Heat exchange – Tubular structure – Projecting internal and external heat transfer means
Patent
1979-11-14
1981-01-20
Richter, Sheldon
Heat exchange
Tubular structure
Projecting internal and external heat transfer means
138 38, 138 42, F28F 108
Patent
active
042456975
ABSTRACT:
A tubular body on whose external surface are formed a series of periodically wavy recesses of specific depth and angle, said recesses becoming the corresponding series of similarly wavy projections and thereby improving the mixed state or heat conduction efficiency of a fluid flowing therein.
REFERENCES:
patent: 2252045 (1941-08-01), Spanner
patent: 3212992 (1965-10-01), Salesse et al.
patent: 3217799 (1965-11-01), Rodgers
patent: 3779312 (1973-12-01), Withers, Jr. et al.
patent: 3875997 (1975-04-01), Newson et al.
patent: 3907028 (1975-09-01), Lawson
Creighton Wray James
Richter Sheldon
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