Stoves and furnaces – Tool having fluid fuel burner – Soldering iron
Patent
1984-07-18
1985-10-01
Yeung, James C.
Stoves and furnaces
Tool having fluid fuel burner
Soldering iron
126422, F24J 302
Patent
active
045439443
ABSTRACT:
A control circuit for controlling the fan or circulating pump in a solar-thermal heating system to prevent unnecessary pump or fan switching when short-term interruptions occur in the insolation of the solar panels includes a temperature-sensitive time-delay element tailored to have thermal response characteristics corresponding to those of the solar panels in the system.
REFERENCES:
patent: 4019495 (1977-04-01), Frazier et al.
patent: 4060195 (1977-11-01), Rapp, Jr. et al.
patent: 4125107 (1978-11-01), Nurnberg
patent: 4319561 (1982-03-01), Pei
patent: 4397301 (1983-08-01), Onno
Birchard Bruce L.
Yeung James C.
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