Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
The invention relates to a film-coated vacuum insulation panel comprising at least one inner core, at least one outer film which encloses the inner core, an inner film situated between the inner core and the outer film, and from which the outer film is raised at least in areas, preferably on all sides, by means of a shell material, the inner film and/or outer film being designed as an air-tight barrier film, wherein a) at least the inner film includes at least one ply made of an ethene-vinyl alcohol copolymer, preferably metallized, in particular having a permeation value of 0.003 cm3/(m2*d) or less under standard conditions (23° C., 50% external relative humidity), and b) wherein the shell material includes a drying agent which is present with a surface density of at least 100 g/m2 relative to the base area of the vacuum insulation panel, and whose water vapor adsorption isotherm θH2O=θH2O(PH2O)|T=23° C. at a temperature of T=23° C. can be minimized, at least at low pressures pH2O below the saturation vapor pressure pH2O,sat at temperature T=23° C. and an atmospheric total pressure p=patm: pH2OθH2O,L=KL*pH2O/[1+KL*pH2O], where pH2O is the water vapor partial pressure and θH2O=q/qmax is the proportion of the water vapor absorption q=mH2O/mTM>relative to the maximum water vapor absorption capacity qmax=mH2O,max/mTM of the material at temperature T=23° C., the Langmuir constant being KL=102 bar−1 or greater, preferably KL=103 bar−1 or greater, in particular KL=104 bar−1 or greater.
The invention relates to a film-coated vacuum insulation panel comprising at least one inner core, at least one outer film which encloses the inner core, an inner film situated between the inner core and the outer film, and from which the outer film is raised at least in areas, preferably on all sides, by means of a shell material, the inner film and/or outer film being designed as an air-tight barrier film, wherein a) at least the inner film includes at least one ply made of an ethene-vinyl alcohol copolymer, preferably metallized, in particular having a permeation value of 0.003 cm3/(m2*d) or less under standard conditions (23° C., 50% external relative humidity), and b) wherein the shell material includes a drying agent which is present with a surface density of at least 100 g/m2 relative to the base area of the vacuum insulation panel, and whose water vapor adsorption isotherm θH2O=θH2O(PH2O)|T=23° C. at a temperature of T=23° C. can be minimized, at least at low pressures pH2O below the saturation vapor pressure pH2O,sat at temperature T=23° C. and an atmospheric total pressure p=patm: pH2OθH2O,L=KL*pH2O/[1+KL*pH2O], where pH2O is the water vapor partial pressure and θH2O=q/qmax is the proportion of the water vapor absorption q=mH2O/mTM>relative to the maximum water vapor absorption capacity qmax=mH2O,max/mTM of the material at temperature T=23° C., the Langmuir constant being KL=102 bar−1 or greater, preferably KL=103 bar−1 or greater, in particular KL=104 bar−1 or greater.
Film-coated vacuum insulated panel
CAPS ROLAND (Autor:in)
27.06.2017
Patent
Elektronische Ressource
Englisch
IPC:
F16L
PIPES
,
Rohre
/
B32B
LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
,
Schichtkörper, d.h. aus Ebenen oder gewölbten Schichten, z.B. mit zell- oder wabenförmiger Form, aufgebaute Erzeugnisse
/
E04B
Allgemeine Baukonstruktionen
,
GENERAL BUILDING CONSTRUCTIONS