Classifications

• • E—FIXED CONSTRUCTIONS
  • E04—BUILDING
  • E04D—ROOF COVERINGS; SKY-LIGHTS; GUTTERS; ROOF-WORKING TOOLS
  • E04D13/00—Special arrangements or devices in connection with roof coverings; Protection against birds; Roof drainage ; Sky-lights
  • E04D13/17—Ventilation of roof coverings not otherwise provided for
• • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
  • F24—HEATING; RANGES; VENTILATING
  • F24S—SOLAR HEAT COLLECTORS; SOLAR HEAT SYSTEMS
  • F24S10/00—Solar heat collectors using working fluids
  • F24S10/70—Solar heat collectors using working fluids the working fluids being conveyed through tubular absorbing conduits
• • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
  • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
  • Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
  • Y02A30/00—Adapting or protecting infrastructure or their operation
  • Y02A30/60—Planning or developing urban green infrastructure
• • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
  • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
  • Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
  • Y02B10/00—Integration of renewable energy sources in buildings
  • Y02B10/10—Photovoltaic [PV]
• • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
  • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
  • Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
  • Y02B10/00—Integration of renewable energy sources in buildings
  • Y02B10/20—Solar thermal
• • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
  • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
  • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
  • Y02E10/00—Energy generation through renewable energy sources
  • Y02E10/40—Solar thermal energy, e.g. solar towers
  • Y02E10/44—Heat exchange systems

