PROJECT PARTNERS Green Initiative for energy efficient …ec.europa.eu/energy/intelligent/projects/sites/iee-projects/files/... · Green Initiative for energy efficient eco-products

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: [email protected]

Centre Scientifique et Technique du Bâtiment. Contact person: Daniel Quenard

Avenue Jean Jaures, 84, 77447, Champs sur Marne/Marne la Vallée, France


Building Research Establishment. Contact person: Stephen Garvin

Scottish Enterprise Technology Park, East Kilbride, Glasgow G75 0RZ, United Kingdom


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: [email protected]

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: [email protected] or [email protected]

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: [email protected]

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: [email protected]

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: [email protected]

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: [email protected]

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: [email protected]

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


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


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.


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.


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.


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


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)


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, * [email protected])

Centre for Renewable Energy Sources

19th km Marathonos Ave.

19009, Pikermi, Greece

)


EXAMPLE FROM THE E2PILOT DATABASE


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.


Elpida Polychroni (Tel 210 6603258, [email protected])


19th km Marathonos Ave. 19009, Pikermi, Greece


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.)


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 %







2 %

3 %

4 %

5 %


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.


Elpida Polychroni (( 210 6603258, * [email protected])


19th km Marathonos Ave.

19009, Pikermi, Greece


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


Technology: 4000 SERIES - specialist venetian blinds with slats of heat treated

aluminium that are double stove enamelled. Variety of control options



Technology: ALUMINIUM AEROFOIL FINS - extruded aluminium sections.

The system is non-retractable and can be fixed or adjustable




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.


PROJECT PARTNERS Green Initiative for energy efficient …ec.europa.eu/energy/intelligent/projects/sites/iee-projects/files/... · Green Initiative for energy efficient eco-products

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