WS-12: PUBLIC BUILDING RETROFITTING

WS-12: Workshop on “Challenges of PUBLIC BUILDING RETROFITTING with Innovative Technologies – An exchange of experience”

 BRICKER: Energy Reduction in Public Building Stock [www.bricker-project.com]

 A2PBEER: Affordable and Adaptable Public Buildings Through Energy Efficient Retrofitting [www.a2pbeer.eu]

 RESSEEPE: REtrofitting Solutions and Services for the enhancement of Energy Efficiency in Public Edification [www.resseepe-project.eu]


This workshop is addressed to the Research Community, Industry, Building Designers, Facility Managers and Public Authorities, involved or planning energy efficient retrofitting projects of public building stock. The session is prepared and held in a joint action be-tween the 3 FP7 projects BRICKER, A2PBEER and RESSEEPE with a total of 11 demonstration sites, five different uses (University, Hospital, Administration Building, School and Museum), in five different countries (BE, ES, TK, SE, UK).The workshop will focus on the innovative technologies selected for the different demo-sites and their instal-lation process. The panel will aim at exchanging with the audience experiences and les-sons learnt from real public buildings energy-efficient retrofitting in different case study buildings and climate conditions within the 3 FP7 projects. The contents of the event are in line with the EU sustainable energy policy agenda. The Energy Efficiency Directive sets a 3% annual renovation target for central government buildings and requires EU countries to establish national plans for renovating overall building stock. Central govern-ment buildings must be renovated to meet at least the national minimum energy perfor-mance requirement set in EPBD. Currently the EC is preparing a recast of the EPBD and regulation success is critical to achieve the ambitious targets in 2020. The panel discus-sion will contribute to raising awareness of the need to make public buildings energy-efficient and provide country specific details.Outcomes: The expected outcome is a joint publication of a Best Practice Guide for retrofitting public building stock, once the retrofit-ting in the three projects is finished. The best practice guide would not only include the lessons learnt from the installation phase but also throughout the whole process. The or-ganisers of the panel will also explore ways of working together to develop a joint final conference for the three projects. bThe panel discussion will offer the opportunity to ex-change experience retrofitting real public buildings. The proposed speakers are repre-sentatives involved in the work at the demo sites. That way, the barriers and engage-ment issues when retrofitting public buildings will be discussed by experts who have been involved in the selection of technologies and the installation process, and who have had to face challenges and have engaged with stakeholders and building users.



The applied innovative technologies will be introduced, how they work, how they are combined for each climate zone, the concept of energy generating buildings etc. Moreover, key issues and challenges experienced related to their installation will be discussed (i.e. technical, health and safety risks, financial, coordination, planning and legislation barriers, etc.). Dialogue and engagement with the audi-ence will foster the potential replication of concepts developed in the projects. The duration of the workshop will be 120 minutes. The structure and timeframe of the panel discussion is the following:  5’ Introduction – moderator  25’ Topic 1: Presentation of the projects and technologies – panelists  20’ Dialogue with audience  45’ Topic 2: Challenges and lessons learnt – panelists  20’ Dialogue with audience  5’ Summary and conclusions – moderator The panel will be composed of representatives of each Project. Due to the panel format, the audience will have the opportunity to interact with the speakers, raise questions, make contributions and share their experience. Moreover the partici-pants will receive follow-up information from the projects by having the chance to sign up for project newsletters and taking home project leaflets.


Project Introduction BRICKER aims to develop a retrofitting solution package for existing public-owned non-residential buildings in order to achieve a drastic reduction of the energy consumption (beyond 50%) and GHG emissions in this sector. This retrofitting package is based on:  Envelope retrofitting solutions for demand reduction through made-to-measure façades, innovative insulation materials and high performance windows.  Zero emissions energy production technologies based on a cogeneration sys-tem fed with locally available and clean renewable sources. Integration and operation strategies´ development for the BRICKER Technologies and guidance for design, commissioning and maintenance. The retrofitting solution package will be implemented in three real demonstration multi-buildings complexes, located in different climate conditions in three different European Countries and with different end-uses: Sanitary, Educational and Administrative. To maximize impact and replicability of the project, technologies´ integration, guidance for implementation and technological transfer to Social Housing will be devel-oped. These should help public bodies on implementation of optimal building retrofitting strategies, taking into account economic and financial aspects in the framework of limited access to funding, breakthroughs and innovative business models and continuous opera-tion strategies during renovation. Intended Outcomes The demonstration buildings are the real test cases of the innovative retrofitting solutions. The following values for energy consumption reduction, associated investments cost and return on investment are expected for the case studies.


