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How Air Conditioner Works

How Air Conditioner Works


How Air Conditioner Works

Here's the sequence of how an air conditioner works:
1. The compressor pressurizes the refrigerant, typically a gas like Freon or R-410A.
2. The high-pressure refrigerant moves to the condenser coil located outside the building.
3. In the condenser, the refrigerant releases heat to the outside air and condenses into a high-pressure liquid.
4. The liquid refrigerant moves through the expansion valve, where it undergoes a rapid pressure drop, becoming a cool, low-pressure liquid.
5. The cool liquid refrigerant enters the evaporator coil inside the building.
6. In the evaporator, the refrigerant absorbs heat from indoor air, causing it to evaporate into a low-pressure gas.
7. The indoor fan blows warm indoor air over the evaporator coil, cooling the air in the process.
8. The now-warm refrigerant gas returns to the compressor to start the cycle again.

This continuous cycle removes heat from indoor air, providing cooling comfort to the indoor environment.


Overview

Here's a simplified overview:

*Refrigerant Actions and Transformations:*
1. *Compression:* Refrigerant is compressed by the compressor, increasing its pressure and temperature.
2. *Condensation:* High-pressure, high-temperature refrigerant flows to the condenser where it releases heat to the outside air, condensing into a liquid.
3. *Expansion:* The liquid refrigerant passes through the expansion valve, experiencing a rapid pressure drop, which causes it to expand into a cool, low-pressure liquid.
4. *Evaporation:* The cool liquid refrigerant enters the evaporator coil where it absorbs heat from indoor air, evaporating into a low-pressure gas.

*Temperature Changes:*
- *Compression:* Refrigerant temperature increases.
- *Condensation:* Refrigerant temperature decreases.
- *Expansion:* Refrigerant temperature decreases further.
- *Evaporation:* Refrigerant temperature remains low as it absorbs heat from indoor air.

This cycle repeats continuously to cool indoor spaces efficiently.

Compression, Condensation, Expansion, Evaporation

 
Troublshooting Tips

Tips to troubleshooting when air conditioner is not deliver cool air:

1. To check if compressor is running.
2. To check is the condenser fan is running.
3. To check if there is any leak/oil stain around compressor and condenser, as it is common place where the refrigerant leak by pressurizes.
4. To check if expansion valve is functioning soundly.
5. To check if the evaporator fan is spinning.
6. To check if there is any leak/oil stain around coil.

Note : All components are vital, comprising a unified system; a single malfunction can disable the entire air conditioning unit. Relying on coil temperature to detect refrigerant leaks is unreliable, as a single component failure can cause the designated temperature to deviate from its intended value."

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