CH717218A2 - Reversible radiant panel, allowing ventilation of a room, system and construction comprising such a panel. - Google Patents

Abstract

The invention relates to a reversible radiant panel (10), further allowing ventilation of a room (50), comprising: a ventilation box (11) comprising a heat exchanger (13) distributed in said ventilation box (11). ), and an outer casing (21) delimiting a radiating space (22) and the outer wall of which is transparent or translucent to infrared radiation, in which the ventilation box (11) has a peripheral outline on which an inlet of ventilation air (14) and a ventilation air outlet (15) remote from each other to allow ventilation air circulation along the heat exchanger (13), the panel comprising in besides the blowing openings (16) communicating with the ventilation air outlet (15) of the ventilation box (11), whereby the ventilation air is able to exit from the panel (10) radiating in the direction of one piece (50).

Description

Technical area

The present invention relates to the field of heating or cooling devices for premises. The present invention relates in particular to reversible radiant panels and systems for ventilating a room.

The creation and maintenance of a pleasant and healthy environment in the premises of a building allows the conduct of commercial or private activities in a suitable manner throughout the year. In particular, the creation and maintenance of predefined temperature conditions in a room makes it possible to reduce seasonal inconveniences and to react quickly to variations in thermal loads. The radiant ceiling is the only heating / cooling system which allows a minimum circulation of air, and thus of dust. This has a very positive effect on health. At the end of the '90s the first administrative buildings were equipped with radiant ceilings, first for cooling, then also for heating. More recently, this technique is used in different types of buildings. Due to the cost of installation, other air conditioning techniques are still widely used, although radiant ceilings are more energy efficient and provide greater comfort.

State of the art

We know from FR3069261des efficient and aesthetically pleasing modular radiating elements incorporating a sound absorption function, which can be placed directly one by one and in the desired number directly under the ceiling of a room. However, they do not have a room ventilation function.

[0004] Document EP1959207provides a technical ceiling for the treatment of air which comprises several adjacent and spaced cooling elements, arranged under the ceiling, alternately of acoustic damping elements, the space of the technical ceiling being closed by a film or a stretched fabric. An air supply duct extends along each cooling element, this duct further comprising an air outlet directed upwards or to the side. This arrangement is intended to cover the entire surface of a ceiling, and requires laying with many steps for the successive installation of each cooling element and each acoustic damping element, before closing the space under the ceiling with the film or fabric stretched.

Brief summary of the invention

One of the aims of the present invention is to provide a solution which makes it possible to easily produce a technical ceiling or a technical wall of a room, ensuring the heating or cooling of this room by radiation in an improved manner and which also allows ventilation of this room by convection.

Another object of the invention is to provide a reversible radiant panel improved compared to the state of the art and which allows ventilation of a room.

Another object of the invention is to provide a radiating and ventilation system which is free from the limitations of known installations, in particular which allows rapid implementation in a room to be treated.

According to the invention, these goals are achieved in particular by means of a reversible radiant panel, further allowing ventilation of a room, comprising: a ventilation unit of generally planar shape, delimiting a ventilation space, and comprising a heat exchanger distributed in said ventilation unit for the circulation of a heat transfer fluid or coolant in a fluid circulation path between an inlet and an outlet fluid, and an outer casing extending the ventilation box at least facing the heat exchanger, delimiting a radiating space, separated from and superimposed on said ventilation space, and whose outer wall, opposite the ventilation box, is transparent or translucent to infrared radiation. The ventilation box has a peripheral contour to which are connected a ventilation air inlet and a ventilation air outlet, said ventilation air inlet and said ventilation air outlet being spaced apart from one another. the other to allow ventilation air circulation along the heat exchanger in the ventilation space. In addition, the panel comprises, in addition to blowing openings communicating with the ventilation air outlet of the ventilation box, whereby the ventilation air is able to exit from the radiating panel towards a room.

It is understood that this panel delimits two separate superimposed spaces, one for the circulation of ventilation air which runs alongside the heat exchanger before flowing into a room via the blowing openings, and the other to form and contain radiations resulting from the passage of the coolant or secondary coolant in the heat exchanger, which radiations will generate heating or cooling of the room.

