Post on 25-Apr-2018
Green Initiative forenergy efficient eco-products in theconstruction industry
PROJECT PARTNERS
Centre for Renewable Energy Sources (coordinator). Contact person: Elpida Polychroni
19th km Marathonos Avenue, 19009, Pikermi, GREECE
Tel: +30 210 6603258, Fax: +30 210 6603305, Email: epoli@cres.gr
Centre Scientifique et Technique du Bâtiment. Contact person: Daniel Quenard
Avenue Jean Jaures, 84, 77447, Champs sur Marne/Marne la Vallée, France
Tel: +33 4 76762546, Fax: +33 4 76762560, Email: quenard@cstb.fr
Building Research Establishment. Contact person: Stephen Garvin
Scottish Enterprise Technology Park, East Kilbride, Glasgow G75 0RZ, United Kingdom
Tel: +44 1355 576200, Fax: +44 1355 576210, Email: eastkilbride@bre.co.uk
Danish Building Research Institute. Contact person: Klaus Hansen
Dr. Neergaards Vej 15, 2970 Hørsholm, Denmark
Tel:+45 4586 5533, Fax: +45 4586 7535, E-mail: klh@sbi.dk
Cenergia Energy Consultants. Contact person: Peder Vejsig Pedersen or Vickie Aagesen
Herlev Hovedgade 195, 2730 Herlev, Denmark
Tel: +45 44660099 Fax: +45 44660136, E-mail: pvp@cenergia.dk or vaa@cenergia.dk
Narodowa Agencja Poszanowania Energii S.A. Contact person: Marek Amrozy
Filtrowa 1, 00-611, Warszawa, Poland
Tel: +48 22 825 5285, Fax: +48 22 825 8670, E-mail: mamrozy@nape.pl
National Institute of Engineering Technology and Innovation. Contact person: Helder Gonçalves
Estrada do Paço do Lumiar nº 22, 1648-038, Lisboa, Portugal
Tel. +351 210 924 666, Fax. +351 217 127 195, E-mail: helder.goncalves@ineti.pt
VTT Technical Research Centre of Finland. Contact person: Ismo Heimonen
Vuorimiehentie 5, 02044 VTT, Espoo, Finland
Tel: +358 20 722 4907, Fax: +358 20 722 7054, E-mail: ismo.heimonen@vtt.fi
Ecofys Energie-und Handels gesellschaft mbH. Contact person: Sigrid Lindner
Eupener Straße 59, D-50933, Cologne, Germany
Tel: +49 (0)221-596973152, Fax: +49 (0)221-596973190, E-mail: s.lindner@ecofys.de
THE GREEN-IT PROJECT
THE BUILDING SECTOR plays an important role to reach
the European target to decrease CO2 emissions by at least
20% until 2020. At present, the European building stock
generates 40% of the total primary energy consumption.
Significant reductions of greenhouse gas emissions within
this sector can be achieved by energy saving measures in
existing buildings and improved energy efficiency of new
buildings following the European Energy Performance of
Buildings Directive (EPBD). In both cases, the thermal
performance of the building envelope plays an important
role.
THE GREEN-IT PROJECT supports the implementation of
the EPBD. It provides an upto date information source for
those responsible for construction works, particularly energy
and environmental properties. The initiative outlines the
characteristics of currently available products throughout
Europe, which contribute to the energy performance of
buildings.
GIVING AN OVERVIEW of construction products and their
specific properties, existing labels and construction
recommendations, the project is not aiming at inventing a
new label with particular product requirements. It is
designed to inform the target group of existing possibilities to
reach high standard building construction.
Characteristics of construction products concerning thermal
and environmental properties are being disseminated
through a European web based product catalogue
www.bre.co.uk/e2pilot. To improve awareness concerning
thermal performance of building products, an improved and
independent access to certified data is being provided by the
database as well.
EU INFORMATION
EIE/05/024/SI2.419623
GREEN-IT
Green Initiative for energy efficient
eco-products in the construction industry
Intelligent Energy – Europe (IEE)
Type of action: 1
Key action: VKA4
Deliverable No14: Demonstration Catalogue
of eco labelled construction products
Due Submission Date: October 2008
Actual Submission Date: December 2008
Lead participant: Cenergia
Project coordinator name: Elpida Polychroni
Organisation: Centre for Renewable Energy
Sources
E-mail: epoli@cres.gr
Telephone number: 0030 210 66 03 258
Disclaimer: The sole responsibility for the content of the brochure lies with theauthors. It does not necessarily reflect the opinion of the European Communities.The European Commission is not responsible for any use that may be made ofthe information contained therein.
