Heating systems – Heat radiators
Patent
1998-03-16
1999-12-28
Bennett, Henry
Heating systems
Heat radiators
237 8B, F24H 906
Patent
active
060069988
DESCRIPTION:
BRIEF SUMMARY
BACKGROUND OF THE INVENTION
The present invention relates to the heating of a building, and more particularly of a building for industrial use, for example a workshop.
Document FR-A-2,320,501 has described and proposed an apparatus for heating a building using a heat pipe, for example a dwelling, consequently comprising several enclosed spaces or rooms to be heated, each bounded by a wall or equivalent separating means. This heating apparatus comprises a passive heat transfer module or system, forming a closed volume filled with a two-phase heat transfer fluid, for example a fluoro-chlorinated hydrocarbon. This module comprises, at a low end, an evaporator, located outside the enclosed space or room to be heated, a condenser located at the top inside the same enclosed space, and an adiabatic circuit connecting the outlet of the evaporator to the inlet of the condenser, passing through the wall of the enclosed space to be heated, said adiabatic circuit being designed to pass the evaporated heat transfer fluid from the evaporator to the condenser and to return the condensed same fluid from the condenser to the evaporator, all this by means of a column arranged as a heat pipe. The heating means located inside the enclosed space to be heated are solely of the convective type and are thermally coupled to the condenser.
The apparatus described above appears to be unsuitable for heating an industrial building.
Document GB-A-764,280 has described an apparatus for heating using a heat pipe, which comprises, as previously: two-phase heat transfer fluid, comprising at least one evaporator, at least one condenser and an adiabatic circuit, connecting the outlet of the evaporator and the inlet of the condenser, said adiabatic circuit being designed to pass the evaporated heat transfer fluid from the evaporator to the condenser and to return the condensed heat transfer fluid from the condenser to the evaporator; of means for heating the air or ambient atmosphere convectively.
SUMMARY OF THE INVENTION
It is known that convective means turn out to be not very effective for heating an enclosed space of large volume, for example of the workshop type.
The subject of the present invention is therefore an apparatus for heating using a heat pipe, making it possible to heat a building with a satisfactory thermal efficiency which is superior to that using conventional heating means.
In accordance with the invention, the heating means are located at the top of the enclosed space to be heated, are directed downward and combine a thermal-radiation radiative structure which has a relatively large developed surface area, thermally coupled to the condenser, and means for thermally insulating said radiative structure which are located above the condenser and said structure and are dimensioned, with respect to one another, so that the heat radiatively emitted by said heating means represents at least 80% of the heat produced by said means.
BRIEF DESCRIPTION OF THE DRAWING
The present invention will now be described with reference to the appended drawing, in which:
FIG. 1 depicts diagrammatically, with partial cutaway, a building equipped with a heating apparatus according to the present invention;
FIG. 2 depicts, again diagrammatically, a passive heat transfer module forming part of the heating apparatus depicted in FIG. 1;
FIG. 3 depicts, in cross-section on the line III--III of FIG. 2, the heating means forming part of the passive heat transfer module depicted in FIG. 2.
DETAILED DESCRIPTION OF EMBODIMENTS
FIG. 1 depicts a building 14, the roof of which has been removed for the sake of the drawing, having a wall 15 which delimits, on the inside, an enclosed space 1 to be heated. Depending on the length of the building 14, several (in this case four) passive heat transfer modules 2 according to the invention are distributed so as to heat the inside of the building uniformly. The wall 15 of the enclosed space is shown diagrammatically in FIG. 2 by the dot-dash line.
According to FIG. 2, each passive heat transfer module 2 forms
REFERENCES:
patent: 1011880 (1911-12-01), Baerenklau
patent: 2068549 (1937-01-01), Knight
patent: 2146148 (1939-02-01), Knipper
patent: 2246802 (1941-06-01), Kehm et al.
patent: 4061131 (1977-12-01), Bohanon
patent: 4582042 (1986-04-01), Kubler
patent: 4613071 (1986-09-01), Omori
Bennett Henry
Boles Derek S.
Societe Generfeu
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