| Submission declined on 17 December 2023 by DoubleGrazing (talk). This submission appears to read more like an advertisement than an entry in an encyclopedia. Encyclopedia articles need to be written from a neutral point of view, and should refer to a range of independent, reliable, published sources, not just to materials produced by the creator of the subject being discussed. This is important so that the article can meet Wikipedia's verifiability policy and the notability of the subject can be established. If you still feel that this subject is worthy of inclusion in Wikipedia, please rewrite your submission to comply with these policies. This draft's references do not show that the subject qualifies for a Wikipedia article. In summary, the draft needs multiple published sources that are:
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| Submission declined on 13 December 2023 by Liance (talk). This submission is not adequately supported by reliable sources. Reliable sources are required so that information can be verified. If you need help with referencing, please see Referencing for beginners and Citing sources. This submission reads more like an essay than an encyclopedia article. Submissions should summarise information in secondary, reliable sources and not contain opinions or original research. Please write about the topic from a neutral point of view in an encyclopedic manner. Declined by Liance 5 months ago. | |
Comment: What exactly is this? If this is a guide to using ETFE, then that's contrary to Wikipedia's objects, we do not publish how-to-guides.If this is about something called 'ETFE design guide', then none of the sources seem to mention it, so it is clearly non-notable.In any case, this is oddly promotional in tone and content, as if someone is wanting to... sell more ETFE? DoubleGrazing (talk) 09:50, 17 December 2023 (UTC)
- Comment: On Wikipedia, all stated facts should be supported by a citation to a reliable source. Currently, large portions of this draft are unsourced - please add necessary citations before resubmitting. Thank you. ~Liancetalk 21:12, 13 December 2023 (UTC)
ETFE design guide edit
Abstract edit
Ethylene Tetra Fluoro Ethylene ETFE [1] in its architectural application has attracted sustainability and aesthetic driven skylights and facades construction worldwide.
Over the past forty years, there has been an increased awareness of the material and its architectural use, and it is now specified by architects and designers across the world on a wide range of projects – from schools, shopping centers and offices, to government buildings and mega sports facilities-refer to Notable Projects in ETFE such as Allianz Arena. The polymer has been architecturally customized by extruding it to foil form which eventually fabricated mainly into two main forms single layer, or multilayers(i.e. air filled cushions).
Thermal Insulation (R-value) edit
Thermal insulation R-value is a factor defines the resistance of of material surface to thermal flux(energy) passing through material surface While a single ply or layer ETFE membrane provides little more than a barrier to the outside world, the thermal qualities of ETFE in cushion form can be dramatically improved by the addition of more layer of foil to create additional pocket of air as follows based on a double or 2 layers cushion:
Energy Procedia Volume 158 (2019) pages 3191–3195[2] by Haomin Wang, Jan-Frederik Flor,Yepeng wu
The thermal resistance and U value of ETFE double layer cushion under various inclination angles.[2](Table3)
| Inclination angles
(°) |
External Surface Total Heat
Transfer Coefficient (W/m2 K) |
Internal Surface Total Heat
Transfer Coefficient (W/m2 K) |
R-Value (mK/W) | U-Value (W/m2 K) |
|---|---|---|---|---|
| 90 | 23 | 6.9147 | 0.196 | 2.6 |
| 45 | 21.09 | 6.7928 | 0.201 | 2.52 |
| 0 | 20.29 | 7.6676 | 0.210 | 2.56 |
Accordingly adding more air pockets(i.e ETFE layers) will enhance U-value further.
Solar Heat Gain Coefficient SHGC edit
The amount of solar energy passing through a surface of material due to sunlight/solar radiation and conduction referred as Solar Heat Gain Coefficient SHGC. This solar gain is generally desirable in winter, due to the passive heating effect the space will have as a result of the sun, and undesirable in summer due to overheating as the space will require additional cooling measures. Since ETFE is transparent foil in its basic supply then the only way to adapt to wide range of SHGC from approximately 20% up to 95% would be via implementing printing or fritting on the foil using a specialist printing method, the surface of the ETFE foil can be covered with a silver pattern to reflect light transmission and reduce solar gain while retaining visual translucency. By varying the percentage of coverage and density of the ink, the energy and light transmission can be altered. A standard range of fritting patterns to achieve this variety of light transmissions and for clients with very specific performance or aesthetic requirements is available, it’s also possible to have custom patterns of printing.
Further read on day light optimization in ETFE facades[3]
Super Lightweight edit
ETFE is 100 times lighter than glass[4] , such a significant dead load erosion for ETFE adds significant value when huge spans are into play such as huge skylights or sport venues.
Further read on comparison between ETFE and glass as per AGC foil extruder can be found in this link from their website ETFEvsGlass
Fire Behavior edit
Following website information of AGC ETFE foil extruders, ETFE Foil as a material has a melting temperatures of (260 degrees Celsius) and ETFE Film is a UL standard 94VTM-0 flame retardant material(reference website behavior). In the event of a fire, hot smoke will cause the foil to soften, evaporate and then shrink away from the fire source.
Further read on ETFE fire behavior[5]
References edit
- ^ "What is ETFE and Why Has it Become Architecture's Favorite Polymer?". ArchDaily. 2019-04-06. Retrieved 2023-12-16.
- ^ a b Wang, Haomin; Flor, Jan-Frederik; Sun, Yanyi; Wu, Yupeng (2019-02-01). "Numerical investigations on the thermal performance of adaptive ETFE foil cushions". Energy Procedia. 158: 3191–3195. Bibcode:2019EnPro.158.3191W. doi:10.1016/j.egypro.2019.01.1012. ISSN 1876-6102.
- ^ Flor, Jan-Frederik; Liu, Xiao; Sun, Yanyi; Beccarelli, Paolo; Chilton, John; Wu, Yupeng (2022-02-01). "Switching daylight: Performance prediction of climate adaptive ETFE foil façades". Building and Environment. 209: 108650. Bibcode:2022BuEnv.20908650F. doi:10.1016/j.buildenv.2021.108650. ISSN 0360-1323.
- ^ "ETFE, the Bubble Wrap of Building". ThoughtCo. Retrieved 2023-12-17.
- ^ "ETFE fire behavior | United Arab Emirates | Fabrix360". home. Retrieved 2023-12-10.