DEMONSTRATIVE PLANTS

The four plants have been designed through computer simulation and market validation of components and subsystems. The result is a wide showcase of possible solutions and installation conditions, that range from building integrated rooftop collectors, to ground based fields with soil anchoring system that have been authorized even in protected areas. A requisite in the selection of the plant location has been the impact on the local communities in terms of potential visitor, educational activities, promotional events: two of them have been intalled within universitiy campus, one is linked to a local, well recognized hospital and the last one is built on the roof of a school. Energy services will be delivered to close buildings and all the demo plants will be available to the research and industrial community as learning tools and they will be used as a testbed for future innovation and test of components that could help to improve the performances or to deliver new services. All the systems will generate data that will be collected in a common repository in order to be used in futher capitalization activities promoted by the partner network.

Cyprus

The Cyprus Institute (CyI) chose to build a solar air-conditioning platform to provide cooling and heating to the Novel Technologies Laboratory (NTL), a near to zero energy building. To that a Fresnel collector of 70 kW thermal peak capacity has been installed on the 352sqm large roof of the KEPA School, separated from the NTL by a road. The Fresnel collector has an aperture area of 184 sqm and uses thermal oil at 180°C as a heat transfer medium. The heat is exchanged with pressurized water, then stored in a tank, localized on the roof of the KEPA School, permitting 2 hours of autonomy.
A LiBr single-effect absorption chiller of 35 kW cooling capacity uses this heat to cool the NTL in summer. The chiller is bypassed in winter to produce directly heat. The absorption chiller in integrated to the HVAC system of the NTL, prior implemented with one heat-pump and a two mechanical chillers.
This platform is a pilot demonstration case in Cyprus. It is the first facility to be able to provide cooling thanks to solar concentration all the more in urban environment. This solar facility aims to demonstrate the possibility of reducing the electric/fossil fuels consumption for air-conditioning in countries where DNI is high (around 2000 kW/m2/year).

Egypt

The plant will lay in the north of Egypt at latitude 31° and longitude 30° The plant will be installed on the rooftop of the SEKEM Medical Center. The total surface area of the building is about 963 m2. Classification of the building electric loads in kW are mainly to supply cooling during summer (63% of electric load), winter heating (50%), equipment electric loads (17%) , and water pumping for irrigating the landscape (20%). The solar plant is designed to mainly provide chilled water to cover about 35 kwth (about 10 TR) peak of building cooling load during summer. The extra power output from the solar field shall be used to generate electricity. In winter, the plant shall be mainly used to provide electric power of about 4.3 kWe peak. The extra power output from the solar field shall be used to produce hot water for heating purposes. A thermal energy storage system shall work in conjunction with the solar field, power block, and chiller.

Jordan

The plant will be installed on the rooftop of an educational building in Irbid city located in the north of Jordan.
The plant will generate electric power, cooling/heating, hot water and distilled water by means of one single source which is solar energy. Solar energy will be collected and concentrated in a parabolic tough collector and then used to heat thermal oil to a temperature of 240oC.
In summer, the hot thermal oil will drive the following equipment:

  • Absorption chiller to provide space cooling
  • Steam generator to generate superheated steam at 200oC which will be fed to steam turbine generating electricity (1.5 kW). The condensate from the turbine will be collected as distilled water in a tank.
  • Oil/water heat exchanger to generate hot water and store it in tank excess energy storage.

In winter, the hot thermal oil will drive the steam generator and the heat exchanger to generate hot water for space heating.

Italy

The plant has been localized inside the university campus of Palermo. An area of about 3.000 sqm for the solar field has been assigned to the project by the University board as well as a protected place for the installation of equipment and controls. The position is a strategic one, as the field will be crossed by a bycicle road connecting the campus with a relevant urban park, maximizing the awareness impact on the town. Some of the components are coming out form RTD activities involving regional SMEs that have been participating into the supply chain. Specific solution have been developed in order to address the request of minimize the impact on the land, as it is in an area of archeological interest, close to a river and its naturalized banks.
The solar field has a collecting surface of about 700 sqm and it adopts a linear fresnel design with a compact focal distance. High performance cermet absorbers are heating a bioderivate oil with no environmental impact, thereafter the heat transfer fluid is trasferring its thermal energy to a thermocline molten salt tank, specially designed to work at the suitable temperature range without freezing. A 23kW LiBr chiller and a 10 kW ORC generator, already available are connected to the thermal storage, spilling the energy needed for their operation accordingly with the demand of the close building.

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