Inertial thermal solar panel device

Abstract

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Description

Title of the invention: Inertia solar thermal panel device

[0001] The present invention relates to an inertia solar thermal panel device.

[0002] Many solar thermal panel devices are already known whose main objective is to transform solar energy into thermal energy for the production of hot water. Depending on the field of application, this hot water can be used directly to heat the water in a basin such as a swimming pool, just as it can contribute, through a heat exchanger, to heating a secondary domestic hot water network or heating a home.

[0003] There are different solar thermal panel technologies. Thus, flat glazed panels are known in the form of a box of low thickness compared to its length and width, comprising a base in which an insulator resistant to high temperatures is positioned. On this insulator is usually positioned a reflector above which extends a network of heat transfer fluid pipes. A solar radiation absorbing plate, also called an absorber, rests on these pipes, while the box is finally sealed by a glass plate. This, often chosen in tempered glass, creates a greenhouse effect to promote the heating of the heat transfer fluid in the various pipes.

[0004] Also known are vacuum tubular collectors comprising a plurality of glass tubes placed next to each other on a panel-shaped support structure. Inside a tube, maintained under vacuum to prevent heat loss, extends a loop of copper pipe to the rear of an absorber.

[0005] Thermal solar panels as described above operate with very little inertia and peak effects in the sense that they are able, under the impact of solar rays, to bring the heat transfer fluid passing through them very quickly and to a high temperature, this heat transfer fluid falling back just as quickly in temperature in the absence of sunshine. It is therefore essential to associate with such known thermal solar panels a heat transfer fluid buffer tank making it possible to attenuate these sudden variations.

[0006] However, during prolonged periods of sunshine and therefore significant production of heat transfer fluid at high temperature, installations incorporating such thermal solar panels are often put to the test, particularly when the heat transfer fluid reaches its boiling temperature.

[0007] Finally, these thermal solar panels can be criticized for a lack of inertia and an all-or-nothing operation depending on the presence or absence of solar radiation.

[0008] In addition, such known thermal solar panels are usually of complex and expensive design due to the materials used: metallic structure, generally in aluminum, of the panel, transparent surface in tempered glass, network of heat transfer fluid pipes in copper, etc.

[0009] Furthermore, the size of these thermal solar panels is necessarily limited by the standard dimension of a tempered glass panel, but, more generally still, by the maximum weight that such a panel can have to be easily handled in order to allow its installation on a roof, in particular.

[0010] It is within the framework of a first inventive approach that an inertia solar thermal panel device was imagined, that is to say capable of absorbing and storing, in particular through a primary heat transfer fluid, calories resulting from solar radiation, but also of preventing, or at least reducing, thermal flows, in particular by convection and conduction between the primary heat transfer fluid and the external environment of this inertia solar thermal panel device.

[0011] As part of a second inventive approach, it has also been imagined to store the primary heat transfer fluid in storage units in such a solar panel device so as to contribute to the heating of a secondary heat transfer fluid passing through this inertia thermal solar panel device between an inlet pipe and an outlet pipe while passing through a heating enclosure containing the primary heat transfer fluid storage units.

[0012] The attached drawings illustrate the invention:

[0013] [Fig.l] [Fig.l] shows schematically and in perspective the inertia solar thermal panel device according to the invention.

[0014] [Fig.2] [Fig.2] shows schematically and in cross-section a thermal solar panel device with inertia according to a first embodiment;

[0015] [Fig.3] [Fig.3] shows schematically and in cross-section a thermal solar panel device with inertia according to a second embodiment;

[0016] [Fig.4] [Fig.4] is a schematic representation of a longitudinal section along IV-IV of [Fig.2] and 3;

[0017] [Fig.5] [Fig.5] is a schematic side view of an inertia solar thermal panel device according to the invention comprising peripheral interlocking means.

[0018] The present invention relates to an inertia solar thermal panel device 1 as visible in the various figures of the attached drawings.

[0019] This thermal solar panel device 1 essentially comprises a peripheral wall 2. If this thermal solar panel device 1 is shown in the figures in the shape of a rectangular parallelepiped, considerably facilitating its design. It is obvious that the present invention cannot be limited to such a shape.

[0020] Thus, this inertia solar thermal panel device 1 comprises a top wall 3, a bottom wall 4, a first side wall 5 at a first lateral end and a second side wall 6 at a second lateral end. It also comprises a front wall 7 and a rear wall 8. All of these walls, namely the peripheral wall 2, the front wall 7 and the rear wall 8, delimit an interior volume 9 of this inertia solar thermal panel device 1.

[0021] According to the invention, at least the peripheral wall 2 is preferably made of a rigid insulating material. Advantageously, this peripheral wall 2 is made of extruded polystyrene commonly known as XPS.

[0022] According to a first embodiment visible in [Fig.2], the rear wall 8 of this thermal solar panel device 1 is also made of a rigid insulating material, in particular extruded polystyrene.

