Volkswagen Golf Service & Repair Manual: Heat always flows from warmer to colder material
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 molecules of the warmer material and accelerates those with less heat. This continues until the molecules in both materials are moving at the same speed. They have the same temperature, and no further exchange of heat occurs.
Physical basics
The four known physical states of water also apply to air
conditioning refrigerants.
1 -
Gas (invisible)
2&nbs ...
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 al ...
Other materials:
Assembly overview - heat shield
1 -
Underbody heat shield
Removing and installing
→ Chapter
2 -
Retainer
Qty. 6
3 -
Heat shield for centre exhaust system
Removing and installing
→ Chapter.
4&n ...
Cigarette lighter -U1-
The following descriptions apply to the rear left cigarette
lighter -U3-, rear right cigarette lighter -U7-, rear cigarette
lighter -U9-, 12 V socket 2 -U18-, 12 V socket 3 -U19-, 12 V
socket 4 -U20-, cigarette lighter 2 -U25- and 12 V socket 5
-U26- so ...
Removing and installing thermostat for small cooling circuit
Removing
–
Remove coolant pump
→ Chapter.
–
Remove bolts in the sequence -F … A-.
–
Detach coolant pump from ...
