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Proactive synergy of inteGrated Efficient Technologies on buildings’ Envelopes

Periodic Reporting for period 3 - Pro-GET-OnE (Proactive synergy of inteGrated Efficient Technologies on buildings’ Envelopes)

Periodo di rendicontazione: 2020-09-01 al 2022-09-30

Just as old buildings are part of the image of a city, its inhabitants are also part of this treasure of experiences and have been shaped by the environment and its architecture. For this, it is important to create technical opportunities for renovation so that both buildings and residents can continue to be an inclusive part of the urban legacy. At the same time, this needs to be enabled in an aesthetic way that people will readily embrace.The proposed solution (GET system) consists of an exoskeleton supporting available technologies, to solve the safety-energy-inclusion-beauty challenges at a time. An application (GET.onE.app) with advanced visualization is used as a central tool for owners, occupants, architects, and engineers to communicate and transform the building's renovation process into the most inclusive experience possible, with prefabricated units allowing the extension of living spaces. The holistic approach is applied in a full-scale pilot in Athens (Student house, B FEPA building, University of Athens) and other exploitation models are active for the replication in the EU context.
The project’s key objective consists in an unprecedented integration of technologies and strategies to achieve a multi-benefit approach for an efficient, attractive, and socially inclusive renovation with the highest performances (iii) in terms of:
i) Safety requirements – using the solution of an exoskeleton to increase the overall structural capacity of the building, while supporting the new envelopes (timber-based components, aluminum windows, PV and solar panels);
ii) Energy requirements – by adding new prefab and plug and play envelopes, HVAC and RES;
iii) Social sustainability – increasing the real estate value of the buildings and the desirability of retrofit options by providing space extension with tailored and customized solutions (i.e. balcony, sun-space and extra-room).
The real pilot in Athens is a reference model that shows an innovative, yet readily implementable system for buildings’ envelope for structural, energy and user-orientated retrofit, while increasing the value and the life cycle of buildings.
In contrast to standard renovation actions, that are usually implemented according to over-imposed solutions with limited benefit for final users, the GET integrated system, provides a complete re-shaping of the existing building, which is made visible and experienced both from indoor spaces by the inhabitants and the citizens looking at the building from the outdoor areas. The re-style of the building is conceived by means of façade add-ons, tailored on different social expectations, and defined with variable options; these extensions are, in fact, the results of a combination of human needs as observed in terms of social/ethnographic studies and cost-effective solutions. The project thus makes visible and attractive “the invisibility of retrofit” according to a vision of attractiveness which firstly and foremost reflects the people's perception and attitudes to beauty, as both individuals and community.
The project has been successfully concluded thanks to the full collaboration of all partners and the coordination and management activities in WP1.
WP2 provided a comprehensive state of the art including data to achieve the cost-optimal design and implementation of the proposed system in the real pilot in Athens and in other feasibility case studies (Italy, Romania, The Netherlands).
The focus of WP3 was to provide technical and detailed studies of integrating insulation components as well as RES, considering cost and energy efficiency.
The aim of WP4 was the evaluation of the seismic performance by using advanced simulation techniques for strengthening existing residential buildings through parametric analysis.
An ABACUS of different options in WP5 was designed considering the structural frame and the residential units’ utilities for the 2 feasibility case studies (Italy, Romania) and the real pilot. Furthermore, a web-app has been released (GET.onE.app) to translate the design process into a common user-friendly practice. WP6 focused on the evaluation and quality control of the integrated design and technologies of the GET system; BIM design and management were applied to minimize construction time and optimize the energy and seismic performance.
WP7 focuses on GETs’ assembly procedures on the mock-up and on the real pilot building in Athens by means of: i) the construction of prototypes (demonstrative actions off site) and (ii) the full-scale site construction of GETs in the House of Students in Athens.
In WP8 the monitor and evaluation of the GETs strategy was performed to effectively manage the outcomes and further develop obtained results.
The objective of WP9 was to communicate all the outcomes and KERs of the project that are relevant to all engaged stakeholders, as well as to further innovate the renovation market by embracing the collateral benefits of importance to society and business.
In WP10 Pro-GET-onE delivered: i) a market study of the potential of the GETs technology; ii) a calculation of financial costs, commercial benefits and overall market; iii) a business plan for the commercial-scale implementation of the GET system; a business plan in the framework of a ESCO-Construction Company scenario for a further implementation. Pro-GET-onE consortium has organized and joined conferences and clustering initiatives with sister projects to share knowledge about deep renovation practices and challenges.
The GET system integrates reliable technologies and techniques, with a mature TRL of at least 8, within a construction/renovation process of pre-assembled, user-orientated design. By coupling and combining all this, Pro-GET-onE fulfills these specific objectives:
- A reduction of the net primary energy use in residential buildings, down to an average of 10-30 kWh/m2 per year, compared with the current average of 90-250 kWh/m2 energy per year, for heating and DHW production, ensuring also a strong reduction of cooling loads.
- A complete design strategy for existing reinforced concrete buildings with poor structural performance with a safer seismic performance to approach the levels of the EU standard EN 1998-3, Euro code 8.
- 75 MWh renewable energy per year through the integration of energy production technologies such as photovoltaics.
- An impact on the building industry by marketable solutions, thanks to a dedicated business model and to a modular building system, tailored according to the requirements of the inhabitants, yet implemented through cost-effective, industrialized and BIM assisted processes.
- A cut-down of construction times to one third compared to present standard renovation thanks to prefabricated systems.
The application in the case of Athens, an evolving city of the modernity, with many degraded urban buildings and a strong vulnerability in terms of seismic hazard, demonstrates the technical feasibility of the solution in the future reshaping of the buildings, even in countries with rigid seismic regulation (i.e Greece, Italy). An important leverage factor has been achieved by the future replication of the GET system to the second portion of the pilot, which will be funded by Greek stakeholders. In fact, senators and policy makers recognized the potential of this project and joined their efforts to by-pass barriers for the successful full implementation on the pilot building.
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The real pilot with the GET system constructed in Athens
The real pilot in BIM model