[0023] According to the invention, the front wall 7 is substantially constituted, from the external side 10, in the direction of the internal volume 9 of this device 1: • at least two plates of translucent material 11, 11a, 11b, 11c, 11d, preferably transparent, spaced apart by a blade 12, 12a, 12b, 12c of a gaseous fluid which may be air; • of an absorbent plate 13 of light radiation spaced by a blade 12d of a gaseous fluid, in this case air, relative to the plate of translucent material 1 Id on the internal side 14 to the internal volume 9 of this front wall 7.

[0024] According to a feature of the invention, in the interior volume 9 of this device 1, between a bottom 15 defined by the rear wall 8 and the absorbent plate 13, there is arranged at least one, preferably a plurality of heat transfer fluid storage units 16. Advantageously, these are at least in contact with the absorbent plate 13.

[0025] The plates of translucent material 11, 11a, 11b, 11c, 11d, preferably transparent, are made of a synthetic material of the polycarbonate, polyester, acrylic type, etc., the invention not being limited to this list of materials.

[0026] The width of the gaseous fluid blades 12, 12a, 12b, 12c, preferably air, between the translucent, preferably transparent plates 11, 11a, 11b, may be between 0.5 cm and 5 cm, preferably between 1 cm and 3 cm. Advantageously it is of the order of 2cm. Note that this width of the air blades 12, 12a, 12b, 12c is not necessarily identical between all the plates 11, 11a, 11b, 11c, 11d.

[0027] Similarly, the gaseous fluid blade 12d between the absorbent plate 13 relative to the translucent material plate 11d on the internal side 14 to the internal volume 9 of this front wall 7 can be between 0.5 cm and 5 cm, preferably between 1 cm and 3 cm. Advantageously, it is of the order of 2 cm.

[0028] According to the invention, the plates of translucent, preferably transparent, material, 11, 11a, 11b, 11c, 11d, as well as the absorbent plate 13 are inserted into suitable grooves 17 which the top wall 3, the bottom wall 4, the first side wall 5 and the second side wall 6 comprise on their side 18 oriented towards the interior volume 9 of the panel device 1. Advantageously, they are glued into said grooves 17.

[0029] As regards the heat transfer fluid storage units 16, they can be designed from recycled bottles made of synthetic material, for example Polyethylene Terephthalate (PET). The heat transfer fluid contained in such a storage unit 16 can be water, preferably demineralized, possibly with the addition of an antifreeze product, such as alcohol or other.

[0030] According to the invention, the inertia solar thermal panel device 1 also comprises a circuit 19 of a secondary heat transfer fluid extending between an inlet pipe 20 and an outlet pipe 21 passing through a heating enclosure 22 delimited by the interior volume 15 and the storage units 16 of primary heat transfer fluid.

[0031] Thus, this secondary heat transfer fluid, which can again be air, heats up on contact with the storage units 16 between the inlet and the outlet of the panel device 1. This heated air can then be used to heat a home, for example.

[0032] In the embodiment variant visible in [Fig. 3], the rear wall 8 of the panel device 1 according to the invention is designed in a similar manner to the front wall 7.

[0033] Thus, this rear wall 8 is substantially constituted, from the external side 10, in the direction of the internal volume 9 of this device 1: - at least two plates of translucent material 11, 11a, 11b, 11c, 11d, preferably transparent, spaced apart by a blade 12, 12a, 12b, 12c of a gaseous fluid which may be air; - of an absorbent plate 13 of light radiation spaced by a blade 12d of a gaseous fluid, in this case air, relative to the plate of translucent material 1 Id on the internal side 14 to the internal volume 9 of this front wall 7.

[0034] Advantageously, the heat transfer fluid storage unit(s) 16 are at least in contact with this absorbent plate 13 of the rear wall 8.

[0035] According to yet another feature of the invention, this inertia solar thermal panel device 1 comprises on the external side 23 of the top wall 3 and the bottom wall 4 and / or the first side wall 5 and the second side wall 6 reciprocal interlocking means 24 of the male / female type designed to interlock, as the case may be, two panel devices 1 one on top of the other and / or one next to the other. Such reciprocal interlocking means may take the form of a groove 25 and a tongue 26.

[0036] Such panel devices according to the invention are capable of constituting construction modules. 1. Inertia solar panel device 2. peripheral wall 3. top wall 4. bottom wall 5. side wall 1 6. side wall 2 7. front wall 8. rear wall 9. interior volume 10. outer side of 7 11. transparent plates lia, 11b, 11c, 1 Id 12. air blade 12a, 12b, 12c, 12d 13. absorbent plate 14. inner side of 7 15. background 16. storage unit 17. grooves 18. inner side of 3, 4, 5, 6 19. secondary circuit 20. inlet pipe 21. outlet pipe 22. Heating enclosure 23. External side of 3, 4, 5, 6 24. Nesting means 25. Groove 26. tongue

Claims

[Claim 1] Claims 0

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