Solar heat collecting apparatus

Details Solar heat collecting apparatus Solar heat collecting apparatus

1976-09-16

1979-01-09

Sprague, Kenneth W.

Stoves and furnaces

Heaters

Surface

165181, F24J 302

Patent

active

041332989

ABSTRACT:
A solar heat collecting apparatus comprises at least one heat collecting element comprising a cylindrical outer member in which at least its circumferential wall has permeability to solar radiant energy and the two end faces of the cylinder are closed, a cylindrical inner member disposed in the outer member with the interposition of a thermal insulating space with its either end protruding beyond each end face of the outer member, an absorbing means for absorbing the difference between the amounts of heat expansion and contraction of the outer and inner members, the two members and the means being integrally formed.

REFERENCES:
patent: 980505 (1911-01-01), Emmet
patent: 1946184 (1934-02-01), Abbot
patent: 2133649 (1938-10-01), Abbot
patent: 2554661 (1951-05-01), Clancy
patent: 3227153 (1966-01-01), Godel et al.
patent: 3464402 (1969-09-01), Collura
patent: 3961619 (1976-06-01), Estes et al.
patent: 3976508 (1976-08-01), Mlavsky
patent: 4018215 (1977-04-01), Pei

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