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:
Tires, Aging
Even tires that look in good shape, new or hardly use and
have sufficient tread depth and that are older than 6 years, can
age caused by moisture and winter conditions.
Tire test show that through continual development, new
rubber ...
Battery Terminal Clamp and Battery Terminal, Cleaning
Special tools and workshop equipment
required
Torque Wrench 1331 5-50Nm -VAG1331-
The Contact Surface Cleaning Set -VAS6410- makes optimal
repair quality possible in the realm of vehicle electronics.
Using th ...
EU Tire Label, Short Overview
Starting on 11/1/2012, tire manufacturers must comply with the new
EU Regulation (EG) 1222/2009 (Tire Labeling Regulation).
The Tire Labeling Regulation requires that information pertaining to
rolling resistance (fuel efficiency), wet grip and external rolling
noise b ...
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