This solution has the particular advantage over the prior art of allowing the heating or cooling of the room of a building simultaneously by radiation and by convection. In addition, this solution offers ease of installation because the panel forms a module capable of being placed directly against a wall of the room, in particular directly under the ceiling or the slab forming the ceiling of the room to be treated. This dual function in a modular element which forms an independent island makes it possible to quickly and easily equip a room with a view to heating or cooling it efficiently.

According to one embodiment, the ventilation box defines several sides; also said ventilation air inlet and said ventilation air outlet are connected on opposite sides of said ventilation housing. Such an arrangement makes it possible to optimize the quality of the heat exchange between the ventilation air circulating in the ventilation box and the heat exchanger. In fact, this makes it possible to have a maximum surface area of the heat exchanger which is swept by the ventilation air as it travels between the inlet and the outlet of the ventilation air.

[0012] According to one embodiment, said heat exchanger is placed at the bottom of the ventilation box. In particular, the heat exchanger has a generally planar shape. Such an arrangement allows one of the two faces of the heat exchanger to be in contact with the ventilation air circulating in the ventilation box, between the inlet and the outlet of the ventilation air, and on the other side of the heat exchanger facing the outer casing to dissipate thermal energy (heat or cold) in the direction of and into the radiating space. According to one possibility, said heat exchanger forms the bottom of the ventilation box: this reduces the number of components and simplifies the assembly of the panel.

[0013] According to one embodiment, said outer wall of the outer casing is a first stretched fabric which is transparent or translucent to infrared radiation. This outer wall is the wall of the outer casing intended to be turned in the direction of the room to be cooled or to be heated and ventilated. In the case where the panel is placed on the ceiling of the room, this outer wall of the outer casing forms the lower wall of the panel. More generally, this outer wall of the outer casing is transparent or translucent to infrared radiation and may be of another nature. Such an arrangement allows the thermal energy accumulated in the outer casing to easily dissipate by radiation in the volume of the room where the reversible radiant panel is located.

[0014] According to one embodiment, this first stretched fabric comprises micro-perforations. Such an arrangement improves the sound absorption properties of the stretched fabric, and therefore of the reversible radiating panel. A reversible radiant panel is thus obtained, acting by radiation and by convection in the room to be treated, and also ensuring sound absorption properties.

[0015] According to one embodiment, the radiating and ventilation panel further comprises a lighting module with LED lamps regularly distributed in the outer casing, under the ventilation box.

A reversible radiating panel is thus obtained, acting by radiation and by convection in the part to be treated, and also ensuring the lighting of the part to be treated. As will be discussed in more detail later, light not only serves visual requirements, but also has emotional and biological effects on people.

Also, according to the invention there is provided a radiating and ventilation system comprising a panel as described above, an air blowing ventilation box communicating with said ventilation air inlet of the ventilation box and suitable to send air, and an air return ventilation box capable of sucking air and communicating with air return openings in communication with said room. A complete set is thus obtained for heating (or cooling) a room by radiation and by convection, while ventilating it with a function of renewing the air in the room thanks to the suction of the air from the room by the return air ventilation box, and the blowing of heated or cooled air into the room by the air supply ventilation box.

The controlled renewal of the air in a building aims to maintain the well-being of the occupants and their high concentration capacity. From an energy point of view, simply opening windows is no longer relevant, so mechanical ventilation with energy recovery is installed in almost all new buildings.

Also, according to the invention there is provided a construction, such as a building, delimiting at least one room to be treated by ventilation and radiant heat exchange, said construction comprising at least one panel as described above, said panel being mounted against a wall of the room. We can indeed mount the radiating panel according to the invention different types of wall, whether on the front face of a wall or a vertical partition wall or on a ceiling, regardless of the nature of the wall. this ceiling, including directly on a slab.

