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CEC5 – Good practice booklet
Chosen good practices in the field of energy efficiency
in eight Central European countries
Demonstration of energy efficiency
and utilisation of renewable energy
sources through public buildings
Good practice booklet
Chosen good practices in the field of energy efficiency
in eight Central European countries
Ljubljana, November 2014
WP 2, OUTPUT 2.4.6
Prepared by: Ministry of the Environment and Spatial Planning of the Republic of Slovenia
Table of contents Introduction
About the project
About the good practice booklet
Good practices from AUSTRIA
Municipal Office of Lorüns
Secondary School Doren
Social Center Egg
Good practices from CZECH REPUBLIC
Advisory center and offices OTEVŘENÁ ZAHRADA Brno
Ecohotel and sustainability training centre Hostětín
Good practices from HUNGARY
Fényi Gyula Jesuit High School, József building and dormitory
Budapest district XVII health care centre
Archbishop Palace of Eger
Good practices from GERMANY
Office Building, City of Ludwigsburg
Museum of the City of Ludwigsburg
Good practices from ITALY
ERDISU New Student Housing
New “via Baldasseria Media” Nursery School
New locker room building
Good practices from POLAND
Passive sports hall in Slomniki
Demonstration Center of Renewable Energy Sources in Bydgoszcz
Passive school building in Budzow
Good practices from SLOVAKIA
Logistic, administrative and training centre Herz Slovensko
EcoPoint office center Košice – stage I
Supermarket TESCO Rajec
Good practices from SLOVENIA
School centre Velenje - Low energy house in energy polygon
Kindergarten and school Žaga
Key conditions for the success of the good practice examples
Wider effects in the region initiated by the good practice
Implementation of the CESBA-Process
Project CEC5 - Good practice booklet, Output 2.4.6 Page 2 Introduction About the project The overall objective of the project “Demonstration of Energy Efficiency and Utilisation of Renewable Energy Sources through Public Buildings - CEC5” is the promotion of energy efficiency and exploitation of renewable energy sources through application demonstration in public buildings. The CEC5 project is co-founded by the ERDF through the Central Europe Programme, under its Priority 3.3, Supporting the Use of Renewable Energy Sources and Increasing Energy Efficiency.
The Central Europe Programme underlines within Priority Axis 3 elements such as the transfer of good practices in RES, eco-innovations and sustainable buildings. Within the present project, these elements are directly addressed in a combined way. The CE area is a highly urbanised area with a large stock of existing public and private buildings with low energy efficiency. Great efforts are needed to overcome the problem of high energy consumption. To reach the goal of nearly-zero energy buildings there is a broad need for identifying and adopting new techniques, methodologies and investments.
In this context the project CEC5 offers three core outputs:
1. Implementation of a common certification procedure for ecological (RES and EE) public buildings:
the overall goal is to achieve a model for public buildings (pattern) to increase the demand for zero energy buildings on a large scale. Project partners from 8 EU member states are making a concerted effort to establish a common certification standard. Experiences from various certification concepts and results from other EUprojects are being used and adapted.
Common European Sustainable Building Assessment - CESBA is on the one hand a methodology for assessing existing and new buildings, and on the other hand a framework for EU projects to reach higher convergence through a common process. CESBA as an initiative for a new culture of built environment provides a generic tool based on the key performance indicators and reference performance indicators that are used within building stages starting from the beginning of the Life Cycle of the buildings (from the design, the sourcing of the materials, etc.) and lasting until their end with the de-construction or demolition phase, taking into account the entire Life Cycle of the building. The CESBA Initiative also aims to propose and promote a common framework by different transnational projects, which could open the path to a better understanding, implementation and promotion of building sustainability, on a large scale. A common platform for sharing experience and know-how has been set up on the wiki platform: http://wiki.cesba.eu
2. Setting up sample buildings, establishing a show case model for citizens:
After the development of joint criteria for nearly zero energy building, 7 demonstration buildings in 7 Central European countries have been set up to demonstrate and promote energy efficient public buildings and show new techniques and methodologies which can be applied in the private sector as well. The buildings are partly designed as an exhibition place for citizens; accessibility is guaranteed and excursions, seminars, trainings and various other visit opportunities are offered, as are trainings in the field of handcraft and industrial prefabrication during the phase of building. The Consortium has prepared a concerted promotion concept for the general public.
3. Establishing a transnational network:
Transnational network to develop the ecological quality of constructions by offering certification services in the public sector has been set up to ensure that a continuous development and dissemination takes place, increasing the general construction standard towards energy efficiency and more sustainable construction. The transnational network offers the development and maintenance of the jointly applied certification process for ecological building in the public sector.
Project CEC5 - Good practice booklet, Output 2.4.6 Page 3 The project consortium is composed of regional development agencies, construction institutes, experts, architects, local and regional public authorities and ministries, as the bigger the network, the bigger the scope of possibilities of reaching out with the promotion of EE and RES solutions. The Consortium includes 12 organizations from 8 Central European countries states. Seven public organizations among project partners have made investments (outside of the project funds) into public buildings.
About the good practice booklet Exploring existing good practices is a way to address the challenge of improving energy efficiency and sustainability of construction in the region. The present booklet with a selection of good practices across the Central European countries by project partners shows what has been done and can be considered a model to be followed.
