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The Fundamentals of District cooling

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More Energy Efficient
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Reduction in construction costs
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Reduction in maintenance costs

Energy Transfer Station

TES Tank

Pipe Distribution Network

Cooling Plant

District Cooling

District cooling entails the production and circulation of chilled water to multiple buildings through a network of insulated underground pipes. Cooled water is pumped from the central plant through the pre-insulated underground pipes connected to the building connections, which is called Energy Transfer Station (ETS). In the ETS, the coolness of the chilled water is used to chill down the water of the building through a Plate Heat Exchanger (PHE).

How it Works

  • Water is chilled at a central cooling plant 
  • Chilled water is pumped through a network of underground insulated pipes to the customers’ building
  • An air-conditioning water system inside the customer’s building circulates the chilled water 
  • Air is then pumped through the chilled water pipe of the air-conditioning system producing cold air

Benefits of District Cooling

Benefit to Society

Reduces electricity consumption by 50%

Benefit to society

Reducing CO2 emissions

Benefit to Scoiety

Enhancing aesthetics and local environments

Benefit to Society

Reducing Pollution

Benefit to Society

Air conditioning from a sustainable source

Benefit to the Government

Providing financial gain

Benefit to the Government

Reducing the demand on natural gas for power generation

Benefit to the Government

Better space utilization by electrical transmission

Benefit to the Government

Positive impact on carbon emissions

Benefit to the Government

Enhancing the governments credibility

Benefit to the End-User

Up to 60% more energy efficient than conventional cooling

Benefit to the End-User

Lower operating costs and increased operating reliability

Benefit to the End-User

Reduced maintenance costs by 10%

Benefit to the End-User

Improved air quality and temperature control

Benefit to the End-User

Increased revenue through utilization of unoccupied space

Treated Sewage Effluent

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m3 potable water saved
0 Years
Since the conversion
0 Villas
Enough to run for 1 year
Our Potable water savings since 2015

Treated Sewage Effluent​

Effluent is sewage that has been treated in a septic tank or sewage treatment plant. It is also referred to as “trade effluent” or “wastewater.” Effluent is waste other than waste from kitchens or toilets, surface water or domestic sewage. It can be produced and discharged by any industrial or commercial premises. 

Treated Sewage Effluent (TSE) until recently was a water source reserved mainly for irrigation and was not marketable for other uses. Since the regulation changes in the region TSE has gained momentum, namely in the district cooling industry. The use of TSE can significantly reduce capital costs and operational costs, whist reducing the demand on fresh/potable water.

Qatar Cool has implemented TSE in all three cooling plants in the West Bay district, two of which receive direct TSE and the third via an onsite Reverse Osmosis (RO) plant. TSE and wastewater have remarkable potential and benefits in supplementing the fresh water demand, in such industries. Generation of TSE is significantly economical and consumes less energy compared to potable water.


A district cooling plant has the proficiencies to serve an infinite number of buildings in a single...

Plate Heat

The PHE is composed of hundreds of parallel, vertical, thin, metal plates very close to each other...

Thermal Energy Storage

Thermal Energy Storage (TES) Tanks are another energy efficient element of a district cooling plant. TES Tanks can...

Pipe Distribution Network

Energy losses from district cooling pipe systems are rather low due to similar ground temperatures...