Tube sheet for apparatus for transferring heat and/or mass, use

Details Tube sheet for apparatus for transferring heat and/or mass, use Tube sheet for apparatus for transferring heat and/or mass, use

1989-03-01

1991-01-15

Cohan, Alan

Heat exchange

Side-by-side tubular structures or tube sections

With manifold type header or header plate

21032189, 165905, F28F 902

Patent

active

049846302

ABSTRACT:
In an injection-molded tube sheet of thermoplastic material for apparatus for transferring heat and/or mass with at least 25 through-holes for taking up tube ends, the holes have a hydraulic diameter of at most 3 mm and the minimum web width between neighboring holes is at most 0.4 mm. The thickness of the tube sheet ranges from 3 to 10 mm. Such a tube sheet is particularly suitable for the compact arrangement of tube ends and is therefore used for producing apparatus for transferring heat and/or mass. It is fabricated by an injection-molding process in which the melt is first distributed in the injection mold over the cross-sectional area before being pressed into the region of the tube sheet proper.

REFERENCES:
patent: 3228876 (1966-01-01), Mahon
patent: 3459622 (1969-08-01), Fisher
patent: 4740344 (1988-04-01), Wollbeck et al.
patent: 4790372 (1988-12-01), Gemeinhardt et al.
J. D. Robinson, "Gating and Cooling Techniques for Polypropylene" Plastics, Aug. 1965, pp. 47-51.

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