AVASH – Advanced Ventilation Approaches for Social Housing 2006-
The purpose of the project is to clarify the conditions of ventilation in connection with the retrofit of the existing housing stock, and list guidelines on how to secure an efficient and economically attractive ventilation. Typically an energy retrofit includes reinsulation and tightening of the building envelope which may cause changed ventilation and indoor climate conditions and result in damage on the building and cause inconveniences for the tenants.
The project includes a check of the standard of energy for representative types of buildings. The check is carried out in England, Ireland and Denmark and includes several check tests of the insulation condition of the building envelope and airtightness.
On basis of the building checks a number of suggestions are listed for solutions as regards energy efficient ventilation for selected types of buildings. Various ventilation solutions will be considered such as mechanical exhaust with heat recovery, natural ventilation, solutions regarding windows with inlet air together with the degree of tightness of the building envelope.
Emphasise is placed on the presentation of the result which takes place via guidelines, reports, articles and various presentations at relevant seminars and conferences.
Supported by: The EU project, Intelligent Energy – Europe (IEE).
Co-ordinator: University of Brighton, Dr. Ryan Southhall
Factor4 2006-
Cenergia participates in the EU-project – Fakor 4 in connection with the programme ”Intelligent Energy of Europe”, the aim of which is to illustrate the energy measures required in order to reduce the CO2 leaks in council housing stock in year 2050 by 75%. In the project a typology is defined which divide the existing housing stock according to conditions which are important for the yield of the buildings as regards energy. Three representative housing blocks are tested and various improvements are considered to give a comprehensive economic consideration which will form the basis of an estimate of the potential economy.
EI-Education 2006-
The EU project EI-Education; Energy Intelligent Education – aim at preparing a teaching programme for the housing associations in order to motivate and give instructions regarding energy optimised retrofit.
The teaching programme is based on the European “best practice” examples and this, together with a survey of practical solutions and a check list, will be collected in a Guidebook.
GreenIT 2006-
An R&D project on Eco Labelling of products and construction materials in relation to the EU-Energy Performance Directive for Buildings. From Denmark the energy specialist company Cenergia participates as well as the Danish Building Research Institute, (SBi). Further participants are the companies CSTB from France, BRE from the UK, CRES from Greece, ENETI from Portugal and Ecofys from Germany.
UpperTen 2006
The UpperTen project consists of 11 new single-storey houses which are to be built in the Trekroner area in Roskilde. The houses are built as single-storey as well as two-storey houses and are very special partly because of their architecture and partly because of an extremely low energy consumption. Almost all of the houses are built according to the low energy class 1. They are inclusive of solar energy, heat pump and ventilation with heat recovery. Further they come with Nordic Eco Labelling, (Swan labelling), and are built with “green” materials.
Ullerødbyen, Hillerød 2006
Low-energy building project and innovative heat supply
With optimisation of the energy supply to the new neighbourhood Ullerødbyen in Hillerød with focus on the extension of the district heating solutions with least possible losses.
The project was started in connection with the new low energy standards 1 and 2 with respectively 50% and 25% improvements as compared to the level of the building regulations. Future low energy building projects will have a much lower heating consumption than the existing housing stock, and just now work is carried out concerning combined solutions for low energy housing projects and innovative heat supply solutions, including local and individual heat solutions.
Supported by: The project EU-Secure
Partner: El, Vand og Varme in Hillerød
Stenløse Syd 2005
The Stenløse Municipality has decided to require that henceforth all housing projects should be constructed as low energy houses. The demand is formulated as a registered easement in connection with the sale of building lots. From the early start the building process has to be evaluated on a whole and this requires a co-operation between the single participant. The total experience of the project will be disseminated through an EFP-project which is a project supported by the Danish Energy Agency in the programme for Energy-Research-Programme 2005.
Website: www.stenlosesyd.dk
Solar City Horsens 2005 -
A project inspired by the company Solar City Copenhagen. Total energy plan, planning and organisation of a number of renovation projects where the implementation of PV-modules is an integrated part. Including the establishment of a formal partnership agreements, further development and test of full scale PV-module test roofs, development of test houses for energy class 1 and 2, and preparation of a total Solar City Horsens brochure.
Solcellelaug (PV Guild) 2005 -
The procedure for a PV Guild is similar to a windmill guild.
The PV Guild was founded in connection with the company Solar City Copenhagen and is named “Copenhagen PV Guild”. In co-operation with Copenhagen Energy a PV exchange was established where private citizens and companies can buy solar power at a price fixed in advance.