EnergiHæfte.2kor:Energi 25/02/09 13.49 Side 1
PRODUCT DATABASE
In the GREEN-IT project the focus is especially set on building components and
elements related to the climate shield of the building. Focus on this specific
issue was chosen to strengthen the impact of the project consciously aware that
there are several parameters involved in order to achieve an energy efficient
building than an optimised climate shield. An example of another significant pa-
rameter is the determination of a sustainable ventilation strategy.
The product list provides a complet presentation of the products represented on
the European market and their characteristics.
All products on the list are categorized according to 1 of the 5 product types/
relation from which some of the products appear in several of the 5 product
types/relations
THE 5 PRODUCT TYPES/RELATIONS:
Materials (except insulation materials) like bricks and concrete for which data
for the lambda-value are needed to calculate the required data for the energy
performance of the building elements (and joints) for which the construction
materials are intended for.
Insulation like mineral wool and polystyrene for which data for the lambda-value
or the R-value are needed to calculate the required data for the energy perfor-
mance for the building elements (and joints) for which the insulation materials
are intended for.
Components like components for whole layers (other than insulation) in outer
walls (e.g. lightweight concrete panels for cavity walls) or roofs for which data
for the R-value is needed to calculate the energy performance of complete buil-
dings. In this context, components do only include construction products for
which supplementary construction products are needed to construct the com-
plete building elements, and which can be denoted as a thermally homogeneous
layer.
Elements like components for whole outer walls or roofs for which data for the
U-value are needed to calculate the energy performance of complete buildings.
In this context, components do only include construction products for which sup-
plementary construction products are not needed to construct the building ele-
ments.
Windows (and glazing systems) are components for which data for the U-values
has to be completed with data for g-values to calculate the energy performance
of buildings.
The product database has
especially focus on providing the
following products:
Bricks and blocks
Building facades: aluminum and
glazing facades
Cladding technologies
Insulation
Prefabricated components
Timber frame systems
Windows
EnergiHæfte.2kor:Energi 25/02/09 13.49 Side 2
PRESENTATION OF THE PRODUCT DATABASE
The product database serves as a pilot database at the moment. The pilot
database is found through the link: www.bre.co.uk/e2pilot, but on the long term
the database will be accessible on the link: www.green-it.eu.
The bioclimatic and low energy
office building of CRES, Pikermi
Greece.
The website www.bre.co.uk/e2pilot
EnergiHæfte.2kor:Energi 25/02/09 13.49 Side 3
ENERGY EFFICIENT DESIGN
Energy efficient design consists of several aspects than only selection of the best
building components and building elements on the market. In an energy efficient
optimal projecting, consideration has to be made to several aspects, such as the
geographic situation, utilisation and placement of the building in relation to the
corners of the world etc. This might lead to the result that the most valuable
building components or element are not necessarily the most suitable solution
in the actual situation.
An example of this could be an extra insulation of a building. An extra insulation
might often only be advantageous to a certain thickness of the insulation, which
is due to the fact than the earnings are not linearly growing in accordance with
the additional thickness of the insulation. Besides the economic aspects to be
considered, environmental aspects also have to be taken into consideration as
insulation in terms of energy is expensive to fabricate. That is why it is also im-
portant to compare the energy consumption for the production to the energy
consumption for the working period of the entire building.
An opportunity to get a more overall view of a building could be to use the pro-
gram “Green Build” which was developed within the EU-project Green Catalo-
gue.
"Green Build" is an energy and environmental rating system for urban develop-
ment areas and buildings with focus on the use of healthy and sustainable buil-
ding materials and optimisation of heat, electricity and water consumption,
energy supply, indoor climate and waste treatment as well.
The program is found on the website: www.greenglobal21.com.
PASSIVE HOUSE COMPONENTS FOR THE ENVELOPE
In table 1 Recommended maximum U-value for passive house components, the
recommended minimum values for passive house components for building en-
velope are presented. The recommended values originate from the German pas-
sive house website. It is important to be aware that a building does not
automatically become a passive house by using only the recommended mini-
mum values. But it is a combination of using the minimum values and improved
values. But also the fact is that a building needs more than a good climate shield
to achieve an energy use for heating below 15 kWh/m2*year, which is the requi-
rement for passive houses.
EnergiHæfte.2kor:Energi 25/02/09 13.49 Side 4
Table 1 Recommended maximum U-value for passive house components (www.greencatalogue.com)
TECHNOLOGY
Insulation
Air Tight Constructions
Energy Windows
RELEVANT INDICATORS
U-value [W/m²K]
External Wall:Roof:Floor (ground/ unheated rooms)
Average air changefrom leakage:
U-value [W/m2K],
Glass:Frame:Window:
PERFORMANCE REQUIREMENTS
0,150,150,15
Max. natural air change 0,03 /h. 0,6 /h at +/- 50 Pa (ISOstandard, Blower Doortest).
