Stoves and furnaces – Heaters – Surface
Patent
1976-06-17
1977-11-29
Sprague, Kenneth W.
Stoves and furnaces
Heaters
Surface
165170, 165171, F24J 302
Patent
active
040600718
ABSTRACT:
A solar heating system includes a solar collector comprising a continuous length of copper tubing coiled into a helical array of closely adjacent turns and supported within a sealed housing. The outer turns of the array are fabricated of tubing having a greater diameter than the tubing which forms the inner turns of the array, and the total length of the larger diameter tubing in the array is greater than that of the smaller diameter tubing. The relationships beween the tubing diameters and lengths are selected to achieve a desired flow rate and temperature rise for the overall array. The array is supported within the housing by copper sheets which also operate to eliminate moisture condensation within the housing.
REFERENCES:
patent: 1747826 (1930-02-01), Gould
patent: 2552237 (1951-05-01), Trombe
patent: 3200820 (1965-08-01), Garrett
patent: 3927659 (1975-12-01), Blake
Solar Energy Dynamics Corporation
Sprague Kenneth W.
Yeung James C.
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