Abstract:
A portable apparatus for measuring the internal pressure of a vacuum panel is described, includes a measuring head having an cavity wherein a sensor of movement is arranged; the device, supported on a portion of the envelope of the panel, detects the movement of a part of the portion of the envelope facing the cavity, following the evacuation of the space formed by said cavity and the part of envelope.
Abstract:
A heat insulating system for tubular bodies includes at least two superimposed evacuated panels (4, 4′), at least one of the panels is formed essentially by an evacuated envelope which contains a polymeric filling material inside thereof, and at least one other panel is formed essentially by an evacuated envelope which has an inorganic filler present inside thereof, in the form of powders, fibers or their mixtures. Each of the evacuated panels (4, 4′) is rolled up around a rolling axis to such that two opposed edges thereof (5, 5′) parallel to the rolling axis are mutually set side by side. The rolled evacuated panels (4, 4′) are also arranged with the edges (5) of an evacuated panel (4) being staggered with respect to the edges (5′) of another evacuated panel (4′).
Abstract:
A process is provided for producing an insulating system, comprising at least a vacuum insulating panel (20; 30) in a matrix of homogeneous polymeric foam (602; 707), inside an interspace (101; 703) of a device which must subsequently be subjected, at least at the interspace, to a temperature higher than 100° C., without damaging this system and without causing it to lose its original insulating properties, by providing a flexible protection system of cardboard.
Abstract:
An evacuated panel is provided for thermal insulation of a body (3, 4) having non-planar surfaces, the panel having two main faces and comprising a flexible envelope (1), made of one or more barrier sheets, and a filling material formed of at least two boards (2; 2′) of an open cell polymeric foam, the boards lying one over the other, and each board having a thickness between about 2 and 8 mm.