Demo Sites The demonstration buildings will be the showcases for the BRICKER project. They are real buildings that are in use and the goal is to demonstrate the performance of the technologies and systems developed. The overall objective of BRICKER is to develop and demonstrate a ret-rofitting solution package for existing non-residential public buildings. The project seeks to deliv-er state-of-the-art energy efficient renovation, demonstrating this in real buildings with different uses set in different countries and climates. Energy savings should go beyond 50% compared to values prior to BRICKER renovation. BRICKER combines various active and passive technologies to achieve energy efficiency in in-novative ways. It will pioneer a tri-generation system capable of providing power, heating and cooling simultaneously. Its power and thermal capacities will be around 150 kW and 600 kW respectively. The system’s activation heat will be produced using roof mounted parabolic solar collectors working on a higher than usual temperature – between 250 to 270 °C. The project will seek to draw on the renewable energy resources available in each region. Bio-mass boilers will be used, as well as geothermal districting heating and absorption chillers which use a heat source to drive the cooling system. This technology already exists but the in-stallations planned under BRICKER will be tailor-made to meet the specificities of each demo site and its surroundings. The passive technologies envisaged include new aerating windows, with an integrated, newly patented electronic heat exchanger, new PIR (PolyIsocyanurate)-based insulation foams with embedded phase-change materials (PCM’s)— which are substances capable of storing and re-leasing large amounts of energy—and state of the art ventilated facades, commercial windows and insulation panels. The BRICKER demonstrations will pave the way towards a replication plan to ensure uptake across Europe and beyond.


Technologies

Organic Rankine Cycle The Organic Rankine cy-cle (ORC) is named for its use of an organic, high molecular mass fluid with a liquid-vapor phase change, or boiling point, occurring at a lower tem-perature than the water-steam phase change.

 Solar parabolic collec-tors: By tracking the po-sition of the sun, parabolic collectors can concentrate the solar radiation on a tube, thus heating the fluid which flows in the tube up to 250-300°C. The hot flu-id can be used for many purposes. This technology is already used for large solar power stations.

 Aerating windows Heat recovery ventilation can be integrated into win-dows, walls, shutters, and heating and cooling units. HRV provides fresh air and improved climate con-trol, while also saving en-ergy. –

 Ventilated façade A sus-tainable lightweight venti-lated façades constitutes a second skin outside the existing façade. A natural vented cavity is located between these two skins creating a void gap for “chimney effect”.  Chillers: thermally acti-vated cooling technologi-esThermally activated cooling involves harness-ing waste heat and using it for cooling applications. There are various tech-niques for achieving this, that can be applied to dif-ferent types of building.  Biomass boiler Biomass CHP plants are commonly used in district heating systems as well as in in-dustries with high heating and cooling demand.  PIR foams with embed-ded Phase Changing Ma-terial PCMs are materials that can adsorb and store thermal energy while its structural phase changes.


he BRICKER consortium brings together 18 partners from 5 different EU-countries: Spain, Belgium, Italy, Germany, Poland, and 1 associate member country, Turkey. Public buildings owners from three different countries, provide three demo-buildings in different climatic zones, focusing on different uses such as the Regional Government of Extremadura in an administrative building in Cáceres (Spain), and the Province of Liège in an academic building in Liège (Belgium). Acciona is a large construction company with research capabilities, private promoter and energy services provider. Acciona cooridinates the BRICKER project. Technology spe-cialised SMEs with research capabilities provide the following input: Rank is a man-ufacturer of ORC machines, Greencom manufactures decentralized balanced ventilation systems integrated in building envelopes, Onur Enerji is an engineering company in the construction sector and an energy services provider, Purinova is the Polish producer of polyester polyols and polyurethane systems, and Soltigua is a developer and supplier of parabolic trough collectors. Cemosa is a specialized architecture and engineering compa-ny, experts in energy efficient building audit and design. Research organizations are represented by CARTIF, EURAC, Fondazione Bruno Kessler, Ozyegin University, Tecnalia, University of Liège. The first three are technological centres dealing with energy efficient buildings and the universities of Ozyegin and Liège are expert universities in energy efficient building design and operation. Exploitation and dissemination is taken care of by professionals Steinbeis and youris.com. Steinbeis is a non-profit research organisation expert in dissemination and exploitation with special capacities in transnational technology transfer and supporting innovation focusing in SMEs. Youris.com EEIG is a non-profit media agency with special expertise in disseminating and promoting European innovation.


