Wall element of several layers of differently oriented woods, which not only give the required load capacity, but also rigidity for single and multi-storey construction.
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With plain tube heat exchangers, flow separations can occur which stimulate the pipes to ski. This in turn leads to material fatigue. By attaching 120 degrees offset triangular ribs, which extend in the longitudinal direction of the tubes, the detachment points can be fixed symmetrically on the tube.....
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The yarn passes through two coaxially arranged cylindrical stencils, the outer one of which has a slit-shaped opening and the inner one a helical one. By rotating the outer cylinder at a speed adapted to the yarn speed, a ring-shaped structure that is limited in an axial direction can be applied to .....
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