How does a water chiller work?
A chiller works on the principle of vapor compression or vapor absorption. As the heat-transfer takes place, the refrigerant evaporates, changing from a low-pressure liquid into vapor, while the temperature of the process coolant reduces. The refrigerant then flows to a compressor, which performs multiple functions.
How does a chiller work?
The high-pressure gas enters the condenser where ambient air or condenser water removes heat to cool it to a high-pressure liquid. The high-pressure liquid travels to the expansion valve, which controls how much liquid refrigerant enters the evaporator, thereby beginning the refrigeration cycle again.
What are the parts of chiller?
Chillers consist of four basic components; an evaporator, a compressor, a condenser, and an expansion unit. Every chiller system contains a refrigerant.
What is the temperature of chiller?
Chilled water temperatures (leaving from the chiller) usually range from 1 to 7 °C (34 to 45 °F), depending upon application requirements. Commonly, chillers receive water at 12°C (entering temperature), and cool it to 7°C (leaving temperature).
What is water-cooled chiller?
A water chiller, or chilled water system, is a type of refrigeration system which uses water as a secondary refrigerant. They are used for larger, more complex, heating, ventilating, air conditioning, and refrigeration (HVACR) applications. Typical applications of water chillers are enumerated below. District cooling.
Which gas is used in chiller?
Ammonia (R717) is a type of refrigerant that belongs to the class of halogen-free chemicals. This is the most popular refrigerant used in chiller plants. It has the highest heat absorption rating which makes it ideal for use in smaller, portable chiller units negating the need for large cooling plants.
What is the temperature of cooling water?
For cooling water (16°C to 30°C), cooling towers are widely used and offer good opportunities for energy saving through low-cost actions such as VSDs for fan control. The total cost of cooling when using cooling towers is often increased substantially because of the need for Legionella controls.
Where is water chiller used?
A water chiller is a device used to lower the temperature of water. Most chillers use refrigerant in a closed loop system to facilitate heat exchange from water where the refrigerant is then pumped to a location where the waste heat is transferred to the atmosphere.
What is TR of chiller?
A ton of refrigeration (TR) is a unit of heat extraction capacity of the refrigeration or cooling equipment. Generally, TR is defined as the amount of heat transferred to freeze or melt 1 short ton of ice at 0 deg. C in 24 hours.