Fixed position concentrating solar collector

Details Fixed position concentrating solar collector Fixed position concentrating solar collector

1984-11-05

1985-10-15

Jones, Larry

Stoves and furnaces

Tool having fluid fuel burner

Curling iron

126425, 126439, F24J 302

Patent

active

045467579

ABSTRACT:
A fixed position concentrating solar collector in the form of a trough having an inner surface reflective to solar radiation and formed to direct the sun's rays entering the trough onto a radiation absorber element, the trough having end structures capable of selectively reflecting solar radiation into the trough or of being made transparent for passing solar radiation into the trough which would otherwise be blocked off by the trough end. Devices responsive to the position of the sun relative to the trough automatically control clearness-reflectiveness of the trough ends. End structures include flexible sheets on a roller, movable ends, jointly movable slats, leaves which may be aligned or fanned out, inflatable bags and flexible sheets controlled by bourdon tubes. A highly efficient configuration of the trough reflecting surface has a transverse plane profile defined by a compound parabolic curve comprising a half parabola joined to the other half of the parabola by a quarter circle shifted 90.degree. with respect to the first half, the distance between the focus of the parabola being equal to the radius of the quarter circle and the focus of both of the half parabolas and the circle being in the same position.

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patent: 4159706 (1979-07-01), Mahdjuri
patent: 4192292 (1980-03-01), Root
patent: 4215674 (1980-08-01), Riggs et al.
patent: 4233958 (1980-11-01), Heden
patent: 4237864 (1980-12-01), Kravitz

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