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. Radio reception and aerials
First read and observe the introductory
information and safety warnings For factory-fitted radio and navigation
devices, the aerial for radio reception can be installed in various locations in
the vehicle:
On the inside of the rear window, together with the rear window heating,
O ...
Volkswagen Touran Service Manual. CAN Bus Wires, Repairing
Unshielded two-strand wiring -1-
and -2- with a cross section of
0.35 mm2 or 0.5 mm2
can be used as CAN bus wiring.
The color coding of CAN bus wires can be found in the
following table:
...
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Physical Principles
Refrigerant R134a Vapor Pressure Table