A2PBEER is a four year research project partially financed by the Europeon Union 7th Framework Programme and seeks to develop a cost effective, “energy efficient retrofitting” methodology for public buildings, drawing on the expertise of over 21 partners from 11 Europe-an countries. The company Tecnalia are the lead part-ner for this project. Buildings consume about 40% of total final energy in Europe. Energy efficient retrofitting plays an essential part in meeting the EU 20-20-20 targets. A greater im-pact on this can be achieved through interventions in non-residential buildings, as their energy consumption is 40% higher than residential buildings. 30% of non-residential buildings in Europe are public buildings. Therefore A2PBEER focuses on energy efficient retro-fitting of public buildings. In Europe, buildings consume about 40% of total final energy and are responsible for 36% of co2 emissions since 1990, and those buildings built before 1980 represent 95% of this energy consumption. The low renovation rate of building stock since 1990 (1% per year) means that boosting energy efficient buildings’ retrofitting is the only way to reach EU’s “20-20-20” targets. A higher impact will be achieved through interventions in non-residential buildings, as their en-ergy consumption is 40% higher than in residential buildings. Public buildings represent more than 30% of the non-residential buildings in the EU. A2PBEER partner, ABUD Ltd will develop an initial systemic energy efficient buildings’ retrofit-ting methodology for the three demonstration sites with the intention to provide a retrofitting methodology to be replicated into Public Buildings in Europe. This will take advantage of synergies derived from interventions at the district levels. Three public buildings located in Bilbao Spain, Ankara Turkey and Malmo Sweden have been chosen to serve as demonstration districts. The chosen sites represent the three main climatic regions of Europe – Oceanic, Mediterranean and Continental. A range of innovative technolo-gies will be developed and deployed at these sites with a view to achieving a highly efficient integrated retrofitting methodology that can be replicated throughout the European Union.


Technologies

A2PBEER methodology will include existing available building solutions and also ad-vanced innovative ones developed by the project. These include: a “high performance envelope retrofitting”, based on an external and internal super-insulated façade (VIP–Vacuum Insulated Panels) retrofit. Smart windows. “smart lighting systems” combining LED and natural light, and the “Smart Dual Thermal Substation”, a new approach to district heating based in smart grid functionality and integrating heating and cooling. A “kit-concept” will be applied in the development of new solutions in order to deploy adaptable and affordable solutions. Retrofitting Strategies The methodology and developed kits will be demonstrated and validated by one of the part-ners Acciona-infraestructuras through three real retrofitting deployments, covering main cli-matic areas in Europe (Continental, Oceanic and Mediterranean), different types of Public districts and main Public end-users.


A2PBEER partner, ABUD Ltd will develop an initial systemic energy efficient build-ings’ retrofitting methodology for the three demonstration sites with the intention to provide a retrofitting methodology to be replicated into Public Buildings in Europe. This will take advantage of synergies derived from interventions at the district levels. Three public buildings located in Bilbao Spain, Ankara Turkey and Malmo Sweden have been chosen to serve as demonstration districts. The chosen sites represent the three main climatic regions of Europe – Oceanic, Mediterranean and Continen-tal. A range of innovative technologies will be developed and deployed at these sites with a view to achieving a highly efficient integrated retrofitting methodology that can be replicated throughout the European Union