According to one embodiment, the ventilation box does not have a rear wall (on the opposite side and parallel to the heat exchanger) and forms an enclosed space once the panel is mounted against the wall of the room to be treated because it is this wall of the part to be treated (front face of a vertical wall or ceiling) which closes the space of the ventilation box.

According to one embodiment, the construction defines at least one room to be treated by ventilation and radiating heat exchange and further defines a technical room adjacent to said room to be treated, said construction comprising a radiating and ventilation system with boxes and in the extension of the peripheral contour of the panel. This embodiment provides that said air return ventilation box and said air blast ventilation box are arranged in said technical room with an air return ventilation duct connecting said return air ventilation box. 'air to said air intake openings through a partition wall between said room and said technical room and with a blowing ventilation duct connecting said blowing ventilation box to said ventilation air inlet through said ventilation wall separation.

Brief description of the figures

Examples of implementation of the invention are indicated in the description illustrated by the appended figures in which: Figure 1 illustrates schematically in longitudinal section a radiating panel according to a first embodiment of the invention, integrated in a radiating and ventilation system, the panel and the system integrating the panel being mounted in a construction for the treatment of a room , FIG. 2 shows in a simplified manner and in semi-transparency, from a lateral side, a radiating panel according to a second embodiment of the invention, integrated in a radiating and ventilation system, FIG. 3 represents the radiating panel and the radiating and ventilation system of FIG. 2, in perspective from the internal face of the panel (face opposite the part to be treated), and FIG. 4 represents the radiating panel and the radiating and ventilation system of FIGS. 2 and 3, in perspective from the external face of the panel (face facing the part to be treated).

Example (s) of embodiment of the invention

Reference is made to Figure 1 schematically showing a reversible radiating and ventilation panel 10mounted in a construction 100pour treating a room 50. The panel 10 has a generally flat shape and was placed against the ceiling 51which can be limited to the slab of separation from the area above room 50.

In its upper part (top in Figure 1), the panel 10comporte a ventilation box 11 delimiting a ventilation space 12 between the ceiling 51 (top in Figure 1), a heat exchanger 13 (bottom on Figure 1) and a peripheral outline 11a formed of a folded sheet metal box at the bottom of which is mounted the heat exchanger 13 which forms the bottom of this box.

This heat exchanger 13 can take on different designs. In one embodiment, it is a high performance heat exchanger with full irrigation, composed of two stainless steel sheets, in which squares have been stamped at regular intervals, the two sheets being held together by means of resistance welding. The fully irrigated heat exchanger 13 is connected to the building's distribution pipes via hydraulic connections (not shown), which transport the coolant (hot fluid) for heating or a coolant (cold fluid) for cooling to at the inlet (and from the outlet) of the heat exchanger fluid circulation path 13.

According to an arrangement visible in Figure 1, the ventilation space 12formed in the ventilation box 11 confine a ventilation air flow between a ventilation air inlet 14 (left in Figure 1) and a ventilation air outlet 15 (on the right in figure 1). In this way, a ventilation air circulation is formed throughout the ventilation space 12. This advantageously allows this ventilation air to run along the upper face of the heat exchanger 13 over a large area of the latter (arrow Fe in Figure 1). This air having been heated (or cooled) in the ventilation space 12, then leaves the panel 10 naturally through the ventilation air outlet 15 (arrow Fv), and this because in parallel air is blown by the ventilation air inlet 14.

In the example of Figure 1, the ventilation air inlet 14 and the ventilation air outlet 15 are on opposite sides of the ventilation space, but more generally the air inlet of ventilation 14 and said ventilation air outlet 15 are not placed on adjacent sides of the ventilation housing.

The radiating space 22est directly above the ventilation space with the heat exchanger 13 which separates them. The radiating space 22 is therefore delimited in the outer casing 21 by the heat exchanger 13 (at the top in FIG. 1), the first stretched fabric 23 (at the bottom in FIG. 1) and a peripheral contour 21a formed of a waterproof wall at the bottom of which is mounted the first stretched canvas 23. This first stretched canvas 23 is transparent or translucent to infrared radiation to allow the radiation through it of thermal energy (heat or cold) outside the radiating space 22and in the direction of the part to be treated 21. The visual appearance of this first stretched canvas 23 which forms the external face (lower face in FIG. 1) of the panel 10 allows the panel 10 to be given an appearance chosen according to the type of activities and the environment of the part to be treated: sophisticated, neutral, sober, classic, and this in particular by the color, the relief, the patterns, the material (s) composing it, its thickness .....

