Alcalá de Henares

New District Heating and Cooling Network

Climmate zone:

Southern European Weather

The district heating and cooling network in Alcalá de Henares (Spain) covers the building of CEPSA’s R&D centre. The building has laboratories, state-of-the-art machinery and pilot plants capable of reproducing the processes that CEPSA carries out at their production centres, mainly in refining and chemicals.

Spain is one of the most attractive countries in Europe for developing solar energy due to the amount of sunlight available. The direct normal irradiation in Alcalá de Henares is 1980 kWh/m2 year, which makes the concentrated solar technology a promising solution to cover the heating demand of buildings, as well as the cooling demand through absorption chillers.

Furthermore, due to availability of local biomass sources, biomass boilers will become part of the technological design.

Technologies planned for Alcalá demo site:

Concentration Solar Collectors

3 fields with 3 different technologies:

  • CSP (0.5 MWth),
  • Fresnel (0.5 MWth)
  • Concentrated Flat Plate (0.25 MWth)

Solar cooling

1 air cooling unit (~ 10 kW) installed in the office of the central station and 1 advanced absorption chiller (100 kW) for District Cooling supply.

Additionally, a conventional absorption chiller (~ 700 kW) will cover the remaining cooling needs for the district cooling.

Thermal storage

1 thermocline molten salts storage (~30 m3) and 1 water.

High efficiency low emissions biomass boiler

1 biomass boiler (1MW) and improving air filters for reducing air pollutants.

Luleå

Excess heat integration in existing District Heating

Bucharest

Retrofitting of an Inefficient District Heating Section

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