Stoves and furnaces – Tool having fluid fuel burner – Soldering iron
Patent
1980-05-05
1982-10-19
Yeung, James C.
Stoves and furnaces
Tool having fluid fuel burner
Soldering iron
126422, 126435, 126438, 126433, 16510422, F24J 302
Patent
active
043544835
ABSTRACT:
A closed loop solar collector system includes a linear concentrating parabolic reflector, a linear vaporizer tube horizontally aligned along the focal line of the parabolic reflector, and a fluid metering assembly attached to the input end of the vaporizer tube for precisely metering a quantity of a vaporizable heat transfer fluid from a supply tank to the vaporizer tube. Solar energy concentrated by the parabolic reflector on the vaporizer tube vaporizes the heat transfer fluid. The heated vapor flows out the outlet end of the tube opposite the fluid metering assembly through a pipe and enters a heat exchanger. The heat exchanger contains a heat absorptive medium which absorbs heat from the vaporized fluid to cause the fluid to condense and release its latent heat of vaporization to the heat absorptive medium. The condensed fluid flows back to the heat storage tank for re-use under pressure provided by the vaporized fluid entering the heat exchanger. A valve conduit is provided to cause the heat transfer fluid to bypass the heat exchanger and return to the fluid supply to maintain system fluid supply at a high level. A valved bypass around the fluid metering assembly is provided between the fluid supply and the vaporizer tube to supply sufficient heat transfer fluid to the vaporizer tube when pressure in the linear vaporizer tube exceeds a predetermined level. The fluid supply is provided with a two-chambered reservoir connected by a level controlled valve to assure the fluid in the system is maintained at an optimum temperature. A valved bypass responsive to the temperature of the heat transfer fluid measured in the vaporizer tube is provided between the fluid supply and the linear vaporizer tube. Accordingly, when the temperature of the heat transfer fluid drops below a predetermined level, the fluid in the supply empties into the vaporizer tube and the remainder of the closed loop system in order to minimize heat loss. A thermoelectric generating system using the present closed loop solar system is also provided utilizing a separate loop with a working fluid, such as ammonia, to drive an electric generator.
REFERENCES:
patent: 3390672 (1968-07-01), Snelling
patent: 4061131 (1977-12-01), Bohanon
patent: 4110986 (1978-09-01), Tacchi
patent: 4220138 (1980-09-01), Bottum
patent: 4241784 (1980-12-01), Tacchi
patent: 4246890 (1981-01-01), Kraus et al.
patent: 4270521 (1981-06-01), Brekke
patent: 4286579 (1981-09-01), Johnston
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