1. FUNDACION TECNALIA RE-SEARCH & INNOVATION, Spain 2. D’APPOLONIA SPA, Italy 3. TOSHIBA TRANSMISSION & DIS-TRIBUTIONEUROPE SPA, Italy 4. CWS Comfort Window System AB , Sweden 5. PARANS SOLAR LIGHTNING AB, Sweden 6. CLIMATEWELL AB, Sweden 7. BERGAMO TECNOLOGIE SPZOO, Poland 8. ACCIONA INFRAESTRUCTURAS S.A., Spain 9. ISOLEIKA KOOP.ELK. S COOP, Spain 10. ABUD MERNOKIRODA KFT, Hun-gary 11. EKO DENGE CEVRESEL EKONOMIK SOSYAL ARASTIRMA DANISMANLIK MUHENDISLIK PROJE INSAAT TICARET VE MUMESSILLIK LIMITED SIRKETI, Turkey 12. AFLIVA DANISMANLIK VE EGITIM MERKEZI IKTISADI ISLETMESI, Turkey 13. HEP – ESCO DOO ZA VODENJE I FINANCIRANJE PROJEKATA ENER-GETSKE UCINKOVITOSTI, Croatia 14. IVL SVENSKA MILJOEINSTITUTET AB, Sweden 15. LIMERICK INSTITUTE OF TECH-NOLOGY, Ireland 16. UNIVERSIDAD DEL PAIS VASCO/ EUSKAL HERRIKO UNIBERTSI-TATEA, Spain 17. MALMO STAD, Sweden 18. NATIONAL MINISTRY OF EDUCA-TION, Turkey 19. OSLO KOMMUNE, Norway 20. ENTE VASCO DE LA ENERGIA, Spain 21. OFFICE PUBLIC D’AMENAGE-MENT ET DE CONSTRUCTION DE L’ISERE, France



Project Introduction

RESEEPPE will bring together design and decision making tools, innovative building fabric manufacturers and a strong demonstration program to demonstrate the improved building performance through retrofitting. The core idea of the RESSEEPE project is to technically advance, adapt, demonstrate and assess a number of innovative retrofit technologies. Reductions in the area of 50% will be achieved in terms of energy consumption. A systemic process will be also imple-mented that will allow the selection of the best possible retrofitting mix, customized to the needs of the particular building. Several remarkable innovative technologies and ma-terials will be integrated in the retrofitting process:  Envelope Retrofitting: Ventilated Facades, Aerogel-based Super-insulating mortar, Wooden Insulating Wall Panel and VIP Panel  Integration of RES: PV Energy, Thermal Collectors  Energy Storage Systems: Thermal storage and PCMs  Nanotechnologies and smart materials: EC/PV Windows  ICT: Strategies at building and district level Intelligent Building Controls, HVAC systems The RESSEEPE technologies will be validated in three different demo-sites:  Coventry (UK) Skellefteå (SE)


Intended Outcomes

The scientific and technological objectives of RESSEEPE project are the following:  To set up a diagnosis methodology for an integrated renovation of public edification at building and district level.  Innovative development and enhancement of SoA retrofit technologies that will be able to achieve energy savings in the area of 50%.  Development of a systemic view for selection of the most empowering retrofitting mix: Net-zero energy renovation of existing public districts. To validate the RESSEEPE technologies in three different demo-sites. Although the energy consumption in Europe is expected to rise only moderately in the next 20 years, the Energy Efficiency Buildings European Initiative has the objective to mitigate this problem aiming a reduction of 165 million tons of emissions (Mtoe) from the existing buildings (in 2005) and a contribution of 50 Mtoe from renewable energies during the period from now until 2020. Existing public buildings have a huge impact on the total energy use in Europe. For example, in France, the hospitals alone represent about 11% of the energy consumption in the service industry with an average of 225 kWh / m² per year 2. The poten-tial for energy savings is thus particularly important at national and European level, where many facilities are very energy-intensive, and where the priorities are the functional quality of the buildings and the respect of optimal use conditions. In particular, the project aims to achieve the following target values: Associated investment costs to building renovation are expected to represent a maximum of 19% on average of the total costs of building an equivalent new building in the same lo-cation. On average, the return on investment will be around 7,6 years.


The consortium was planned according to principles of scientific, technical and oper-ative complementarity and self-consistency. The consortium covers all the R&D as-pects: from basic research on advanced materials and their properties to applied re-search on innovative devices for technology transfer to industry, from small enter-prises to industrial exploitation. The coordinator along with the participants collective-ly constitutes an experienced consortium capable of achieving the RESSEEPE pro-ject objectives. The multidisciplinary consortium has been configured with a well-balanced share of consortium from different backgrounds. The consortium comprises 25 partners in 10 different countries: United Kingdom, Spain, Austria, France, Italy, Greece, Germany, Switzerland, Slovenia and Sweden.