Good practices were prepared following guidelines for the transfer of the public building model to private households and office buildings. For the dissemination of low-energy standards into the private and business sector, project partners agreed on a standardized documentation to present advantage of a near-zero energy demand public building. Based on this documentation, project partners filled in up to 5 good practice templates and in this way presented examples of building with solutions worth spreading.
The process then involved inter-partnership consultation to choose 3 best practices per country, the selection of which is presented below. The booklet intends to inspire and help with further successful implementation of RES and EE measures by both private and public sector with the process of spreading good practices.
The methodology for assessing good practice examples involved assessment of the regional state of the art in the field of public buildings, from legal framework to concrete energy performance indicators of the good practice example. However not everywhere all the data could be gathered, so contact details are listed under each of the presented example and more details on the building and its wider impact could be provided upon request.
Regional state of the art in the field of public buildings Overall, countries in the Central Europe do not have any legal requirements for sustainability certification, only standards related to energy efficiency are set as required by EU legislation.
In the Czech Republic, national law prescribes calculation of the energy performance with CSN Standard and TNI Standard (for construction before 2009, start of certificates of energy efficiency, with existing limits for maximal heat demand per square meter). Czech national legislation has requirements also for Blower-Door tests.
Hungary has an energy performance certificate in line with the Ministerial Decree No. 7/2006. (V. 24.), TNM on the establishment of energy characteristics of buildings. The Ministerial Decree does not include the building envelope that is thicker than 50 cm, because it exceeds the limit of the stationer thermal flow.
German regions have no legislation requirements for sustainability certification. There are legislation requirements for energy efficiency certification (Calculation of the energy performance with DIN V 18599;
regulated through the EnEV2009, national law) and for certification of renewable energies or better energy efficiency of the building (EEWärmeG).
Poland has no legislation requirements for sustainability certification, only for energy efficiency - The Act of 15 April 2011 on energy efficiency (Journal of Laws of the Republic of Poland of 2011 No. 94, item. 551 with later amendment); legislation lays down the obligation and methodologies for building energy certification preparation.
In Slovakia, the legislation requires that all heated buildings constructed after 2008 should have energy certificate at least in B category. There are public and private awards for exceptional performers, such as Via Bona Slovakia, Dušan Jurkovič Award and CE.ZA.AR award.
Slovenia has no legislation requirements for sustainability certification, only for energy efficiency - certificate in line with the Act EZ-UPB2 from 2007. The Act requires an energy certificate for all public buildings with an area of more than 1000m2 – due to different problems certification of public buildings started only recently.
Project CEC5 - Good practice booklet, Output 2.4.6 Page 4 Good practices from AUSTRIA Municipal Office of Lorüns Passive House in lightweight construction
Architecture The new municipal office Lorüns was inserted as a compact building in its proportion and orientation into the local pictorial structure of the existing building structure.
The non-basement, 2-storey building with a build-up area of 183 m² was made accessible in passive house standard as well as barrier-free over all rooms. The entire building was constructed in timber, which is composed of ecological materials like construction wood from the region, cellulose insulation, wood fibre insulation boards, as well as a facade of local silver fir. These ecological building materials are found throughout the interior again.
Even in outer space the emphasis was on the use of regional materials.
Energy and Ecology The heating with district heating connection is replaced by the heat pump of the adjacent fire station. The hot water production is decentralized due to the low demand with floor-mounted boilers. The quality of the indoor air ensures controlled ventilation. The electricity required for the technical infrastructure is generated by a photovoltaic system on the adjacent fire station, so that over the year, almost as much energy can be generated as the municipality office and the fire station need.
A comprehensive product management for using non-polluting and low-emission building products and materials, as well as led to the avoidance of HFC and PVC was carried out.
The building is located in the town center with a good reaching (by foot) of essential infrastructure.
Project CEC5 - Good practice booklet, Output 2.4.6 Page 5 Municipal building pass Process and design 200 of 200 possible points (ecological objectives, economy, product management)
Architecture The secondary school of Doren in Vorarlberg has undergone a comprehensive renovation. The building from 1974 was partially demolished and replaced by a new building.
The Silver Fir facade of the renovated building including the annex with the top-modern gym shines far above Doren. Many windows bring light into the building. The attractive exterior contains an interior decor that meets the modern technical requirements as well as the newest educational concepts.
A new educational concept required two open learning environments in each of the two floors. The floors are mainly made of wood, special rooms such as physics hall, kitchen and workroom were equipped with linoleum.
During the thermal rehabilitation the top floor ceilings were insulated with 15 or 20 cm EPS. The earth-adjacent floor is covered with a 5cm perlite fill and 45cm mineral fibre boards, the outer walls with a total of 24 cm wood fibre insulation boards in a ventilated timber frame construction. In the roof area, the flat roof with 25 cm EPS is additionally insulated. In the ventilated pitched roof the glass wool was replaced by EPS and supplemented with a further 10 cm EPS layer. The existing windows were replaced by wood-aluminium heat-proof windows. In addition exterior shutters including daylight-dependent control to reduce the cooling load, are installed.
Energy and Ecology During the rehabilitation, a controlled ventilation system with seven central ventilation controls was installed in the building. The new system ensures an optimum indoor air and perfect learning environment. The heat supply was switched from the existing oil boiler to a wood chip heating. The existing circulation pumps were replaced by variable speed control high-efficiency pumps. To increase the electrical energy efficiency, the lighting system is optimized in which the presence detector, electronic ballasts and energy saving lamps are installed. In addition, a 550m² - photovoltaic system with a peak power of 98.82 kW was built.