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The last project meeting has been held in Athens – Greece the 10th-11th October 2011
Meeting in Athens (GR)
10th to 11th October 2011
The 9th (last) meeting took place in Athens (Greece), in the premises of CRES. The progress of plants (all of them installed and in operation, or almost) and the remaining deliverables have been discussed and a visit on the Greek demo-plant was made.
All partners have expressed their deep sorrow for the death of Tomas Núñez.
Meeting in Barcelona (ES)
9th to 10th May 2011
The 8th meeting took place in Barelona (Spain). It has been organised by AIGUASOL and the ‘Patronat Municipal de l'Habitatge de Barcelona (PMHB)’. Progress of plants (all of them either installed or in the installation phase) and deliverables have been discussed and a visit on the Spanish demo-plant made
Meeting in Oradea (RO)
26th to 27th May 2010
The 7th meeting took place in Oradea in Romania and has been organised by the University of Oradea. The progress on the plants has been discussed and a new timetable has been set concerning deliverables.
Meeting in Athens (EL)
2nd to 3rd December 2009
The 6th meeting took place at the premises of the coordinator at CRES offices in Athens, Greece. Issues discussed focused on the progress of the power plants.
Meeting in Gleisdorf (AT)
28th to 29th May 2009
Regarding the design concepts are considered to be defined and next steps for the realisation of the plants have been discussed. Another major discussion topic has been the amendment of the contract and the change of coordinator within CRES.
Meeting in Barcelona (ES)
19th to 20th November 2008
The fourth meeting has been held in Barcelona, Spain. Discussions included the progress of the simulations and their extension as well as the status of the pilot plants implementation. One plant in Austria has operated while for two additional plants, in Greece and Spain, alternative solutions need to be identified.
Meeting in Stuttgart (DE)

11th 12 th June 2008

The third Highcombi partner's meeeting has beeen held in Stuttgart (DE). During the meeting was discussed the crucial aspect of the different demo plant that will be realized in the different country. A visit to the solar thermal plant with seasonal storages in Neckarsulm and Crailsheim was done.

Meeting in Graz (AT)

15th-16th November 2007 GRAZ (AT)

The second meeting has been held in Graz (AT). During the meeting was discussed about the work done up to now. During the first part of the meeting a final version of the consortium agreement was decided. The final version of the report with end users targeted energy load analysis was presented to the partners. The deliverable D6 about the state of art and similar applications was discussed. The laboratory test about the cheap insulation material was deepened. The highcombi web site structure was faced. In the second part of the meeting the WP3 structure was presented talking about the configuration and the implementation of the models of simulation. The third kick-off meeting will take place in Stutgart during June 2008.

Kick-off meeting in Freiburg (DE)

Monday 18th June 2007

The first Highcombi kick-off meeting has been held in Freiburg (DE) on June 2007. The project rule and the work organization have been presented by the project coordinator (CRES). All the participant have presented their expectative from the project and have outlined the incoming paths to follow for the several work packages developed. The first working meeting will be held in Austria at the end of 2007, when the preliminary results of work packages 1 & 2 will be presented to the project consortium.

Austrian Demo Plants
Within the framework of the sanitation of the Old Town Hall, Austria and the construction of a new building for the Service Centre of the town of Gleisdorf in Austria, a plant was realised for „solar heating and cooling“. Both of the buildings are supplied with heating energy, warm water and cooling energy from a facility management centre in the new building of the Service Centre. In the new building of the Service Centre a ventilation plant was installed for controlled aeration and ventilation.
The main key figures of this project are the following:

Location: Gleisdorf, Styria, Longitude: 015° 42′ E, Latitude: 47° 6′ N
Building use: offices
Conditioned area: Town Hall 1,321 m²; Service Centre 1,212 m²

Solar collector field:
304 m² high temperature flat plate collectors
136m2 on the roof: azimuth: 30° West, slope: 22°
168m2 on “solar trees”: azimuth: 30° East, slope: 30°

Heat storage: 4.6 m³

Calculated cooling load: Town Hall 38 kW; Service Center 24 kW
Cooling load is covered via fan coils in the Town Hall by ceiling cooling elements in the Service Center; hygienic air change for the Service Center is done with cooled supply air based on a DEC system.

