Electric heating – Heating devices – Combined with container – enclosure – or support for material...
Patent
1984-06-27
1987-12-22
Bartis, Anthony
Electric heating
Heating devices
Combined with container, enclosure, or support for material...
126400, 165 18, 16510421, 219302, 219341, 219378, H05B 102, F24H 702, F24D 1100
Patent
active
047148217
DESCRIPTION:
BRIEF SUMMARY
BACKGROUND OF THE INVENTION
The present invention relates to a heat accumulator and more precisely to an accumulator of the type that is arranged in heat exchange relation with a heating system for transferring energy to said system.
The problem behind the invention is to accomplish an accumulator that is of reasonable dimensions and is easily adaptable/insertable to/into existing heating boiler constructions and is suitable for series production by established techniques.
Of course, the need for reduction of energy costs has been recognized and there have been long proposed for instance a number of heating systems using relatively cheaper night energy. Such a known solution makes use for instance of a water tank as a storing vessel. In order to provide an energy storing capacity at a reasonable level, bulky, space and cost demanding constructions are required. Other known constructions are also based on complex arrangements which are expensive and constitute less desirable solutions to the problem of using cheap night energy.
According to the prior art, there has been proposed what might appear to be a simple and obvious solution of the problem by combining known material types or modern equivalents thereof with modern heating boiler constructions, implying among other things that the energy storing capacity of the material is "upgraded". The term storing capacity means energy storing capacity expressed as the product of heat capacity, maximum temperature and weight of the storage material.
SUMMARY OF THE INVENTION
Having this in mind, the present invention provides, in the broadest sense thereof, a heat accumulator arranged in heat exchange relation with a heating system. The accumulator comprises a body of a material having a high heat capacity and a high melting point, for instance cast iron, ceramic material, etc., and the body is arranged for being heated by electric energy to a temperature considerably higher than the maximum temperature of the heating system.
The heat accumulator is arranged in heat exchange relation with the water system of the heating system, and the heat exchange between the accumulator and the water system is accomplished by using a conduit containing fluid in liquid phase, for instance water, communicating with the water system.
The most preferred embodiment at present makes use of an open conduit containing water in direct communication with the water system.
In another embodiment where the heating system comprises a heating boiler, the heat exchange conduit preferably is a closed loop where the fluid circulates by controlling a circulation pump, the suction side of which communicates with an expansion vessel, preferably vented to the atmosphere.
The circulating heating system water is hereinafter referred to as "artesian water". The control device of the pump preferably comprises a thermostat and/or a thyristor device for sensing the temperature of the artesian water of the water system of the heating boiler and/or at the input of the loop and/or output from the artesian water system.
In an alternative embodiment where the heating system comprises a heating boiler, the heat exchange between the accumulator and the artesian water is accomplished by using a conduit containing a fluid having a high boiling point, for instance lubricant oil, in communication with the artesian water system.
In the most preferred embodiment, the heat accumulator body is arranged for being heated to said high temperature by using electric night energy.
The heat exchange conduit preferably is arranged as a loop wherein the fluid circulates by controlling a circulation pump.
The control device of the pump preferably comprises a thermostat for sensing the temperature of the water system.
In still another embodiment of the invention where the heating system comprises a heating boiler, the heat exchange between the accumulator body and the artesian water system is accomplished by a device for contact heat transfer between the body and the artesian water system of the heating boiler.
In the most pref
REFERENCES:
patent: 4105895 (1978-08-01), Kennedy
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