| 摘要 |
<p>An extensional flow static heat exchanger with at least two components of tubular cooling elements arranged in a flow passage adapted to be flown through by a flow medium in a flowing direction, wherein the components are successively arranged in the flowing direction, each component consists of a first set and a second set of at least two cooling elements, the cooling elements of the first and the second set are spaced substantially parallel to each other in a plane running substantially perpendicularly to the flowing direction, the cooling elements of the first set being angularly offset to the cooling elements of the second set with respect to the longitudinal axis of the flow passage, and the cross sections of the cooling elements have a convex profile on the upstream and downstream side with regard to the flow direction or a droplet shape, the cooling elements of the first set of the adjacent component are arranged at least partially in the space between two cooling elements of the first set of the previous component, and the cooling elements of the second set of the adjacent component are arranged at least partially in the space between two cooling elements of the second set of the previous component, a process for producing a low density extruded thermoplastic foam material and a low density extruded thermoplastic foam material.</p> |
