Stoves and furnaces – Tool having fluid fuel burner – Curling iron
Patent
1980-05-09
1982-02-16
Yeung, James C.
Stoves and furnaces
Tool having fluid fuel burner
Curling iron
126450, 126448, F24J 302
Patent
active
043155014
ABSTRACT:
A solar hot water heating system includes a plurality of pipe assemblies, each having an outer pressure-sustaining tube and an inner perforated spiral tubing positioned at the roof of a building for which hot water is supplied. End seals close off the ends of the assemblies and support the inner tubing within the outer tubing. Water mixing and prevention of hot spots is accomplished passively by passing water through the spiral inner tubing. An economically favorable system is achieved.
REFERENCES:
patent: 3976508 (1976-08-01), Mlavsky
patent: 4186721 (1980-02-01), Whitman
Steinhilper Frank A.
Yeung James C.
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