Volkswagen Golf Service & Repair Manual: Pressure and boiling point
| The boiling points given in the table below are always based
on an atmospheric pressure of 1 bar. If the pressure on a liquid
is changed, its boiling point changes also. |
| It is well known that, for example, the lower the pressure,
the lower the temperature at which water boils. |
| The vapour pressure curves for water and for refrigerant
R134a show that at constant pressure and falling temperature the
vapour becomes liquid (in the condenser), and that when pressure
drops, the refrigerant changes from liquid into the vapour state
(evaporator). |
|
|
|
| Vapour pressure curve for water |
| C - |
Vapour pressure curve for water |
| 1 - |
Pressure on the liquid in bar (absolute) |
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| Vapour pressure curve for refrigerant R134a |
| D - |
Vapour pressure curve for refrigerant R134a |
| 1 - |
Pressure on the liquid in bar (absolute) |
|
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 |
Every material consists of a mass of moving molecules. The fast moving
molecules of a warmer material loose part of their energy to slower molecules
possessing less heat. This slows down the molec ...
The vapour pressure table for each refrigerant is published
in the literature for refrigeration engineers. This table shows
the vapour pressure exerted on the liquid ...
Other materials:
Overview of fitting locations - components inside of front passenger
compartment, RHD vehicles
1 -
Air recirculation flap control motor -V113-
Removing and installing
→ Chapter
2 -
Dust and pollen filter
Removing and installing
→ Chapter
3 -
Temperat ...
Removing and installing evaporator
Note
The illustration shows a left-hand drive vehicle. The
removal and installation procedure is identical for both
versions.
Removing
–
Observe instructions when working on refrigerant circu ...
Brake test
General information
The drive is provided by the test rig.
For the test, ensure for vehicles with a manual gearbox that
the gear lever is in neutral, and for vehicles with an automatic
gearbox that the select ...
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Heat always flows from warmer to colder material
Vapour pressure table for refrigerant R134a