VW Touran manuals

Volkswagen Touran Service Manual: Physical Principles

The four known states of water also apply to air conditioning system refrigerants.
1 -  gaseous (invisible)
2 -  vapor
3 -  fluid
4 -  solid
  Physical Principles
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.
A -  Heat absorption
B -  Heat emission
  Physical Principles

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.
    A/C Technology Basic Principles

    Pressure and Boiling Point
    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:

    Volkswagen Touran Owners Manual. Warning lamp
    First read and observe the introductory information and safety warnings  Lit up Possible cause Correction The tailgate is open or not properly closed. Do not drive on! Open the tailgate and then close it again ...

    Volkswagen Touran Owners Manual. Introduction
    This chapter contains information on the following subjects:  → Opening or closing the windows electrically    → Electric windows – functions    → Roll-back function for the electric windows   Additional information and warnings: Volkswa ...

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