Other

Lindab Ab

Scandinavian Solar Ab

Goran Hultmark

Robert Salomonsson

Anders Vorre

Martin Jespersen

The invention relates to a plenum box () configured for use in a ventilation system () with flowing air in order to be able to quickly regulate flows between the ventilation system () and a room. The plenum box () comprises a pressure distribution pipe () which is disposed in an inlet () to the plenum box () and which itself comprises a regulating damper (), and an outlet (). The inlet () is configured to have an air flow () passing through it. The pressure distribution pipe () extends inside the plenum box () from the inlet (), and the surface of the pressure distribution pipe () has perforations () which allow the air flow () to pass through them between the inside () and outside () of the pressure distribution pipe (). The regulating damper () is disposed adjustably in the axial direction () inside the pressure distribution pipe () whereby the total aperture cross-section () of the perforations () per unit length varies in the axial direction () of the pressure distribution pipe ().

Plenum box

A solar accumulator with a plane solar heat collector of the kind which emits radiated heat to an accumulator tank containing a heating fluid in a pressure free condition and at least one heat exchanger coil is arranged in said accumulator tank. The collector comprises an external transparent covering means for the incident radiation disposed at a selected distance from a radiation absorbent surface, which comprises one wall of the accumulator tank comprising a material having a good thermal conductivity convection preventing elements defining a plurality of closed air spaces are disposed between the covering means and the absorption surface. A high effective insulation is applied directly against all sides of the accumulator tank, with the exception of the absorption surface.

Plane solar heat collector

Means of attachment of the kind that comprises a fittings (11) which is easily mountable and dismountable to an object (26) and displaceable sideways with respect to this. The purpose is to provide a means of attachment which is easily mountable and dismountable, which can be fixed along the edge sides of the object without using tool, which is simple and cheap in manufacturing and which offers a strong and effective attachment. These problems have been solved by the fact that the object (26) is provided with grooves (27,28) or the like arranged substantially parallel, spaced apart and opposite each other, that the fittings (11) consists of two plate-shaped parts (12,13) partially overlapping each other, the brought-together position of which corresponds to the distance between the grooves (27,28), and that at least one part (12) is designed with means (17) arranged to fix the free end section (18) of the other part (13) against displacement across the plane of the parts.

Growing community of inventors

Vastra Frolunda, Sweden

Goran Hultmark