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). |
|
|
|
| Vapor pressure curve of water |
| C - |
Vapor pressure curve of water |
| 1 - |
Pressure acting on liquid in bar (psi) |
| 2 - |
Temperature in °C (°F) |
|
|
|
| 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) |
|
|
|
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:
Warning lamp
First read and observe the introductory information
and safety warnings
Lit up
Possible cause
Solution
The tailgate is open or not properly closed.
Do not drive on!
Open the tailgate and close it again.
Several warning and ...
High Pressure Sensor -G65
Note
For switching pressures, removing and installing switches
and switch arrangement and version, see vehicle-specific
refrigerant circuit.
Refer to
→ Rep. Gr.87.
...
Plastic Primer
Adhesion Promoter (Glazing)
Definition:
Adhesion Promoter -ALO 822 000 10- (glazing)
Edition 06/2011
Product Description
The glazing adhesion promoter is a universal
single- ...
© 2016-2025 Copyright www.vwpolo.net
Physical Principles
Refrigerant R134a Vapor Pressure Table