On the basis of this the PV Guild is in a position to establish PV units taking into consideration production price, price of unit and operation costs.
For additional information see www.solcellelauget.dk.
Solceller KMEK (PV-modules KMEK) 2005
The Energy Service Denmark has effected the implementation of three PV units in Norrebro: 22 m² on the roof of the cafeteria of Assistens cemetery, 31,9 m² on the roof of the World Cultural Centre, (previously the culture centre in Norreallé), and 14,7 m² on the roof of the Okologihuset in Blegdamsvej (Environmental House)
These PV units make renewable energy very visible in the townscape.
Supported by: The EU-Resurgence, the Sol1000 programme and Copenhagen Municipality
Builder: Copenhagen Municipality
BESTCert 2004 -
The EU project ”Building Energy Standards – Tool for Certification” – BESTCert deals with the development of a certification tool.
The development of a labelling or certificate tool with a starting point in benchmarks will be able to handle EPBD.
Five countries participate and the participants for each country have chosen a school and a reference building for registration of data to be used in the project.
In connection with the BESTCert project a website has been prepared: www.bygningsenergi.dk, which deals with the Danish implementation of the European Energy Performance of Buildings Directive (EPBD).
CO2 neutral tagboliger (CO2 neutral rooftop dwelling) 2004 -
In co-operation with a number of companies Cenergia has participated in the development of the so-called CO2 neutral rooftop dwelling concept.
The vision for the rooftop dwelling is based on the retrofit of concrete buildings from the sixties and seventies, buildings which typically now have problems with flat roofs. The rooftop dwelling has been designed according to environmentally desirable and energy efficient principles such as hybrid ventilation, heat recovery, passive solar heat, PV-modules and solar collectors. The rooftop dwelling is prefabricated in wood assembly units which make transportation and installation on a roof easy. The concept has a wide perspective in relation to a qualitative development of problem residential areas and at the same time a future perspective in being CO2 neutral.
Solceller & Arkitektur (PV-modules & Architecture) 2004 -
Focus on the architectural integration of PV units on building facades.
E.g. with issued catalogue for inspiration and with advice and presentation of existing obvious possibilities.
A part of the large PV project for Valby New School where a new type of liquid cooled PV modules are developed and where PV modules are installed as part of an artistic decoration on the gable.
Also supports Solar City Copenhagen. (www.solarcity.dk).
SOLAR-CITIES 2002 - 2004
In the EU-project Solar-Cities the aim is to disseminate knowledge of how it will be possible for the various cities to reduce their CO2 level.
Emphasis on use of renewable energy initiatives and better utilisation of energy. Information on existing projects are gathered in a “Good practice guide” which will help the various cities to utilise the existing environmental measures (technologies).
Folehaven, Valby 2001-2004
In connection with the building of an eco-laundry 41 m² PV unit was integrated on the roof and on the gable.
The aim of the project was to develop a new principle for combined electricity and heat utilisation of PV modules.
In this connection an important part of the project was to develop a building integrated PV design with combined heat and electricity production where PV modules supply heat to a building by help of ventilation air.
Supported by: The Danish Energy Agency
Builder: 3B
Architect: Klaus Boyer Rasmussen, SolarVent
Resurgence 2003 -
The EU-project ”Renewable Energy Systems for Urban Regeneration in Cities of Europe”, Resurgence. The aim of this project is to install a total of 1,3 MWp PV-modules in five European countries.
In Denmark 390,16 kWp PV-modules have been installed.
The aim of the project was to ascertain that the installation should take place within the area of social sustainability and with an investigation of the liberalised electricity market with a view to the possibility of financial innovation.
In Denmark a wide range of PV projects were realised, among these the SOL-1000 project which has offered easily installed PV units with financial support to tenants of one-family houses. 178 dwellings have had the PV unit installed with a total of 327 kWp.
DEMOHOUSE 2003-
With focus on energy optimisation of retrofit projects, e.g. regarding the new EU countries, the EU-project DEMOHOUSE has been launched in order to develop minimum standards, recommendations and agreements on quality.
The contents of the project are pilot projects in which experiences from R&D projects are going to be implemented. These experiences will then be tested on actual retrofit projects.
In the Danish project the experiences made from “the small house” as regards the development of the CO2 neutral rooftop dwelling.
The demonstration project is Gyldenrisparken in Amager.
BRITA in PuBs 2003
»Bringing Retrofit Innovation to Application in Public Buildings
"BRITA in PuBs"« is an EU-project which deals with innovative and efficient retrofit solutions for the improvement of energy efficiency and implementation of renewable energy sources.
