Chillers
A chiller is a machine that removes heat from a liquid via a vapor-compression or absorption refrigeration cycle. A vapor-compression water chiller comprises the 4 major components of the vapor-compression refrigeration cycle (compressor, evaporator, condenser, and some form of metering device). These machines can implement a variety of refrigerants. Adsorption chillers use municipal water as the refrigerant and benign silica gel as the desiccant. Absorption chillers utilize water as the refrigerant and rely on the strong affinity between the water and a lithium bromide solution to achieve a refrigeration effect. Most often, pure water is chilled, but this water may also contain a percentage of glycol and/or corrosion inhibitors; other fluids such as thin oils can be chilled as well.
Contents [hide]
1 Use in air conditioning
2 Use in industry
3 Vapor-Compression Chiller Technology
4 How Adsorption Technology Works
5 How Absorption Technology Works
5.1 Industrial chiller technology
6 Industrial chiller selection
7 Refrigerants
8 See also
9 References
10 External links
[edit] Use in air conditioning
In air conditioning systems, chilled water is typically distributed to heat exchangers, or coils, in air handling units, or other type of terminal devices which cool the air in its respective space(s), and then the chilled water is re-circulated back to the chiller to be cooled again. These cooling coils transfer sensible heat and latent heat from the air to the chilled water, thus cooling and usually dehumidifying the air stream. A typical chiller for air conditioning applications is rated between 15 to 1500 tons (180,000 to 18,000,000 BTU/h or 53 to 5,300 kW) in cooling capacity. Chilled water temperatures can range from 35 to 45 degrees Fahrenheit or 1.5 to 7 degrees Celsius, depending upon application requirements.
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[edit] Use in industry
In industrial application, chilled water or other liquid from the chiller is
Contents [hide]
1 Use in air conditioning
2 Use in industry
3 Vapor-Compression Chiller Technology
4 How Adsorption Technology Works
5 How Absorption Technology Works
5.1 Industrial chiller technology
6 Industrial chiller selection
7 Refrigerants
8 See also
9 References
10 External links
[edit] Use in air conditioning
In air conditioning systems, chilled water is typically distributed to heat exchangers, or coils, in air handling units, or other type of terminal devices which cool the air in its respective space(s), and then the chilled water is re-circulated back to the chiller to be cooled again. These cooling coils transfer sensible heat and latent heat from the air to the chilled water, thus cooling and usually dehumidifying the air stream. A typical chiller for air conditioning applications is rated between 15 to 1500 tons (180,000 to 18,000,000 BTU/h or 53 to 5,300 kW) in cooling capacity. Chilled water temperatures can range from 35 to 45 degrees Fahrenheit or 1.5 to 7 degrees Celsius, depending upon application requirements.
[1]
[2]
[edit] Use in industry
In industrial application, chilled water or other liquid from the chiller is
References: ^ American Society of Heating and Refrigeration Enginneers http://www.ashrae.org/publications/page/158 ^ Hydronika supplies 5 ton chiller units http://hydronika.com