VW Polo manuals

Volkswagen Polo Service & Repair 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:

Checklist
Always carry out the following actions for changing a bulb in the given order : Park the vehicle on a firm and level surface at a safe distance from the flow of traffic. Apply the handbrake firmly Braking, stopping and parking Brakes Parking . Turn the light switch to positi ...

Correct sitting position
Fig. 35 There must be a distance Ⓐ of at least 25 cm between the driver and the steering wheel. Fig. 36 Correct seat belt routing and head restraint adjustment First read and observe the introductory information and safety warnings The following details the correct sitting positions for ...

Aqua Premium System, Touch-Up System for Three Layer Colors
Product Description/Objective To achieve an optically flawless color shade transition in the blended area or adjacent parts, for example fender/door. Application Instructions Base Surface ...

© 2016-2026 Copyright www.vwpolo.net