The project brings into focus pilot projects for sustainable energy systems in public buildings and further the requirements for project planning and the possibilities of alternative finansiation.
The general idea is that it is possible to further comfort and at the same time save energy in large buildings.
Nine countries are participating in the project, and in Denmark the retrofit of Prøvehallen in Valby is part of the project.
Studenterhuset Herning 2003
The combination of two PV solutions: Development and test of sunlight protection with integrated PV-modules a total of 6 kWp, 25 m² sunlight protection together with 35 m² PV modules on consoles, (E-consoles) on a flat roof.
Supported by: The Danish Energy Agency
Bygherre: Fruehøjgård Housing Association
Architect: A2 Tegnestuen
Cirkusbygningen, Valby 2003
Two different PV fit in solutions adapted for tar paper roofs. The tests are part of a large PV-project in Valby, Copenhagen, and is the basis for a larger installation on the Circus Building.
Supported by: The Danish Energy Agency, EU-Resurgence
Builder: Cenergia
Architect: Klaus Boyer Rasmussen, SolarVent
CO2 neutralt forsøgshus (CO2 neutral test house) 2001-2004
In co-operation with a number of companies Cenergia has developed a 32 m², low energy, wooden test house. The house is a successful test house for the demonstration of the so-called “passive house” concept.
The house is insulated with paper granulate, is completely airtight and without cold bridges. The house was tested with Cenergia’s “Blower Door ” just as it was thermo photographed. The blower door test did not show any measurable values and this shows that the house was without cold bridges.
The roof is equipped with integrated PV-modules which make the house CO2 neutral. The electricity produced on a yearly basis will cover the energy consumption.
ESPON 2003
With the subtitle "Territorial trends of energy services and networks and territorial impact of EU energy policy" is an EU-project which dealt with trends within energy supply and requirements for energy supply. Using data collection the relation between energy supply and the general development of a given area was explained, and it was established which of the regions were influenced the most of minor changes within the area of energy.
The project investigated all EU countries as well as Switzerland and Norway, but was managed by a co-operation between Denmark, Italy, Portugal and Poland.
IEA ECBCS Annex 36
A part of the project of the International Energy Agency ”Energy Conservation in Buildings and Community System Programme (ECBCS) is “Annex 36: Retrofitting of Educational Buildings – REDUCE, Energy Concept Adviser for Technical Retrofit Measures”.
Among other things the project resulted in the publishing of a book the contents of which go through the case studies of retrofit of schools and institutions where energy saving initiatives were implemented.
Cenergia was editor on the book. Further, in connection with the project, an ”energy concept advisor” for energy optimised retrofit was prepared.
Futura II, Fredericia 2000 - 2002
Energy efficient heat distribution.
In the building Futura II in Fredericia a new principle for heat distribution has been demonstrated. The heat is distributed to the dwellings by use of domestic water circulation.
The advantages are a lower heat loos and less expensive initial costs compared to more traditional distribution principles.
The supply is suitable for future low energy building projects because the heat flow rate for new dwellings becomes still lower.
Further it will be possible to adapt the system to a regular industrialised heating system for dwellings.
Supported by: The Danish Ministry of Economic and Business Affairs
Builder: The Housing Association Futura v/Dansk Boligselskab
Kina 2002 - 2003
Exchange of knowledge, passive solar heating, energy optimisation.
Supported by the World Bank Cenergia entered into a project of development in a consultative capacity. With an exchange of knowledge the aim of the project was to further energy optimised building by use of passive solar heating, additional insulation and quality check for the duration of the building project.
Using this procedure it was possible to avoid the traditional heating by coal. A total of 58 projects in each of the three provinces, Gansu, Qinghai and Shanxi, were implemented.
Cenergia acted in a consultative capapcity in the first six projects in each province, whereupon the experiences from these first projects were carried on.
Supported by: The World Bank
Bæredygtighed i lokalplaner (Sustainability in community development plans). 2000 - 2002
With means from the Urban Pool the National Agency for Enterprise and Construction has supported the preparation of the brochure “Sustainability in community development plans – Idea and Introduction to a debate”.
The brochure applies primarily to building departments in small municipalities which administer the preparation of community development plans which try to implement sustainable aspects.
In this project the Bycirklen (City Circle) participated, the City Circle involves a co-operation between 9 small municipalities.
Using this project as a tool the sustainability concept was integrated and the technical / economic basis for sustainable technologies and implementations was incorporated and documented.
On basis of this the guidelines for method and administration for implementation of sustainable aspects in the community plans have been carried out. Builders could also use this as an inspiration.
