Multiple boiler steam generation system
OwnerClyde F. Berryinventor
Life of this patent
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Abstract
Steam generation means utilizing first and second boilers, the first of which is a high pressure boiler located within or in very intimate heat transfer contact with the second boiler. The steam generated in the high pressure boiler is used to drive continuously or intermittently, a turbine and an associated electrical generator whose output activates electrical resistance units located in the boilers. These heating units supplement an external heat source to maintain steam pressure in the high pressure boiler. The exhaust steam from the turbine at reduced pressure is used to supply heat in any closed steam consuming device such as a space heating system. The condensate is returned to the second boiler which acts as a preheater for water to be pumped from said second boiler to said first boiler as needed.
Claims9
In combination, a first boiler within a second larger boiler,
- a first electrically actuated heating element in heat transfer engagement with the water in said first boiler,
- an outside source of heat for the water in said first boiler,
- a turbine adapted to be driven by steam from said first boiler,
- an electric generator driven by said turbine,
- said generator operatively connected to said first heating element whereby when said generator is being driven by said turbine said generator will supply current to said first heating element to provide some of the heat which together with the outside heat source will form steam in said first boiler faster than steam is being used to drive said turbine,
- means for controlling the flow of steam to said turbine,
- an exhaust steam pipe from said turbine leading to a closed system steam consuming device,
- means for returning the condensate from said device to said second boiler,
- and a second electrically actuated heating element in said second boiler capable of maintaining the water temperature therein at a predetermined degree.
A method of generating steam for utilization in a closed steam consuming device, said method comprising the steps of
- continuously generating steam in a boiler by using two separate heating means,
- feeding the steam so generated to a turbine,
- driving an electric generator by said turbine,
- utilizing at least some of the electric output of said generator to supply one of said heating means, to assist in steam generation in said boiler,
- utilizing an outside source to supply said other heating means,
- delivering the exhaust steam from said turbine to said steam consuming device where the steam after heating said steam consuming device will condense,
- returning the steam condensate from said steam consuming device to a closed water container in which said boiler is located,
- pumping water from said container to said boiler in sufficient quantity to maintain the water level in said boiler,
- and controlling the operation of said heating means thereby to maintain steam pressure in said boiler between predetermined limits.
Dependencies are inferred from the claim text.