Volkswagen Polo Service & Repair Manual: Physical Principles
| The four known states of water also apply to air
conditioning system refrigerants. |
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| When water is heated in a vessel (heat absorption), water
vapor can be seen to rise. If the vapor is further heated
through heat absorption, the visible vapor turns into invisible
gas. The process is reversible. The warmth is extracted from
gaseous water, vapor forms first, then water and then ice. |
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Heat Transfer
| Every substance consists of a mass of moving molecules. The
fast moving molecules of a warmer substance give off some of
their energy to the cooler and thus slower molecules. As a
result, the molecular motion of the warmer substance slows down
and that of the colder substance is accelerated. This process
continues until the molecules of both substances are moving at
the same speed. They are then at the same temperature and no
further heat exchange takes place. |
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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 boi ...
Other materials:
Upper section of the centre console
Fig. 7 Overview of the upper section of
the centre console
Key for :
Vent
,
Button for:
Seat heating for the left and right
Traction control system (TCS)
Rear window heating
Hazard warning lights
Indicator l ...
Introduction
This chapter contains information on the following subjects:
→ The dangers of assuming an incorrect sitting position
→ Correct sitting position
→ Mechanical controls on the front seats
→ Adjusting the head restraints
→ Removing and fitting head restra ...
Upgrade Kit For VAS1978 -VAS1978/50
The Upgrade Kit For VAS1978 -VAS1978/50- is required in
order to bring the “old”Wiring Harness Repair Set -VAS1978- up
to the new standard of the Wiring Harness Repair Set -VAS1978A-.
The upgrade kit contains four assembly- and ten release tools as
w ...
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Pressure and Boiling Point