Heating and ventilation system for a building

Stoves and furnaces – Solar heat collector – With heat storage mass

Patent

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Details

126632, 126628, 126620, F24J 234

Patent

active

059540460

DESCRIPTION:

BRIEF SUMMARY
FIELD OF THE INVENTION

The present invention relates to a system for heating and ventilating a building which includes a generally peripheral foundation wall or edge beam which supports the external walls of the building, a floor construction which defines residential floor areas in the building, a space located beneath the floor construction and contained within the foundation wall, and openings which pass through the floor construction in the proximity of the external walls of the building to enable air to pass from said underlying space to the residential areas of the building.


BACKGROUND OF THE INVENTION

A system of this kind is known, for instance, from SE-B-468 441, where the building foundations beneath the floor define a space which can be referred to generally as a miniature cellar or crawl in space. This space is thermally insulated and is sufficiently large to accommodate service equipment such as heat exchangers, water heaters, water and sewage connections, and the like. Exhaust air is ducted from the building interior to a heat exchanger in the service space and then discharged as extract air from the foundations/the building to atmosphere through an outlet duct. Ambient or outdoor air is taken as supply air through an inlet duct and passed to a heat exchanger for heat exchange with the exhaust air, from where the supply air is passed to the service space. The supply air is then passed from the service space to the residential areas in the building, through a slot which extends around the perimeter of the external walls and the floor.
One problem with known foundations of this kind is that a heat exchanger is needed for the exchange of heat between the supply and the exhaust air. Another problem is that such heat exchangers must be cleaned regularly. Yet another problem with such known systems is that the circulation of air in the residential areas/the utility areas is determined by the flow of supply and exhaust air to and from the building. A further drawback is that the service space must be given a size which will enable the space to accommodate the heat exchanger or heat exchangers and to afford room for them to be cleaned. The service space must also be heavily insulated.


SUMMARY OF THE INVENTION

An object of the invention is to provide a system which will enable the floor to be heated with the aid of relatively simple means and therewith at relatively low costs, by passing and attemperating air from the residential areas of the building through the space beneath the floor into surface enlarged contact with the underside of the floor. Another object of the invention is to provide a system which utilizes a substantial part of the energy contained by the building exhaust air without requiring the use of a true heat exchanger to this end.
Important features of the inventive system are that: into heat exchange contact with the underside of the floor over essentially the whole area of the floor; which the circulated air flows (this floor construction may be a self-supporting floor or a ground-supported floor structure); support the external walls of the building, such as to screen the space horizontally inwards of the foundation elements; through the barrier, wherein the barrier and the ground base in the foundations define a space through which the exhaust air is driven from its exiting location in the gap in a direction towards the foundation elements, to essentially all longitudinal sections thereof; foundation element and/or the base supporting said foundation element is permeable to air along essentially its full length, wherewith exhaust air is able to continue to flow generally radially outwards through the gap and further through the foundation element or its supporting base while transferring heat thereto.
The exhaust air is then allowed to flow to the surrounding atmosphere. The air-permeable material may extend to the vicinity of the ground surface outside the edge beam/foundation wall.
In the case when the barrier lies on the ground inwards of the foundation wall/the edge b

REFERENCES:
patent: 2206119 (1940-07-01), Persons
patent: 2559871 (1951-07-01), Gay
patent: 4195441 (1980-04-01), Baldwin
patent: 4578912 (1986-04-01), Wegler
patent: 4602676 (1986-07-01), Bergeron
patent: 4620398 (1986-11-01), Wallin

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