This gives a radiating space 22clos, separate and without air communication with the ventilation space 12.

The above description corresponds to the minimum components of the panel 10selon the invention which allows to heat (or cool) and also to ventilate a room.

In order to improve the properties of the panel 10, the latter may further comprise, as illustrated in FIG. 1, one or the other of the following arrangements-

According to one arrangement, the panel 10 furthermore comprises a second stretched canvas 24 disposed in the outer casing 21, between the first stretched canvas 23 and the ventilation box 11, this second stretched canvas 24 being transparent or translucent to infrared radiation , in order to contribute to the radiating effect of the panel 10. This second stretched canvas 24, like the first stretched canvas 23, can be of different types, for example a canvas or a coated fabric, for example a polyester canvas coated with polyurethane . This second stretched canvas 24, like the first stretched canvas 23, can be stretched over a peripheral ring which is mounted on the frame forming the peripheral contour 21a of the outer casing 21, which allows easy assembly and disassembly, without tools.

According to one arrangement, the outer wall of the outer casing 21, which is in the example of Figure 1a first stretched canvas 23. carries micro-perforations. These micro-perforations improve sound absorption and help to increase the quality of the acoustic treatment of the panel 10. This arrangement can also be applied to the second stretched fabric 24 when it is present in the panel, or only to the second stretched fabric. 24, or both to the first stretched fabric 23 and to the second stretched fabric 24. As an indication, these micro-perforations have a diameter of less than 1 mm, preferably between 0.05 and 0.2 mm, for example of the order of 0.1mm; and this with a perforation rate of between 0.5 and 2% of the surface of the stretched fabric, for example approximately 1% of the surface of the stretched fabric.

According to one arrangement, a lighting module 25est integrated into the panel 10, with LED lamps distributed throughout the radiating space, directly under the heat exchanger 13 (at the top of the radiating space 22 in FIG. 1 ). The panel 10 has the electrical connections necessary for the LED lamps to be supplied with electrical energy. According to one arrangement, these LED lamps have a defined color temperature. According to one arrangement, these LED lamps are compatible with an intensity variator to make it possible to adjust the light intensity of the lamps and thus the power of their lighting. LEDs can be chosen with a color rendering index or CRI of less than 90. According to one arrangement, the lighting module 25 also comprises a management module (not shown) making it possible to vary the color temperature of the LED lamps during the course. of a day, said color temperature of the lamps belonging to the interval between 2700 ° K and 6000 ° K. Thus, it is possible to simulate the solar cycle. In one embodiment of the lighting module 25, it further comprises a photometric cell (not shown) placed outside the ventilation box 11 and the outer casing 21, this photometric cell being oriented towards the room, and allowing the management module to vary the color temperature of LED lamps according to natural lighting.

This is a modern lighting concept which takes into account not only visual but also non-visual lighting effects and which promote the well-being, mood and health of people. Such a lighting concept is people-oriented („Human Centric Lighting“, abbreviated: HCL) and uses the ability of certain cells in the retina of the eye which are not used for vision to set the internal clock. . This significantly improves the quality of life of people by transferring the interaction of natural lighting and its biological effect in all spaces of the interior. Thus, it is possible not only to bring daylight into the room to be treated, but also to supplement it with artificial light in the appropriate brightness and color temperature as required. Thus, it is possible for the lighting module 25 to also take into account the biological efficiency of light, and this via dynamic light with changing brightness and light colors: we can thus strengthen the human biorhythm, promote good. -being and health of people in room 50, for example preventing sleep disorders, ensuring more efficiency and concentration for people in room 50, creating stimulating lighting for more vitality and quality of life ...