Thermally driven absorption chiller (ABC) for fan coils and chilled ceiling: 35 kW
100 kW wet cooling tower
1 m³ cold storage

Desiccant Evaporative Cooling (DEC) device with a maximum air flow of 6250 m³/h and around 35 kW cooling capacity

Calculated heating load: Town Hall 94 kW; Service Center 31 kW
Natural gas fired district heating as back up
Hellenic Demo Plant
The Hellenic Plant is installed at an existing office building, at the site of the Centre for Renewable Energy Sources and Saving (CRES) in Pikermi, Greece. The building covers a total of 427 m2 with a volume of 1296 m3, which is typical of medium sized office and multifamily buildings.
The solar plant covers heating and cooling energy requirements via the already installed fan coils. The system aims at a high solar fraction (SF), defined as the ratio of the energy supplied from the solar plant to the total energy requirements, over 85%.
Some basic information on the Hellenic demo plant is following:
Location: Athens, Longitude: 23.55° E, Latitude: 37.59° N
Conditioned area: about 427m2
Peak loads (kW) and annual energy (MWh) demands (calculated):
Space Heating: 31.7 kW, 12.3 MWh
Space Cooling: 33.2 kW, 19.4 MWh
Sanitary Hot Water: -
Solar filed: 95 m2 of flat plate collectors. Azimuth: 26° West, slope: 30°
Underground thermal energy storage: 58 m3
Thermally driven absorption chiller (LiBr): 35 kW
Backup systems: Heat pump 18 kW (solar assisted in winter)
Italian Demo Plant
The Italian High Combi demo plant has been installed in the ‘Idroscalo’ area at the east side of Milan. ‘Idroscalo’ is a Hydro-Park built in 1930 and today used as a centre for recreational activities with two million visitors a year.
The demonstration solar plant is covering heating, cooling and sanitary hot water loads for one of the buildings (for recreation activities) of the park that has been recently renovated.
Some basic information on the Italian demo plant is following:
Location: Segrate (MI), Longitude: 9.29° E, Latitude: 45.45° N
Conditioned area: about 700m2
Solar filed: about 145 m2 of flat plate collectors. Azimuth: 45° West, slope: 45°
Storage: 18 m3 (in the two main hot tanks), 500 l for sanitary hot water and 4m3 of cold storage

Peak loads (kW) and annual energy (MWh) demands (calculated):
Space Heating: 50 kW, 59 MWh
Space Cooling: 40 kW, 23 MWh
Sanitary Hot Water: 13 kW, 24 MWh

For the distribution of heating and cooling both fan coils and an Air Handling Unit have been installed.
Thermally driven absorption chiller (LiBr): 35 kW, with incorporated cooling tower
Backup systems: a water to water heat pump of 20 kW thermal power is used for winter and an air to water heat pump (40 kW hot and 55 kW cold) is used both in winter and summer.
Spanish Demo Plant
The Spanish Plant is installed at a newly designed building, in the center of Barcelona (Còrsega, 363). The building, owned by the Patronat Municipal de l’Habitatge de Barcelona, has a healthcare center in the three lower floors, and the upper four floors have 32 social housing flats for elderly people . The building has been design and built according to the optimization criteria of AIGUASOL, through the detailed simulation and the proposal of different measures (including the optimal size of insulation, the glasses to be used, the size of the balconies).

The installed system consists of 200 m2 heat pipe evacuated tube collectors, a stratified storage tank, an absorption chiller, a compression chiller and a condensation boiler. The option to install geothermal heat exchangers was disregarded, due to substantially higher investment costs that could not be justified when energy price is taken in account. Additionally, the heat demand in winter is low and could be easily covered by the solar collectors.

The optimization process led to an optimal driving temperature for the absorption chiller (80-75ºC), for the optimal solar collectors inclination (25o) and for the specific heat storage ratio (35 l/m2).

The main components of the Spanish High Combi + plant are:
Evacuated heat pipe tubes
Water as fluid in the primary circuit,
Absorption chiller for 70 kW cooling
Wet cooling tower
Radiant floor for heating and cooling
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