Valeooscope - Air Conditioning System Thermal comfort loop

11. The components of the A/C Loop

Operation:

Replacement: In the event of an accident, impact or leak, the condenser must be replaced. The most common problems with condensers are: g perforation due to impacts or corrosion g fins clogged or damaged by insects, soiling or high-pressure cleaners g Leaks from the inlet and outlet couplings g insufficient performance caused by adaptable products Air side 1. upstream of the condenser, the incoming air is tepid (from 20°C to 35°C). 2. in the condenser, the air stream gradually heats up by absorbing the heat yielded by the refrigerant fluid. 3. downstream of the condenser, the outgoing air is warmer than the incoming air (from 50°C to 65°C).

Refrigerant side 1. upstream of the condenser, the vapour discharged by the compressor enters at: g High temperature (from 60°C to 120°C) g High pressure (from 10 to 20 bars) 2. in the condenser, the refrigerant fluid yields its heat in the following processes: g Desuperheating (drop of 20°C to 30°C) g Condensation (liquefaction of the vapour at constant temperature and pressure) g Subcooling (liquid saturated with a drop of 5°C to 10°C) relative to the condensation tempera- ture 3. downstream of the condenser, the refrigerant is in the liquid phase, at: g Medium temperature (from 45°C to 55°C) g High pressure (from 9 to 20 bars)

Cooling fan

Condenser

Heat is expelled from the condenser. A phase change occurs.

The condenser

48