Tecnalia visits demo sites in Sofia and Tartu

Our partner coordinator Tecnalia recently visited the demo sites of Sofia and Tartu. This visit marked a pivotal moment in discussing and evaluating ENSNARE’s implementation of advanced technologies within building structures. Both visit agendas encompassed a range of topics, from the installation of solar and HVAC systems to setting up auxiliary structures and electrical infrastructure along modular facade systems. 

Meeting at Balkanika’s Facilities in Bulgaria

Antonio Garrido and Izaskun Álvarez from Tecnalia visited the bulgarian demo site. They engaged in comprehensive discussions and planning with Balkanika specialists in photovoltaic (PV) installation and metal construction. One of the primary discussions revolved around the integration of PV technology within the building infrastructure. Tecnalia shared detailed insights into the installation process, design considerations, and infrastructure dimensioning associated with PV technology. The collaborative effort between Tecnalia and Balkanika ensured alignment on methodology and implementation strategies, with a thorough review process conducted by Balkanika.

The modules are made up of an aluminum frame as the structural element. In front of the main frame and mechanically fixed to it, a solar harvesting technology is located. This technology can be: photovoltaic panel, solar thermal panel or hybrid panel. The modules are connected between them by a tongue and groove geometry of the main frame profiles. They are also connected to the auxiliar structure by anchorage plates and a hook system. This hook has a bolt that allows it to position the module in the plane of the façade. 

From the installation of auxiliary structures to the final positioning of modules, each step was carefully planned to ensure structural integrity and functionality. Moreover, considerations for transportation and packaging highlighted the importance of logistical planning in facilitating smooth assembly processes.

TECNALIA’s visit to Estonia

Upon arrival, Tecnalia was warmly welcomed by the Tartu demo leaders, who guided them through the site and facilitated the meeting with the Construction Company (CC). Led by Märt Möttus and Mirtel Daniel, the visit commenced with a comprehensive exploration of the site, setting the stage for fruitful discussions and collaborative planning.

A significant aspect of the meeting revolved around integrating thermal production with the HVAC configuration of the building. Discussions delved into various options, considering factors such as available space for thermal storage and seasonal demand variations. During discussions, the CC highlighted thermal bridge issues observed at extremely low outdoor temperatures of -29ºC. Taking into account this information our partner Enar, Tecnalia and Riventi designed a constructive solution for the finishing around the windows in order to minimize the problems associated with the thermal bridges.

Tecnalia conducted on-site verification of PV production to validate the installation’s performance. Additionally, a visual inspection of installed modules was performed to ensure correct functionality. Attention to detail was paramount, with checks conducted on module connections, gasket positions, and bottom support to guarantee optimal performance and longevity.

The visit to the two demo sites exemplified the collective efforts and aspirations towards sustainable building infrastructure. Through collaboration, innovation, and meticulous planning, stakeholders aim to realize the vision of energy-efficient and environmentally conscious buildings. As the journey continues, the lessons learned and insights gained will shape the future landscape of urban development, paving the way for a greener and more resilient built environment.