0,80,80,8
CHECK SYSTEMS
Blower door test +/-50Pa.Leak detection bysmoke test.Pressure test.
PrEN 141351
Villa Langenkamp, Olav Langenkamp, Ebeltoft, Denmark. The first certified passive house in DK.
EnergiHæfte.2kor:Energi 25/02/09 13.49 Side 5
ENERGY EFFICIENT INITIATIVES Examples of energy efficient initiatives
SOLAR CELLS AND SOLAR COLLECTORS
By using solar cells and solar collectors the climate shield can be made an active
contributing to reduce the external energy consumption of the building. Solar
cells and solar collectors also have that advantage that they producing energy
from at renewable source.
Solar cells, Dalgasparken, Herning Denmark
The ven
building
A discre
apartme
Solar collectors Solengen, Hillerød Denmark
Energy windows at Rønnebækhave II, Denmark
Blower Door test in an
apartment
Window from Optiwin
U-value [W/m2K]
Glass: < 0,8
Frame: < 0,8
G-value: ≥ 50 %
AIRTIGHT CONSTRUCTIONS
There are several reasons, why an airtight im-
plementation of the building envelope is very im-
portant: reduction of heating demand, comfort
and prevention of structural damages.
To ensure an air tight building envelope, moi-
sture brakes or even moisture barriers are at-
tached in order to prevent humidity to penetrate
the construction and the thermal insulation. It
is very important, that these foils are fixed very
accurately, otherwise they do not have any ef-
fect.
To guarantee a construction without any leaks
it is recommended to develop a leak tightness
concept and to locate weak points in the envel-
ope by a so-called Blower-Door-Test.
For passive houses the air change is not allo-
wed to be larger than 0,6 l/s.
ENERGY WINDOWS
What characterises windows in pas-
sive houses is that they are mounted
deeply in the facade. This is a result
of minimizing the thermal bridge bet-
ween the window and wall.
EnergiHæfte.2kor:Energi 25/02/09 13.49 Side 6
The passive house standard requires an energy consumption that does not ex-
ceed 15 kWh/m2*year – it is not possible to reach this level by optimising the
outer climate shield only. This is due to a great loss of heat from the ventilation
which contributes to ensure a healthy and good indoor climate. This contributes
to make heat recovery of the ventilation an inevitable issue. One of the significiant
challenges in this relation is to get the set and the channels integrated, in order
to make them a natural part of the other furniture of the housing.
HEAT RECOVERY VENTILATION WITH LOW
ELECTRICITY USE
Electricity consumption [Wh/m3]:
Electricity, temperature and noise monitoring) ≥ 0,45
Heat recovery efficiency: 87%
Noise level: ≥ 25 dB(A)
Picture x Ventilation unit from EcoVent
IMPLANTATION OF THE VENTILATION SYSTEM
Only 220 mm thick EcoVent ventilation units with heat recovery have been used
in Solengen, theses are placed in the partition wall between the hall and bath-
room. As kitchen and bathroom is placed next to eachother the major part of the
channel system is shown on the picture.
Denmark
The ventilation system in the low energy
buildings in Solengen, Hillerrød Denmark
A discreet air canal in the kitchen of an
apartment, Gyldenrisparken, Denmark
Soltag CO2 neutral apartment unit which can be placed on existing buildings.
www.soltag.net
Denmark
II, Denmark
EnergiHæfte.2kor:Energi 25/02/09 13.49 Side 7
CLIMATE SHIELD
The optimal climate shield is characterised to be insulated, dense and made of
a material adapted to the environment concerned as regards durability and wear
and tear. Besides the two important criteria, the climate shield can contribute
with several positivities that might for instance contribute to lowering the energy
consumption of the building and improvement of the indoor climate. As exam-
ples can be mentioned solar cells, sun collectors the use of heavy materials
(materials with high heating capacity) materials added phase shifting material,
thermal walls, double facades etc. Common for the different solutions is that
their effectiveness is dependent upon different parameters which do not make
it possible to choose one solution from another as the ultimate.
The U-value for the climate shield does differ dependent of country. The reason
for this is anchored in the national style of building and climate as well. In the EU
project Green Catalogue an examination of the variation of the common use of
U-values for the building was made. In the following table a presentation of the
results from the examination regarding the climate shield is shown. For a more
detailed description of the results see the website www.greencatalogue.com.