For example, the LED lamps are arranged in strips positioned on aluminum profiles mounted using clips on the frame forming the peripheral contour 21a of the outer casing 21, which allows mounting and easy disassembly, without tools. This in-line arrangement of the LED lamps does not hinder the dissipation of heat radiating from the heat exchanger 13 located above the LED lamps. This in-line arrangement of the LED lamps allows regular spacing between all the LED lamps which results in uniform illumination on the surface of the panel 10. Also, this in-line arrangement of the LED lamps makes it easier to replace the LED lamps in the event of non-operation. , only one tape needs to be replaced.

In the presence of this lighting module 25 and the second stretched canvas 24, the latter ensures the diffusion of light in the direction of the part 50.

It is understood that this panel as described above and illustrated in Figure 1 allows to achieve simultaneously in the room 50 to treat the heating (or cooling), sound absorption, ventilation with air renewal and the lighting with a positive influence on the biological rhythm of the people present in the room 50.

To form a complete radiating and ventilation system, the panel 10, previously described, is supplemented by other ancillary equipment. First, an air blowing ventilation box 32 communicates with the ventilation air inlet 14 of the ventilation housing 11, and this via a blowing ventilation duct 32a. This air blowing ventilation box 32 is able to send air into the ventilation space 12. Secondly, an air return ventilation box 34 is able to draw air through openings. air intake 35 in communication with room 50 (arrow Fr). The boxes 32 and 34 are connected to the pipes of the central air renewal system of the building, respectively for the arrival of outside air for the renewal of air in the room 50 (box 32) and for the evacuation of the air. 'waste air out of the room 50 (box 34) through air intake openings 35 located outside the ventilation box 11 and outside the outer casing 21.

These boxes 32 and 34 are placed near the panel 10, along one of its sides, on the other side of the separation wall 53 from the part 50, which makes them invisible from the part 50 For this purpose, a supply air ventilation duct 32a connects the supply air ventilation box 32 to the ventilation space 12, and an air return duct 34a connects the air return ventilation box 34 to the return openings. air 35 (arrow Fa), these two ducts 32a and 34a pass through the partition wall 53. According to an advantageous embodiment, said air intake ventilation box 34 and said air blowing ventilation box 32 are placed in the extension of the peripheral contour of the panel 10, namely in the horizontal extension of the panel 10 as can be seen in FIG. 1. More generally, said air blowing ventilation box 32 and said air blowing ventilation box air intake 34 are close to the peripheral contour of the panel, and can be adjacent to each other as in the case of Figure 1, so that the air intake openings 35 are adjacent to the ventilation air inlet 14. Thus, thanks to this lateral connection boxes 32 and 34 on the panel, the latter do not increase the thickness of the panel 10 and this makes it possible to keep a comfortable ceiling height for the room 50.

In the case of Figure 1, the boxes 32 and 34 were housed in a technical room 52forming the upper part of the corridor 54 located on the other side of the room 50 with respect to the partition wall 53, with the ventilation duct air outlet 32a and the return air duct 34a. In this way, the ventilation boxes 32 and 34 are not visible from the room 50.

In this way, we constitute, thanks to the panel 10formant an island quickly and simply installed, a technical ceiling for treating the room 50 by combining heating or cooling, acoustic treatment, air renewal and lighting, and this in a single element, essentially pre-assembled, which makes it possible in particular to simplify the coordination of the construction project and to reduce the costs of the system 100.

One can imagine that this assembly of Figure 1 is applicable to the installation of the panel 10 against a wall of the room to be treated which is not the ceiling 50, for example against the face of the separation wall 53 of Figure 1 which is turned towards the room 50. In this case, the boxes 32 and 34 could remain housed in the technical room 52 forming the upper part of the corridor 54 adjoining the room to be treated 50, with the blowing ventilation duct 32a and the air return duct. air 34a elbows.

Reference is made to Figures 2 to 4 illustrating a second embodiment of the panel 10, the same reference signs as those of the first embodiment previously described in relation to Figure 1 having been retained.

