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). |
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| 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:
Assembly overview - rear brake caliper
When carrying out repairs, install all parts supplied in
repair kit.
Use only methylated spirits for cleaning the brake.
New brake calipers are filled with brake fluid and are
pre-bled.
...
General
Volkswagen vehicles are built according to the latest
findings in safety engineering. To keep it that way, we
recommend the use of only genuine Volkswagen spare parts. These
can be recognised by the VW Audi logo and by the part number. It
has been establ ...
Trade names and designations
Refrigerant R134a is currently available under the following
trade designations:
H-FKW 134a
SUVA 134a
KLEA 134a
Note
Other trade designations ...
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Heat always flows from warmer to colder material
Vapour pressure table for refrigerant R134a