U-value [W/m²K]
External Wall:
Roof:
Floor
(ground/ unheated
rooms):
EnEV
Passivhaus-Institut
SAP RATING
Building Regs
STYROFOAM
NBE-CT 79; UNE
92115/97 for XPS
(extruded)
Stamp INCE-AENOR
(www.dow.com)
BAT
(Best Available
Technology)
I: 0,08-0,2
II: 0,08-0,3
III: 0,1-0,35
I: 0,08-0,12
II:0,08-0,2
III: 0,1-0,4
I: 0,08-0,18
II: 0,08-0,3
III: 0,12-1,2
Goal for next
EPBD in 2011
I: 0,1-0,6
II: 0,11-0,4
III: 0,1
I: 0,08-0,6
II: 0,11-0,2
III: 0,08-0,1
I: 0,09-0,6
II: 0,15-0,4
III: 0,1
2008
I: 0,15-0,6
II: 0,15-0,45
III: 0,15-0,7
I: 0,1-0,6
II: 0,1-0,25
III: 0,1-0,5
I: 0,12-0,6
II: 0,15-0,45
III: 0,2-2
PERFORMANCE REQUIREMENTS CHECK SYSTEMS AND
STANDARDS
RELEVANT INDICATORS
Etrium, Köln Germany
(Energy efficient + Atrium = Etrium)
EnergiHæfte.2kor:Energi 25/02/09 13.49 Side 8
PRODUCT FORM: CERAMIC BRICK
The given product information will be checked, appro-
ved and released on the web based European product
catalogue through the consortium of the GREEN-IT
partners.
Please send the signed submission form to:
Elpida Polychroni (( 210 6603258, * epoli@cres.gr)
Centre for Renewable Energy Sources
19th km Marathonos Ave.
19009, Pikermi, Greece
)
EnergiHæfte.2kor:Energi 25/02/09 13.49 Side 9
WINDOWSSimilar to the insulation of the external wall, roof and floor, the insulation of windows has a big impact
on the thermal protection of a building. Although the development during the last years is characterised
by a considerable improvement of the energetic quality, windows still have the poorest insulation of all
external building components.
The reduction of the thermal transfer of windows has been reached, especially the thermal properties of
the glazing, which has the highest impact on the heat losses, were improved.
Table 3 U-values for windows.
(Zone I: FI, UK, DK, Zone II: D, FR, AU and Zone III: GR, ES, IT, ES) (www.greencatalogue.com)
U-value [W/m²K] Total:
Glass:
Frame:
g-value [%]
Cold bridge coefficient
glass: ψ [W/mK]
Windows: DIN EN ISO
10077-1:2000-11;
DIN 4108-4
Passivhaus-Institut
FENSA
Glass:
DIN EN 673:2001-1;
DIN EN 410:1998-12
Cold bridge coefficient:
DIN EN 10211
+ DIN 4108-2
BAT
(Best Available
Technology)
I: 1,0-1,7
II: 0,6-1,2
III: 1,1-2,8
I:
II: 0,5-1,1
III:
I:
II: 0,64-1,07
III:
I:
II: 50-58
III: 55-58
I:
II: 0,017-0,022
III: 0,0-0,65
Goal for next
EPBD in 2011
I: 1,0-1,8
II: 0,5-1,2
III: 2,8
I:
II: 0,4-1,1
III:
I:
II: 0,75-1,3
III:
I:
II: 25-67
III:
I:
II: 0,034
III:
2008
I: 1,0-1,8
II: 0,8-1,5
III: 1,1-3,2
I:
II: 0,5-1,2
III:
I:
II: 0,85-1,5
III:
I:
II: 60-71
III: 58
I:
II: 0,06
III:
PERFORMANCE REQUIREMENTS CHECK SYSTEMS AND
STANDARDS
RELEVANT INDICATORS
The given product information will be checked, approved and released on the web based
European product catalogue through the consortium of the GREEN-IT partners.
Please send the signed submission form to:
Elpida Polychroni (Tel 210 6603258, epoli@cres.gr)
Centre for Renewable Energy Sources
19th km Marathonos Ave. 19009, Pikermi, Greece
EnergiHæfte.2kor:Energi 25/02/09 13.49 Side 11
OPERATIONAL PROJECTING OF WINDOWS
An appropriate projecting of windows involves an analysis of the potentials of the place and challenges and into
which architectural context the window must enter. The required qualities for a window will vary between climate
zones and legislative requirements of the country as well.
In the Northern European areas an operational projecting of windows is to achieve a balance between the dimen-
sion and placement of the window in order to obtain optimal daylight incident contributing to minimise the need
for electricity lighting and the heat loss to the surroundings.
