District cooling system
District cooling systems (DCS) is a system which distributes chilled water or other media, usually provided from a dedicated cooling plant, to multiple buildings for air conditioning or other uses.
District cooling means the centralized production and distribution of cooling energy. Chilled water which is delivered through an underground insulated pipe line to office, residential and industrial buildings to cool the indoor air of the buildings within a district. The particularly designed units in each of the building then use this water to reduce the temperature of air which passing through the buildings ACS.
The output of one cooling plant is enough to achieve the cooling-energy demand of dozen of buildings. DC can be run on either electricity or natural gas, and can use as regular water or sea water. Along with water and electricity, DC constitutes a new form of energy service.
District cooling helps the environment by increasing energy efficiency and reducing environmental emissions including the greenhouse gas (GHG), air pollution, carbon di oxide (CO2) and ozone –destroying refrigerants. District cooling can minimize annual CO2 emissions by about 1 Ton for every Ton of district cooling refrigeration demand functioned.
DCS –Components
- Central Chiller Plant – Generate chilled water for cooling
purpose . - Distribution Network – Distribute the chilled water to
building . - User Station – Interface or crossing point own building air conditioning circuit.
The following figures illustrate the DCS system in a zone.
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