2. UniversitàdegliStudidiFirenze–DipartimentodiArchitettura(DIDA)
LaboratoriodiProgettazionedeiSistemiCostruttivi–AA2012/2013
TxPResearchUniFi–www.txpresearch.wordpress.com
DESIGN TARGETS
subtitle
The hypothesis of intervention was of a structure that will expand easily, be built easily
and will carry its own weight so it could be independent from the existing building and
so a light and modular structure.
We chose the ETFE pillow, 3-layer system with a substructure in steel.
This system allows us to control the environment under it, thus giving it extra LEED
points,
in its modularity an expansion can be considered from the beginning and it takes
minimum time to build as its mainly a prefabricated system
as well as giving it an architectural edge from the form we can give it and potentially
making it another interest point.
TARGET
ETFE 3 LAYER CUSHION→ MODULAR EXPANSION
Main issues we are addressing are:
1. The limited areas of expansion
2. The limited area per passenger
4. UniversitàdegliStudidiFirenze–DipartimentodiArchitettura(DIDA)
LaboratoriodiProgettazionedeiSistemiCostruttivi–AA2012/2013
TxPResearchUniFi–www.txpresearch.wordpress.com
ENVELOPE TECHNOLOGIES
ETFE
ETFE performance
many
the manufacture of the ETFE foils.
aße 15 83313 Siegsdorf Germany
T-foils of different thicknesses.
by Nowofol and other components delivers them
*Airports: Gatwick, UK
*Hospitals: Chelsea Hospital, London, UK
*Kindergarten: Plappersnut, Wismar, Germany
*Schools: Geschwister-Scholl-Gymnasium, Waldkirch, Germany
*Office buildings: Festo, Esslingen, Germany
*Exhibitions: Mobile Chanel Pavilion
Property Unit Average values Test methods
Melting range °C 265 + 10 ASTM D 4591-07
Weight g/m2 350 DIN EN ISO 2286-2
Tensile strength MPa > 40 DIN EN ISO 527-1
Tensile stress at 10
% strain1
MPa > 18 DIN EN ISO 527-1
Tensile strain at
break1
% > 300 DIN EN ISO 527-1
Tear resistance N/mm > 300 DIN 53 363
Weld strength N/mm2 " 33 DIN EN ISO 527-1
G-value 75±5 ISO 15099
U-value2 Winter
Summer
W/m2K 1.8±0.15
1.4±0.15
DIN EN 673
ISO 15099
Resistance to
weathering
no change in
mechanical
properties
no change in
mechanical
properties
ISO 4892-1
End of life phase
Re-use: Aluminium lid and base profiles can be reused for reconstructions or new constructions
Subsequent use Valves, aluminium lids and base profiles can be subsequently used.
Closed-loop recycling: Plain NOWOFLON® ET-foils and valves can be recycled into new valves.
The aluminium components are recycled (statistical value for buildings: 85 %).
Open-loop recycling: Plain NOWOFLON® ET-foils can be reprocessed. The transparent ETFE offcuts
are recycled into valves and other small parts by external companies and are used for new cushions.
Aluminium lids and base profiles can be reprocessed.
Life use > 30 yrs
5. UniversitàdegliStudidiFirenze–DipartimentodiArchitettura(DIDA)
LaboratoriodiProgettazionedeiSistemiCostruttivi–AA2012/2013
TxPResearchUniFi–www.txpresearch.wordpress.com
ENVELOPE TECHNOLOGIES
PILKINGTON ACTIVE GLASS
Pilkington glass performance:
1st stage - "photocatalytic”: the coating reacts with daylight to break down
organic dirt.
2ndstage- "hydrophilic”: rainwater hits the glass and spreads evenly, running
off in a "sheet" and taking the loosened dirt with it, also drying
quickly without leaving streaks
Texture cost 100 €/mq
Life use> 30 yrs
In this process, a gaseous chemical mixture is brought in contact with the hot glass substrate
(approximate temperature range 900°F – 1350°F) and a pyrolytic reaction occurs at the surface of the
substrate leading COATING TECHNOLOGY – PROCESSES:
■ Compatible with the properties of glass
■ Able to form uniform thickness films over large areas
■ Able to vary the thickness of these films accuratel
■ Able to produce final product at rates which make it economically viable
■ Be safe to operate & environmentally friendly
PVD Plasma Vapour Deposition
6. UniversitàdegliStudidiFirenze–DipartimentodiArchitettura(DIDA)
LaboratoriodiProgettazionedeiSistemiCostruttivi–AA2012/2013
TxPResearchUniFi–www.txpresearch.wordpress.com
Green Envelope Matrix (GEM)
SS Components Elements Classe di prestazione Triple ETFE
pillows
Flex
fotovoltaici
Pilkington
Activglass
triple
Envelope chiusure Pareti
infissi
1. permeability to air (Resistance to
Weathering)
excellent excellent
2. permeability to water excellent
2.1 Water absorption in % 0.007 0
2.2 Water vapor rate 752
Ng cm m-2
s-1
3. Thermal Transmittance, U value 1.7 w/mqK 0.7 w/mqK
4. Acoustic Isolation Up to 50 db Up to 50 db
5. Storm water design Included in
system
6. Optimized energy performance
6.1 light transmittance (in %) 75.4 43
6.2 installed power 918 kWp
6.3 estimated annual power output 730000 kWh
/ year
6.4 power mq 45-50 wp
6.5 feed in payback 322.000
euro/year
7. recycle 100%
8. friction coefficient 0.4
9. co2 reduction 95% 650 t/year 15-80 milt/year
