Heating systems – Water – Circulation
Patent
1997-09-08
1999-03-30
Tapolcai, William E.
Heating systems
Water
Circulation
137561, 1375991, F24D 302
Patent
active
058877860
ABSTRACT:
A passive injection system for a hydronic heating system having a primary loop and a secondary loop is described. The passive injection system establishes a secondary temperature in the secondary loop significantly different from the temperature of the primary or boiler loop. A Venturi tee passively induces flow from the primary loop to the secondary loop. A valve is provided in the flow path of the Venturi tee between the primary and secondary loops and allows some flow or no flow from the primary loop to enter and mix with the secondary loop, depending upon whether the valve is open, closed, or partially open. A return leg is provided at a tee connection for returning flow from the secondary loop to the primary loop. In this way, the temperature of the secondary loop can be set well below the temperature of the primary loop and can be controlled without changing the flow rate of the secondary loop.
REFERENCES:
patent: 2020064 (1935-11-01), Kehm
patent: 2247972 (1941-07-01), Sullivan
patent: 2836197 (1958-05-01), Johnson
patent: 3870228 (1975-03-01), Moseley, Jr.
patent: 3968932 (1976-07-01), Kimmell
patent: 4068681 (1978-01-01), McNair et al.
patent: 5119988 (1992-06-01), Fiedrich
Heat - Timer Corporation
Tapolcai William E.
LandOfFree
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