Patent ID: 6691774
Filing Date: 2004-02-17
Classification: B29C,B29L,F28D,F28F,Y10S,Y10T

Abstract:
A process for fabricating a plastic tube bundle for a heat exchanger structure comprising:forming a layer of polymeric tubes having a plurality of tubes held in proximity and side by side to each other, pouring molten polymer over the tubes sufficient to embed the tubes therein, positioning an additional layer of such tubes on the polymer while said polymer is still soft, so that the tubes are embedded in the layer, pouring additional molten polymer over the additional layer of tubes, repeating the last two steps at least once to form a bundle, said bundle being allowed to cool to harden the polymer, and fashioning the tube bundles including the ends of the tubes encased in said polymer to communicate with one or more headers to collect heat exchange fluid.