Case Study 1: nZEB Smart House DIH

Thessaloniki, Greece

​One demonstration building will be CERTH/ITI nZEB Smart House at CERTH premises in Greece, a 316 m2 rapid prototyping demonstration infrastructureshaped as a real residential household. The house is representative of a single family,
detached residential building and is already equipped with many IoT, smart home solutions that provide a lot of information about its operational characteristics. The existing infrastructure of the building will be extended to incorporate the proposed software tools. The intention is the experimentation with the energy assessment and renovation-support tools, to assess the applicability in real-life situations and their usability along with any margins for further developments. It is equipped with a 9.57kWp PV system and a 5kWh Li-on battery, and a custom BMS for monitoring and control.


Case Study 2: Residential/ Multi-family building in Velten

Velten, Germany

​The building consists of six apartments (three-storey) and a cellar where all the mechanical equipment is located. The building is occupied by 10 tenants. The heating system consists of one Viessmann Vitodens 300-W condensing boiler and one DHW cylinder Viessmann Vitocell with capacity of 150 liters. Oil is the main source of fuel. The whole equipment was installed in 2009, and it is in a good condition. It is set to maintain a water temperature of 60°C and provide hot water to the apartments through radiators. No renewable energy systems are currently installed. The electrical systems (cables) were recently upgraded.
The building has already a BIM model available, and a monitoring system is foreseen to be installed in the building by mid-2019.


Case Study 3: Tertiary building/Offices in Berlin

Berlin, Germany

A building of 2235 m2 with four different heating installations, two gas powered HVAC systems, one gas powered base building heating system and one gas powered "black heater" in the production area. The building is used by a metalworking company and can be divided into the following areas: Stainless steel production hall 2 of the plasma cutting machine, production hall 1, staff room, work equipment warehouse, lathe and milling shop, polish, paint shop and a warehouse. Above the work equipment warehouse, turning shop and milling shop are the offices on the 1st floor. The other areas are designed as an industrial hall. Production hall 1 already has a new, well-insulated roof made of sandwich panels and is heated by a gas heater (200 kWth). The lighting consists of LED retrofit. The paint shop still has the old, uninsulated roof construction. The air heater is powered by oil (203 kWth) and is located in the front area on the wall and heats it through an opening in the wall.
In the production hall 2, a middle wall was removed. This separated the ceiling radiator (approx. 20 kWth) heated area with the plasma cutting machine from the remaining, nonsuspended hall area. The rest of the area is now covered by heated fresh air, which is supplied externally via a ventilation duct. The fresh air heater has a heating capacity of approx. 45 kW. It is a temporary solution, which was installed in the course of the restructuring of the production and is now to be optimally designed. The lighting consists of T5 luminaires in the suspended area and LED Retrofit T8 in the non-suspended area. The regular door openings allow the cooling of the hall.


Case Study 4: Mixed-use building in Nicosia

Nicosia, Cyprus

​FRC’s new wing building is a two-storey 2000 m2 building, built in 2007. University’s cafeteria is in the ground floor, in the first floor there are three seminar halls of 220 students capacity and offices are found in the second floor. The building can host up to 390 people. The services that are provided within the building include heating, cooling, ventilation, lighting and electrical appliances. A 3 kW Solar Water Heating System is currently installed on the building. The building has already a BMS system installed for the monitoring and control of the building’s HVAC systems, lighting and appliances.


Case Study 5: Multi-family home in Berlin

Berlin, Germany

​The fifth pilot building is a multifamily building located at 13817 Berlin-Pankow, Mendelstraße 5. The distinctive characteristic of this case study is the building's age, as it was been erected in 1900. In the last decade, the building has been renovated. Even though the building has great historical importance, there is a lack of extensive documentation that may create some challenges concerning its energy assessment.  The building utilizes electricity and gas utilities to cover its energy demands. Consequently, it can serve as a showcase for the calculation of the operational rating-based EPC. The building has a total area of 2929 m2 and 17 apartments are hosted in it. All the apartments are considered as one thermal zone, because they have the same use (residential). The rest of the building is considered as an unheated thermal zone, which includes the staircase and the basement.


Case Study 6: Multi-family home in Berlin

Berlin, Germany

​This building is located in Neukoelln, Sonnenallee 159, in the  centre of Berlin. It is a historical building consisting of three parts with dominant residential usage. The building was constructed in 1918 with an overall building area of 2231m2 and includes a total of 29 rented apartments. The façade towards the street has partly balconies and a central building ledge located behind a tree. The old box style windows consist of two separate windows with single glazing each, though most of them were exchanged by double glazed new windows with internal shading. District heating was installed in 1989 while there is no central infrastructure for cooling and ventilation.