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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|
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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:
Coming Home and Leaving Home functions (orientation lighting)
First read and observe the introductory information
and safety warnings The Coming Home function is switched on manually. However,
the Leaving Home function is controlled automatically by a twilight sensor.
Coming Home
Action
Switching on
...
Introduction
This chapter contains information on the following subjects:
→ Notes on tow-starting
→ Notes on towing
→ Fitting the front towing eye
→ Fitting the rear towing eye
→ Driving notes on towing
Observe any legal requirements when towing or tow-starting.
...
Removing and installing covers for auxiliary heater control unit -J364
Removing
–
Switch off electrical consumers.
–
Switch off auxiliary and supplementary heater and switch off
ignition.
–
Remove auxiliary heater
→ ...
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Heat always flows from warmer to colder material
Vapour pressure table for refrigerant R134a