Pipes and tubular conduits – Plural duct – Surrounding radially spaced duct with axially spaced...
Patent
1980-10-15
1983-08-16
Bryant, III, James E.
Pipes and tubular conduits
Plural duct
Surrounding radially spaced duct with axially spaced...
138111, 138114, 138148, F16L 918
Patent
active
043985670
ABSTRACT:
A device for conducting a fluid in heat transfer relationship with another liquid comprises a conduit through which the fluid flows to be heated or cooled by the other fluid flowing around the conduit. An elongated, thread like element helically extends around the conduit with the windings spaced from each other, causing the fluid flowing around the conduit to undergo circulation for improved heat transfer relationship.
REFERENCES:
patent: 1777356 (1930-10-01), Fisher
patent: 1817948 (1931-08-01), Smith
patent: 1852489 (1932-04-01), Sullivan
patent: 1852490 (1932-04-01), Sullivan
patent: 2693346 (1954-11-01), Petersen
patent: 3477412 (1969-11-01), Kitrilakis
Bryant III James E.
Cinderella AB
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