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*What is a Chiller?*

A chiller is a mechanical device that removes heat from a liquid (usually water) using a refrigeration cycle. This cooled liquid is then used to cool air or industrial equipment.

*Types of Chillers*

1. *Air-Cooled Chillers:*
   - Use outside air to cool the condenser.
   - Ideal for open spaces or areas where water cooling is difficult.
   - Easy to install and lower initial cost, but less efficient in hot climates.

2. *Water-Cooled Chillers:*
   - Rely on cooling towers and water to cool the condenser.
   - More energy-efficient and used in large buildings and factories.
   - Require complex infrastructure and regular maintenance.

*Main Components of a Chiller*

- *Compressor:* Pressurizes the refrigerant, raising its temperature and pressure.
- *Condenser:* Cools the refrigerant and turns it into a liquid.
- *Expansion Valve:* Reduces the pressure of the liquid to allow evaporation.
- *Evaporator:* Absorbs heat from water and cools it.

*Advantages of Using Chillers*

- Highly efficient for cooling large spaces.
- Energy savings in the long term (especially with water chillers).
- Precise temperature control of water.

*Applications of Chillers*

- Air conditioning in hotels, hospitals, and malls.
- Equipment cooling in industrial facilities.
- Data center and laboratory cooling systems.