Volkswagen Polo Service & Repair 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) |
2 - |
Temperature in °C (°F) |
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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) |
2 - |
Temperature in °C (°F) |
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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:
Checklist
In some countries, special safety standards and emissions-related
legislation apply that may differ form the construction of the vehicle, Volkswagen
recommends that you visit your Volkswagen dealership before travelling abroad
to find out about any legal requirements and the following is ...
Introduction
This chapter contains information on the following subjects:
→ Stowage compartments in the front doors
→ Stowage compartments in the front centre console
→ Stowage compartment in the front centre armrest
→ Stowage compartment on the front passenger side
&nbs ...
Tire Pressure Sensor and Metal Valve, Removing and Installing
Special tools and workshop equipment
required
Torque Wrench 1410 -VAG1410- and Torque Wrench 1331 5-50Nm
-VAG1331-
–
Place metal valve with rubber seal through rim from inside.
...
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