Heating systems – Water – Expansion tanks
Patent
1993-10-29
1995-10-10
Tapolcai, William E.
Heating systems
Water
Expansion tanks
137429, 1374938, F24D 310
Patent
active
054564093
ABSTRACT:
A method and device for maintaining a fluid at a working pressure in a substantially closed fluid circulation system wherein the temperature of the fluid can vary and which is preferably deaerated continuously. The maintenance of a working pressure is realized by keeping the system filled automatically by connecting said system, by means of a closable connection, to a stock of fluid which is under atmospheric pressure, the fluid circulation system and the stock of fluid being connected directly, which connection is opened at and below atmospheric pressure at the location of the connection and, when the working pressure rises, is automatically closed at atmospheric pressure at the location of the connection. If so desired, replenishment of the stock of fluid, which is preferably disposed in the vicinity of the highest point of the system and may serve as expansion possibility for the system, may be effected automatically.
REFERENCES:
patent: 3570762 (1971-03-01), Wanson
patent: 3834355 (1974-09-01), Arant
patent: 4337873 (1982-07-01), Johnson
patent: 4345715 (1982-06-01), Van Craenenbroeck
patent: 4456172 (1984-06-01), Roffelsen
patent: 5007583 (1991-04-01), Schwarz
Spiro Research B.V.
Tapolcai William E.
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