Stoves and furnaces – Liquid heater – Boiler receiving hot liquid or steam from stove or furnace
Patent
1992-10-19
1994-11-29
Price, Carl D.
Stoves and furnaces
Liquid heater
Boiler receiving hot liquid or steam from stove or furnace
251 65, F24H 100, F16K 3108
Patent
active
053680138
ABSTRACT:
A system to stage the operation of a bank of parallel piped fluid heaters in order to avoid cycling at low demand and to spread the load evenly among two or more heaters during high demand. Each heater has a check valve at the inlet and a balancing valve at the outlet. The standard swing type check valve is modified by the use of an internal and external magnet to control the opening pressure. By adjusting the opening pressure of the check valves and balancing the system with the balancing valves, heater staged operation can be achieved.
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