touran Owners Manual. Wheel cover
Fig. 204 Removing the wheel covers
First read and observe the introductory information
and safety warnings Removing the wheel covers
Take the box spanner and wire hook from the tool kit .
Insert the wire hook into one of the holes in the wheel cover.
Push the box spanner t ...
Volkswagen Touran Owners Manual. Test after driving for 10 minutes
First read and observe the introductory information
and safety warnings Re-connect the tyre filler hose and check the tyre
pressure on the tyre pressure monitoring display ⑥.
1.3 bar (19 psi / 130 kPa) and lower:
Do not drive on! The tyre cannot be sealed sufficiently
with the b ...
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Physical Principles
Refrigerant R134a Vapor Pressure Table