We find the ventilation box 11 in the upper part of the panel 10, with the heat exchanger 13forming the bottom of the ventilation box 11 which is open on the side opposite the bottom. On the structure forming the peripheral contour 11a of the ventilation unit 11 are shown hydraulic connections 13a intended for the entry and exit of the fluid in the heat exchanger, and electrical connections 26 for supplying the lighting module 25 mounted under the 'heat exchanger 13. Also seen in FIG. 2 are fixing elements 36 allowing mounting on the ceiling 51 or more generally on the wall of the part to be treated 50, for example in the form of threaded rods cooperating with plugs of the type crampon.

In this second embodiment, the outer casing 21 is more extended than the radiating case 11 and contains the radiating case 11. In particular, the outer casing 21 extends the radiating case 11 not only facing the heat exchanger 13au beyond its face turned towards the part to be treated 50, but also the outer casing 21 extends the radiating box 11 along the peripheral contour 11a of the ventilation box. In this case, the first stretched fabric 23, the second stretched fabric 24 and the lighting module 25, which extend parallel to each other and to the heat exchanger 13 in most cases, here extend over a area larger than the heat exchanger 13. Also, the ventilation air outlet 15du ventilation box discharges the air into the room 50 via a blowing slot 16 opening into the peripheral contour 21a of the outer casing 21.

Figures 2 to 4, the outer casing 21receives the ventilation box 11, the outer wall 23of the outer casing 21formed of the first stretched canvas 23is rectangular, the peripheral contour 21a of the outer casing 21 follows this rectangular shape in a plane parallel to the first stretched canvas 23, but with a generating line visible in section of non-rectilinear shape (see FIG. 2): this generating line widens out from the rear edge of the ventilation box 11 (from the ceiling) up to the lighting module 25, then has a section orthogonal to the rear edge of the ventilation box 11 (to the first stretched fabric 23 or to the ceiling) around the radiating space 22, a shoulder protruding above the module 52 then a last section orthogonal to the rear edge of the ventilation unit 11 (to the first stretched fabric 23 or to the ceiling) around the two stretched fabrics 23 and 24. According to an embodiment according to FIG. ure 2, a folded section extends from below the heat exchanger 13, forms the frame surrounding the radiating space 22 (peripheral contour 11a), a section making it possible to receive the fixing elements 36 with airtightness , then forms the aforementioned generating line of the peripheral contour 21a of the outer casing 21 and allows the mounting of the lighting module 25, of the second stretched fabric 24 and of the first stretched fabric 23.

In the examples illustrated, the panel 10, and therefore the ventilation box 11 and the outer casing 21 which together form the panel 10, has (s) a peripheral outline of generally rectangular shape, but it is possible to consider other shapes, including oval, polygonal, octagonal, hexagonal, or even triangular.

Also, in the examples illustrated, a single panel 10est mounted on the ceiling 51. We can provide a radiating and ventilation system as described above, with the boxes 32 and 34 comprising at least two panels 10tas previously presented, for example two panels 10, three panels 10 or more panels 10, said panels 10 being placed in series for the circulation of the ventilation air and for the circulation of the coolant or coolant. In this case, for the installation in series between two panels 10s'acting the circulation of ventilation air, provision is made for the ventilation air inlet of the second panel (downstream panel with respect to the direction of flow ventilation air) is connected to the ventilation air outlet of the first panel (upstream panel in relation to the direction of flow of the ventilation air)

In this case, for the installation in series between two panels 10s'act the circulation of the heat transfer fluid or coolant, the heat exchanger 13d'un panel is in the fluidic extension of the heat exchanger 13d'un other panel 10.

For example, the air renewal is designed so that each element can guarantee an air renewal of up to 120m3 per hour without noise and without drafts.

Thanks to the heat exchanger 13 which is fully irrigated and its uniaxial thermal radiation, its heating and cooling power is up to 30% higher than conventional products available on the market.