Solcelleværk Valby (Solar Works Valby) 1999 - 2002
In a co-operation between Cenergia, Kuben Urban Renewal Denmark, Copenhagen Energy and Copenhagen Municipality a plan for 25% coverage of the electricity consumption in Valby has been launched.
The coverage comes from building integrated PV-modules with a total of 100.000 m² PV-modules.
The preproject was supported by the Danish Energy Agency and the National Agency for Enterprise and Construction (NAEC).
PV-Optitag 1 + 2 2001 -
R&D project with development and testing of optimised building integrated PV solutions with possibility of combined PV and thermal use.
In connection with the PV project in Valby, Copenhagen, a number of tests are being carried out involving combined PV and heat pump operations where liquid cooled PV modules connected to a heat pump can use the heat generated in the PV-modules and thus optimise the electricity production of the PV.
InSolPlan 2001 -
An EU Altener project which also obtained support from the Danish Energy Authority. The project title is: ”Solar Development of New Residential Areas – An European Competition for Sustainable Bulding”.
In Denmark an architectural competition was launched for the Trekroner area in Roskilde. Cenergia was involved in specifying the general outline / demands for the competition.
These were e.g. demands for the CO2 emission by use of buildings, innovative technologies and concepts, average insolation of minimum 80%. A minimum of 30% of room heating should be covered by passive solar use, and further that the average ratio between surface area and the volume of the building is less or equal to 0,5 per m².
100RESCO 2000 - 2001
The poject deals with the possibility of integrating a 100% coverage of the energy consumption with renewable energy in small local communities. Inherent in the project is a number of pilot tests which will be analysed in order to name the possibilities and prevailing conditions which will have a possible influence on the integration of renewable energy. In order to transfer the results to similar small communities in Europe each of the tested areas will be classified according to their status for energy consumption, socio economic conditions, climate and natural resources. From Denmark Læsø and Stenløse were chosen as pilot projects.
Roskilde Bank 2001
In this project the technology used in connection with the ventilation towers in Lineagården and Trekanten, both in Frederiksberg, was developed for commercial building, primarily with ventilation of office buildings in mind. Here it was necessary to change the design thus making it architectural and functionally possible to adapt it to a building project with a flat roof. Therefore, the ventilation towers were amended to “chimneys” where the chimney facing south is made of perforated metal plates and mounted with PV-modules. The perforated metal plate functions as air solar collector which will warm up the ventilation air with heat from the PV-modules.
PV-Vent 2001
The EU-project PV-Vent deals with the development of a low energy ventilation concept where PV-modules in combination with heat recovery result in improved indoor air climate in new built as well as in connection with retrofit. The electricity generated by the PV-modules operates the ventilation which use heat recovery and where inlet air is preheated below the PV-modules. By direct use of the produced electricity for ventilation it was not necessary to convert the current and losses could be avoided. Further the project focuses on the architectural integration of the PV-modules on the building facade.
PV-Optitag 1 + 2 2001-
R&D project with development and testing of optimised building integrated PV solutions with possibility of combined PV and thermal use. In connection with the PV project in Valby, Copenhagen, a number of tests are being carried out involving combined PV and heat pump operations where liquid cooled PV modules connected to a heat pump can use the heat generated in the PV-modules and thus optimise the electricity production of the PV.
Synpack 2001
The EU-project ”Synergy Package Approach for Energy Optimised Building Renovation” deals with a combination of retrofit aspects for two specific projects in Copenhagen where extra insulation, installation of bathrooms, extension of rooftop dwellings, renovation of windows and improved indoor air climate with low energy ventilation were estimated using the Optibuild tool developed by Cenergia for total economic analysis.
PlaySun 1999 - 2001
In connection with the EU ALTENER II ”Playing With the Sun”-project: ”PlaySun” work was carried out as regards design of sections for children’s playgrounds all of which relates to renewable energy sources. The purpose of the project was to inform and teach children of the various possibilities for use of renewable energy through didactig games in the shape of playground systems. The project had two phases - one creative phase with focus on the possibilities in preference to actual implementation. Inherent in the second phase was the task to carry out the possibilities of renewable energy for play sections as well as general information on renewable energy for children and their families.
SAVE – Certificering 2000
For the duration of the SAVE II programme Cenergia worked with 4 partners from three countries concerning the development of certification systems for Greece and Italy on the basis of Danish and British systems. The certification should apply to office buildings as well as residential buildings with focus on energy sources, CO2 emissions, environmental conditions, water consumption, lifecycle estimations etc. In addition a method was prepared for the dissemination of certifications including a calculation tool for the identification of energy savings.
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