Stoves and furnaces – Heaters – Surface
Patent
1977-06-10
1979-04-24
Sprague, Kenneth W.
Stoves and furnaces
Heaters
Surface
126270, F24J 302
Patent
active
041506626
ABSTRACT:
Solar energy reflecting and collection structure for effecting improved energy recovery in solar collection systems. The reflecting structure includes cavities or depressions of parabolic character and, for ease of construction, are cast of aggregate and bonding agent materials. Such casting materials include extremely light-weight materials such as perlite, vermiculite, pumice, expanded shale and any volcanic aggregate. The casting technique utilized precludes the necessity for metal spinning or metal fabrication which is so expensive. The heat transfer tube utilized includes generally self-contained transparent or translucent cylindrical enclosures which have lens functions for concentrating, in dots, lines, or a combination of both, recovered solar energy, this to improve the temperature gradient on opposite sides of the heat exchanger tube wall so as to provide for a rapid and maximum recovery in utilization of heat, relative to the fluid carried by the heat exchanger tube.
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patent: 3130084 (1964-04-01), Loring
patent: 3866285 (1975-02-01), Clark
patent: 3934573 (1976-01-01), Dandini
patent: 3935897 (1976-02-01), Pulver
patent: 4037583 (1977-07-01), Bakum et al.
patent: 4056092 (1977-11-01), Meier et al.
patent: 4065053 (1977-12-01), Fletcher et al.
patent: 4069809 (1978-01-01), Strand
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