1. Membrane Systems with Improved Thermal Insulation and Translucency for Energy Efficient Textile Architecture
Jochen MANARA, Mariacarla ARDUINI, Michaela REIM, Werner KÖRNER
Bavarian Center for Applied Energy Research (ZAE Bayern),

2. Outline
Motivation
- increase of the thermal insulation of membrane constructions
- combination of high thermal insulation with high translucency
Textile Architecture
- multi-layered structure with membranes and translucent insulation
- heat transfer coefficient U
- visual transmittance Tvis
- application of developed structures

3. Textile Architecture with Membranes
Training center of the Bavarian
mountain rescue service
Architect: Herzog + Partner
Implementation: Hightex GmbH
Transparent froof construction
of the royal palace in Dresden
Arch.: Peter Kulka

4. Textile Architecture with Membranes
Translucent roof construction
of the central railway station
in Dresden
Arch.: Foster + Partners
Membrane suspended ceiling
in the ice arena in
Landsberg am Lech
Implementation:
Temme Obermeier GmbH

5. Textile Architecture with Membranes
Energy Efficiency Center (EEC)
of ZAE Bayern with
membrane constructions
Arch.: Lang Hugger Rampp
New Bangkok
International Airport
Architect: Murphy/Jahn
Implementation: Hightex GmbH

6. Membrane Construction
J. Kippers, J. Cremers, M. Gabler, J. Lienhard: Construction Manual for Polymers + Membranes. Birkhäuser/DETAIL 2011

7. Measurement of Visual Transmittance
integrating sphere
mirror
sample
aperture
halogen bulb
with chopper
reference bulb
with chopper
graduated
filter
detector

8. Measurement of Thermal Conductivity

9. thermal conductivity k / mW/(mK)
Membranes and Translucent Insulations
membrane
visual transmittance
Tvis
thermal emittance
th
ETFE foil
0.92
0.83
PTFE-laminated glass fiber
0.47
0.89
translucent insulation
thickness
d / mm
visual transmittance
Tvis
thermal conductivity k / mW/(mK)
aerogel-granulate 25
0.53 20
aerogel-fleece 8
0.18 22

10. Light Transmission and Heat Transfer

11. Translucent Membrane Construction

12. Translucent Membrane Construction

13. Translucent Membrane Construction

14. Translucent Membrane Construction

15. Translucent Membrane Construction
ETFE-foils +
aerogel granulate
ETFE-foils +
aerogel fleece

16. Translucent Membrane Construction
ETFE-foils +
aerogel granulate
Hightex GmbH
© Hightex

17. Translucent Membrane Construction
pneumatic stabilized ETFE-cushions
with translucent insulation at
Energy Efficiency Center (EEC)

18. Translucent Membrane Construction
pneumatic stabilized ETFE-cushions
with translucent insulation at
Energy Efficiency Center (EEC)

19. Conclusions Customized adjustment of visual and thermal properties by
- combining different membranes
- using different translucent insulation materials
Reduction of heat transfer coefficient by
- applying low-e coatings
- increasing thickness of translucent insulation
Application of membrane constructions
- multi-layered membrane constructions
- pneumatic stabilized membrane cushions

20. Acknowledgment
The joint project with the funding code 03ET1309A is funded by the Federal Ministry for Economic Affairs and Energy (BMWi) following a decision of the German Bundestag.