Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Minimize thermal edge losses with stainless steel envelopes for vacuum insulation panels (VIPs)
Vacuum Insulation Panels (VIPs) traditionally maintain a reduced pressure in their interior by surrounding a core with an inexpensive laminate of a polymer film with a 7.6 µm thick aluminum film, or a more expensive polymer film coated with ∼0.3 µm thick aluminum film. In either case the VIP is too fragile to be attached directly to a building's envelope without utilizing a mechanical superstructure, and thermal edge losses of the superstructure can dramatically reduce the high R value offered by a VIP. We show that commercially available 51 µm thick stainless steel foil has the strength to be attached directly to a building's envelope without a superstructure, is relatively impermeable, and has edge losses between that of an inexpensive laminate and the coated film. We use a finite difference method to estimate how low the edge losses can be reduced. The economic justification for this reduction diminishes after achieving ∼85% of the maximum R value for an infinite panel that would not have any edge losses.
Minimize thermal edge losses with stainless steel envelopes for vacuum insulation panels (VIPs)
Vacuum Insulation Panels (VIPs) traditionally maintain a reduced pressure in their interior by surrounding a core with an inexpensive laminate of a polymer film with a 7.6 µm thick aluminum film, or a more expensive polymer film coated with ∼0.3 µm thick aluminum film. In either case the VIP is too fragile to be attached directly to a building's envelope without utilizing a mechanical superstructure, and thermal edge losses of the superstructure can dramatically reduce the high R value offered by a VIP. We show that commercially available 51 µm thick stainless steel foil has the strength to be attached directly to a building's envelope without a superstructure, is relatively impermeable, and has edge losses between that of an inexpensive laminate and the coated film. We use a finite difference method to estimate how low the edge losses can be reduced. The economic justification for this reduction diminishes after achieving ∼85% of the maximum R value for an infinite panel that would not have any edge losses.
Minimize thermal edge losses with stainless steel envelopes for vacuum insulation panels (VIPs)
Feinerman, Alan D. (Autor:in) / Gupta, Prateek (Autor:in) / Foster, Craig (Autor:in) / Yarbrough, David W. (Autor:in) / Kosny, Jan (Autor:in)
2013
4 Seiten, 6 Bilder, 11 Quellen
Aufsatz (Konferenz)
Englisch
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