An average daylight percentage on 2% or less at a working place will call for a supplement of artificial light to
achieve sufficient daylight.
An average daylight percentage of 5% or more will be characterised as light and well lighted and will rarely need
artificial light. In side lighted room the daylight factor is influenced by the following:
The proportion of the room i.e. the distance between the height of the highest window frame and the depth
of the room. A high placement of the window allow the daylight to enter deep into the room, ensuring a more
uniform distribution
The glass party of the facade – i.e. the proportion between the glass areal and the facade areal of the room.
The larger the glass part is the better the daylight will enter the room.
Type of glass: Different glass combinations or types of panes all have different light transmitters
Daylight incident at different parapet heights
In diagram 1 is shown the dimension between proportions of a side lighted room, the glass part of the facade, type
of glass in the window and the average daylight factor of the room in table height. The diagram applies for buildings
up to three floors with a distance to the surrounding buildings of at least two times the height to the drip moulding.
The diagram shows e.g. how extensive the glass part of the facade has to be for a room with a certain height/depth
proportions to achieve average daylight factor. It is seen, that in cases where the windows are leading to the floor
with a glass part of 70% or more of the area of the facade, the daylight advantages of these extra glass areas are
extremely limited. (Source: Rob Marsh (2006) “Arkitektur og energi” ISBN 87-563-1286-5.)
EnergiHæfte.2kor:Energi 25/02/09 13.49 Side 12
Relation between height / depth proportion and glass areal of the
facade for a side lighted room compared to the average daylight
factor in table height:
Th
e g
las
s a
rea
of
the
fa
ca
de
as
a p
erc
en
t o
f th
e f
aca
de
are
a %
T
he
ro
om
s h
eig
ht/
de
pth
-pro
po
rtio
ns
%
Diagram 1 Possible Window solutions
The diagram is used for assessment, whether a room
at a height/depth proportion of 50% and 3-layer energy
panes demands a glass part of 35% of the facade areal
to obtain an average daylight factor of 5%
GLASS TYPE:
Windows with 2-layer energy panes.
Light transmittance 80 %
Windows with 3-layer energy panes.
Light transmittance 70 %
Windows with 2-layer energy panes.
Light transmittance 51 %
Windows with 3-layer energy panes.
Light transmittance 45 %
2 %
3 %
4 %
5 %
EnergiHæfte.2kor:Energi 25/02/09 13.49 Side 13
EXAMPLE ON WINDOW FROM THE E2PILOT DATABASE
The given product information will be checked, approved and released on the web based European product catalogue
through the consortium of the GREEN-IT partners.
Please send the signed submission form to:
Elpida Polychroni (( 210 6603258, * epoli@cres.gr)
Centre for Renewable Energy Sources
19th km Marathonos Ave.
19009, Pikermi, Greece
EnergiHæfte.2kor:Energi 25/02/09 13.49 Side 14
SUN SCREENING A way to minimise overheating and direct sunprotecting is to use solar scre-
ening. There are several solutions to choose from. The different kind of solutions
has their advantages and quality to the operational and aesthetic issue.
The following examples are taken from the e2pilot database.
Technology: SOLAR C - fixed external solar shading system consisting
of metal louvers
Company: Colt International Ltd
Relevant Indicators: Reduction in solar; heat gain and sun glare
Technology: GLASS FINS - suited to modern low energy buildings and provide
occupants a greater view to the outside
Company: Levolux Limited
Relevant Indicators: Reduction in solar; heat gain and sun glare
Technology: 4000 SERIES - specialist venetian blinds with slats of heat treated
aluminium that are double stove enamelled. Variety of control options
Company: Levolux Limited
Relevant Indicators: Reduction in solar; heat gain and sun glare
Technology: ALUMINIUM AEROFOIL FINS - extruded aluminium sections.
The system is non-retractable and can be fixed or adjustable
Company: Levolux Limited
Relevant Indicators: Reduction in solar; heat gain and sun glare
EnergiHæfte.2kor:Energi 25/02/09 13.49 Side 15
PRODUCT APPLICATION
DATA SUBMISSION FORM
Manufacturers wishing to submit product information to the database should
initially state their intention by signing the acceptance of terms and conditions
described in the scheme document. Product information can then be submitted
through the electronic form which can be downloaded from the page
www.bre.co.uk/e2pilot. The completed form should then be passed to the Na-
tional coordinator for initial appraisal. If all information is correct, the National
coordinator will ask the manufacturer to provide documented evidence of the
product's performance as per mandatory requirements.
Once these documents have been submitted and verified, the product
will get a position in the database. The manufacturer will then receive informa-
tion on how to identify their product in the database.
Solar XXI, Portugal.
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