Heat exchangers and solar heating

Details Heat exchangers and solar heating Heat exchangers and solar heating

1977-11-21

1980-01-22

Caun, Peter M.

Stoves and furnaces

Tool having fluid fuel burner

Curling iron

126443, F24J 302

Patent

active

041844785

ABSTRACT:
The invention particularly relates to a heat exchanger and a solar heating unit incorporating the heat exchanger, said heat exchanger being constructed with an outer tubular member closed at its ends and provided with a fluid inlet at one end and a fluid outlet at the other end, and an inner tubular member of different cross-sectional shape to the cross-sectional shape of the outer tubular member but positioned and dimensioned so as to provide a plurality of longitudinal points of contact between the outer member inner surface and the inner member outer surface and a plurality of fluid ducts defined by the longitudinal wall portions of the outer and inner tubular members between said points of contact.

REFERENCES:
patent: 705167 (1902-07-01), Walker
patent: 2213894 (1940-09-01), Barry
patent: 4026273 (1977-05-01), Parker
patent: 4059093 (1977-11-01), Knowles et al.
patent: 4078549 (1978-03-01), McKeen et al.

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