F - Mech Eng,Light,Heat,Weapons – 24 – D
Patent
F - Mech Eng,Light,Heat,Weapons
24
D
F24D 3/12 (2006.01) F16K 31/68 (2006.01) F24D 19/10 (2006.01)
Patent
CA 2140467
A hydronic heating system having a boiler system supplying relatively hot supply water in a boiler supply line to a heating body or to a heat exchanger that feeds hot water to such a body and a boiler return water line feeding relatively cool boiler system water to the boiler for heating in the boiler has a three-way modulated valve in the boiler system for feeding some of the boiler supply water to the return water line to raise the temperature of the relatively cool boiler system water fed to the boiler for heating in the boiler so that it does not "cold shock" the boiler, includes a control system for the valve that varies the flow of supply water fed to return water line return water raised temperature detector providing feedback control to the valve so that: the flow of supply water to the return water line is increased when the return water raised temperature decreases and so avoid "cold shock" of the boiler; and the flow of heat to the heating body is reduced to avoid "hot shock" to the heating body.
Riches Mckenzie & Herbert Llp
Stadler Corporation
LandOfFree
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