Definitions

• the invention relates to a solar energy recovery system, on a traditional sloping roof with rafters, a sub-roofing screen, counter-battens now the under-roofing screen on the rafters, battens perpendicular to the rafters and counter battens, and cover elements.
• the roofing elements may be small or large in size, for example terracotta tiles, concrete tiles, slates, slate or metal shingles.
• US 7,231,744 discloses a metal roof ventilation system of placing a second cover over the first, with spacers between the two to create an air passage. The air is pumped for domestic or industrial use. Such an arrangement requires doubling of the building's roof. It can only be envisaged for a building with a metal roof and in no case for a traditional roof covering.
• WO 2011/116035 discloses a traditional roof sloping above which are mounted photovoltaic panels.
• the space between the roof elements and the photovoltaic panels is covered by air that heats up under the panels, by heat exchange with the panels. Hot air is collected at the top of the roof and routed to a heat pump.
• the space between the roof elements and a roofing screen is covered by air that is not used.
• An object of the invention is to provide a solar gain recovery system on a traditional sloping roof, which respects the external appearance of the roof.
• Another object of the invention is to provide a solar energy recovery system on a traditional sloping roof, which can be installed by the roofer, without recourse to specialists of another technique.
• the invention relates to a system for recovering solar gains, on a traditional sloping roof consisting of rafters, battens and roofing elements, comprising, between the rafters and the battens, a roof underlay and counter-rafters superimposed on the rafters, the under-roofing screen being arranged on the rafters and held by the counter-battens, characterized in that it comprises a collector of the air preheated by the cover elements, arranged perpendicularly to the slope line of the roof.
• the air collector is disposed on the under-roof screen, and a height less than or equal to that of the counter-battens.
• the air collector consists of modular elements, in the form of hollow tubes, connected to each other.
• each modular element has on its faces, openings individually adjustable passage section.
• the manifold carries at one end a connection piece to a suction duct.
• the collector consists of several collector bodies, joined at one end by a common piece of connection to the sheath.
• the connecting piece comprises a non-return valve.
• the non-return valve is controlled to control the flow of hot air collected.
• the collector consists of a base, a corrugated upper face and walls or side faces.
• the corrugated upper face has corrugations intended to be housed in the curve of the roofing tiles.
• At the top of the corrugations are arranged adjustable openings.
• the side faces are provided with adjustable openings.
• the base comprises an orifice to which the suction duct is connected.
• the invention also relates to the use of the solar gain recovery system mentioned above for the supply of energy recovery equipment of a building.
• the solar gain recovery system mentioned above is used for supplying the heat source of a heat pump.
• FIG. 1 shows a perspective view of a traditional sloping roof organized for the implementation of the solar gain recovery system, according to the invention
• FIG. 2 represents a first exemplary embodiment of an air collector
• FIG. 3 shows a second embodiment of an air collector
• FIG. 4 shows an exploded view, a third embodiment of an air collector.
• the traditional sloping roof of a detached house is the one that benefits the most solar inputs, because of its large area and its favorable orientation to sunshine.
• the temperature of the terracotta tiles can be higher than the temperature of the outside air, of more than 10 ° C in the winter, and of more than 30 ° C in the summer.
• the clay roof is a valuable source of calories for the energy performance of the building.
• FIG. 1 schematically shows a traditional sloping roof organized for the implementation of the solar gain recovery system, and whose structure is described from bottom to top.
• a screen 2 of under-roofing On the rafters 1 is disposed a screen 2 of under-roofing, maintained on the rafters 1 by counter-battens 3 superimposed on the rafters 1, according to the slope line of the roof.
• an insulator Between the rafters 1 and under the screen 2 of under-roofing is provided an insulator, not shown.
• Perpendicular to the counter-battens 3 are fixed battens 4 which carry the cover elements 5, such as tiles and accessories.
• an air gap 6 is developed whose thickness corresponds to the height of the counter-battens 3 and the battens 4.
• This air gap 6 is preheated by the covering elements 5.
• a manifold 7 of air carrying at one end a connecting piece 8 to a suction duct 9, which supplies the energy recovery equipment of the building.
• the collector 7 is disposed perpendicularly to the slope line of the roof. In the example shown, it is of parallelepipedal shape, and of a height less than or equal to that of the counter-battens 3. It is preferably constituted by modular collector elements, in the form of hollow tubes, preferably parallelepipedic, connecting to each other to form a collector of the desired length ( Figure 2).
• the collector elements are made of plastic, composite or metal, for example. On their downstream faces, upstream and upper, they have openings 11 to section of individually adjustable passage, together constituting a device for balancing and homogenizing the suction of the preheated air in the air gap 6.
• the end face 12 of the end element 10 of the collector 7 is closed.
• the connecting piece 8 to the sheath 9 is advantageously equipped with a nonreturn valve, controlled or not, for example a metal valve memory shape.
• the non-return valve makes it possible to control the flow of hot air collected and sent into the sheath 9, and to avoid any disturbance of the natural ventilation on the roof when there is no suction.
• the piloted flap participates in the realization of a recovered energy management system.
• the collector 7 consists of two collector bodies 13, 14 joined at one end by a common connecting piece 8, equipped with a non-return valve, and connected to a 9 unique sheath.
• the two collector bodies 13, 14 are parallel, but they can be aligned on either side of the connecting piece 8.
• the modular structure of the collector 7 makes it possible to adjust its length according to the singular points of the roof, such as chimney, roof outlet, roof window, solar panel, for example.
• the collector 7 can be installed at any point of the roof (ridge, sewer, plain square) both during the realization of the roof, or during its renovation.
• the counter-battens 3 are interrupted over the width of the collector 7. Since the height of the collector 7 is less than or equal to that of the counter-battens, and the collector has sections air flow both on the downstream and upstream sides, the circulation of air preheated by the cover elements is always ensured in the absence of suction by the sheath 9.
• suction by the sheath 9 the individual adjustment of the passage section of the openings 11, both on the downstream and upstream sides and on top of the manifold 7 ensures a balancing of the recovery of air preheated by the tiles. This results in a balanced and homogeneous recovery of the air located in the air space 6 under a traditional sloping roof.
• the collector is adapted to large curved tiles, such as channel tiles or interlocking tiles called large molds south.
• the collector 7 consists of a base 13, a corrugated upper face 14 and walls or side faces 15.
• the corrugated upper face 14 has undulations 16 intended to be housed in the curve of the roof tiles.
• adjustable openings 16 At the top of the corrugations 16 are arranged adjustable openings 17.
• the manifold 7 Between the base 13 and the corrugated upper face 14, the manifold 7 has side faces 15 whose profile is adapted to the corrugations 16.
• the side faces are provided with adjustable openings 18.
• the base 13 has an orifice 19 to which the suction duct 9 is connected.
• the two ends of the collector 7 are closed by crosspieces 20.
• the collector 7 of Figure 4 is provided to ensure the suction of hot air closer to the tiles of the cover.
• the collector 7 is placed on the counter-battens 3 with its large dimension perpendicular to the counter-battens 3.
• the upper openings 17 and the side openings 18 are adjustable, so as to control the flow of air passing through these openings.
• the air gap 6 which circulates between the under-roof screen 2 and the cover elements is preheated by the solar gains on the cover elements.
• the equipment for upgrading the aforementioned solar inputs for example during times of high demand for electricity.
• the solar energy recovery system reduces the annual energy consumption of the building (up to 5 kWh / m2.year).
• the recovery system is able to be integrated in a simple and low cost way in a new construction or renovation. Finally, it has the advantage of preserving the aesthetics of the traditional sloping roof.
• collectors upstream and downstream of photovoltaic panels These panels, whose purpose is to transform solar energy into electricity, heat up significantly and are therefore an interesting source of calories to collect.

Landscapes

• Engineering & Computer Science (AREA)
• Architecture (AREA)
• Civil Engineering (AREA)
• Structural Engineering (AREA)
• Physics & Mathematics (AREA)
• Life Sciences & Earth Sciences (AREA)
• Sustainable Development (AREA)
• Sustainable Energy (AREA)
• Thermal Sciences (AREA)
• Chemical & Material Sciences (AREA)
• Combustion & Propulsion (AREA)
• Mechanical Engineering (AREA)
• General Engineering & Computer Science (AREA)
• Roof Covering Using Slabs Or Stiff Sheets (AREA)
• Photovoltaic Devices (AREA)

Applications Claiming Priority (2)

Publications (1)

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Family Cites Families (9)

• 2011
  • 2011-04-20 FR FR1153414A patent/FR2974375B1/fr active Active
• 2012
  • 2012-04-18 WO PCT/FR2012/050851 patent/WO2012172214A1/fr active Application Filing
  • 2012-04-18 EP EP12722436.8A patent/EP2699740A1/de not_active Withdrawn

Non-Patent Citations (1)

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