Abstract:
A building construction, in particular a roofed-over hall, has a lattice-type space framework and at least one flexible skin secured thereto as a means defining a chamber (25 or 26) which can be acted upon by a fluid medium and which has at least one inlet/outlet for the fluid medium. Foil webs (22, 23, 24) of translucent plastic material are fixed in superposed relationship between adjacently extending frame members (14) of the framework and form between the two frame members (14) air-tight chambers (25, 26) extending to the frame members. One chamber (25) can be filled with stationary inflation medium and the flow medium can flow through the other chamber (26) between the inlet and the outlet.
Abstract:
An absorber body with flow paths for water or a flowable heat carrier for the direct or indirect heating of fluid or fluids or the like flow agents by solar energy in which the flow paths are produced by the deformation of plastic material, is improved in respect of its production and use in that a panel (12) is provided with slot-like openings, the width of which approximately corresponds to the width of the flow path, and welded on the panel is a foil (14) which is deformed through the openings to form respective shaped foil portions (15) of approximately channel-like cross-section as partial delimitation of the flow path and is sealingly covered on the side remote from the channel-like cross-section. In that arrangement, a carrier plate, a cover foil (50) or an insulating body (54) may be provided on the side of the panel (12) which is remote from the channel-like cross-section of the foil portion (15). The panel is provided with openings correspond to the pattern of the flow paths and is covered over its surface with the foil (14), whereupon the foil is deep-drawn through the openings.
Abstract:
A pressure container suitable for gases, liquids, paste-like materials or similar products comprises two chambers sealed against each other. One of the chambers is constituted by a flexible bag connected to a valve plate common to both chambers. The valve plate is provided with an extension tube extending into the interior of the container. A neck portion of the flexible bag is glued or welded to the extension tube. The outer contour of the extension tube comprises radially extending projections which are bounded by two outer faces each, and which, at their inner ends, merge tangentially into the circle-shaped contour of said first extension tube means and converge into a sharp edge at their outer ends. In this way, a reliable sealing of the two chambers against each other can be achieved.
Abstract:
The solar concentrator arrangement has a concentrating mirror (2) consisting of a metallised plastic shell to reflect parallel incident light. The concentrating mirror ( 2 ) forms part of a foil tube (1) and co-operates with a secondary concentrator (5) which deflects the parallel incident light beams (3,4) from the concentrating mirror concentrically on a heat exchanger. The heat exchanger (7) is placed on the focal line of the secondary concentrator (5) are rigidly secured together and can be automatically moved in relation to the heat exchanger (7) according to the position of the sun.