Concentric tube heat exchange assembly with improved internal fi

Details Concentric tube heat exchange assembly with improved internal fi Concentric tube heat exchange assembly with improved internal fi

1979-09-19

1981-08-18

Richter, Sheldon J.

Heat exchange

With coated, roughened or polished surface

62527, 165156, F28F 1300, F28D 710

Patent

active

042841330

ABSTRACT:
A heat exchanger formed by concentric, spaced tubes defining a substantially annular chamber therebetween. There is an internal metallic fin comprising a strip of corrugated sheet metal extending spirally within the annular chamber with the adjacent turns of the spirally formed strip being spaced from each other to provide a spiral passageway between the side edges of adjacent turns. The metallic fin corrugated sheet metal strip bears a plurality of small apertures to significantly improve the boiling heat transfer coefficient.

REFERENCES:
patent: 2428993 (1947-10-01), Reischelderfer
patent: 2503595 (1950-04-01), Preston
patent: 3009045 (1961-11-01), Porter
patent: 3197975 (1965-08-01), Boling
patent: 3235003 (1966-02-01), Smith
patent: 4163474 (1979-08-01), MacDonald et al.
patent: 4223723 (1980-09-01), Hilal

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