The dimensions of the panel 10 in its rectangular parallelepiped shape are by way of example the following: - the width of the panel 10 is between 800 and 1400mm, preferably between 900 and 1200mm and more preferably between 1000 and 1100mm, - the length of the panel 10 is between 1000 and 4000mm, better still between 2000 and 3400mm, but ideally between 2400 and 3000mm, and - the height of the panel 10 in the version without lighting module is between 100 and 200mm, preferably between 110 and 150mm, and more preferably between 115 and 125mm; and the height of the panel 10 with 25 integrated lighting module is between 140 and 240mm, preferably between 150 and 190mm, and more preferably between 155 and 165mm.

Reference numbers used in figures

10 Reversible radiant and ventilation panel 11 ventilation box 11a Peripheral contour of the ventilation box 12 Ventilation space 13 Heat exchanger 13a Hydraulic connection 14 Ventilation air inlet 15 Ventilation air outlet 16 Blowing openings 21 Outer casing 21a Peripheral contour of the outer casing 22 Radiant space 23 Outer wall of the radiant space (first stretched canvas) 24 Second stretched canvas 25 Lighting module 25a Electrical connection 30 Radiant and ventilation system 32 air supply 32a Supply air ventilation duct 34 Return air ventilation box 34a Return air duct 35 Return air openings 36 Fixing element 50 Workpiece 51 Ceiling or wall 52 Adjoining technical room per room 53 Partition wall 54 Corridor 100 Construction Fe Arrow for the direction of air flow along the heat exchanger 13 Fv Arrow for the direction of circulation for the ventilation air leaving the panel 10

Claims (13)

1. Reversible radiant panel (10), further allowing ventilation of a room (50), comprising: - a ventilation box (11) of generally flat shape, delimiting a ventilation space (12), and comprising a heat exchanger (13) distributed in said ventilation box (11) for the circulation of a heat transfer fluid or refrigerant in a fluid circulation path between a fluid inlet and an outlet, and - an outer casing (21) extending the ventilation box (11) at least opposite the heat exchanger (13), delimiting a radiating space (22), separated from and superimposed on said ventilation space (12), and the outer wall of which, opposite the ventilation box (11), is transparent or translucent to infrared radiation, wherein the ventilation housing (11) has a peripheral contour to which are connected a ventilation air inlet (14) and a ventilation air outlet (15), said ventilation air inlet (14) and said ventilation air outlet (15) being remote from each other to allow ventilation air circulation along the heat exchanger (13) in the ventilation space (12), the panel further comprising blowing openings (16) communicating with the ventilation air outlet (15) of the ventilation box (11), whereby the ventilation air is able to exit from the radiating panel (10) towards a room (50). 2. Panel (10) according to claim 1, wherein the ventilation housing (11) delimits several sides, and wherein said ventilation air inlet (14) and said ventilation air outlet (15) are connected. on opposite sides of said ventilation housing (11). 3. Panel (10) according to claim 1 or 2, wherein said heat exchanger (13) is placed at the bottom of the ventilation box (11). 4. Panel (10) according to any one of claims 1 to 3, wherein said outer wall of the outer casing (21) is a first stretched fabric (23) which is transparent or translucent to infrared radiation. 5. Panel (10) according to claim 4, wherein said first stretched fabric (23) comprises micro-perforations. 6. Panel (10) according to claim 4 or 5, further comprising a second stretched canvas (24) disposed in the outer casing (21), between the first stretched canvas (23) and the ventilation housing (11), this second stretched fabric being transparent or translucent to infrared radiation. 7. Panel (10) according to any one of claims 1 to 6, further comprising a lighting module (25) with LED lamps regularly distributed in the outer casing (21), under the ventilation box (11). . 8. Panel (10) according to claim 7, wherein the lighting module (25) further comprises a management module for varying the color temperature of the LED lamps during a day, said color temperature. LED lamps belonging to the interval between 2700 ° K and 6000 ° K. 9. A radiant and ventilation system (100) comprising a panel (10) according to any one of claims 1 to 8, a blowing ventilation box (32) of the air communicating with said ventilation air inlet (14). ) of the ventilation box (11) and able to send air, and an air return ventilation box (34) able to suck in air and communicating with air return openings (35) in communication with said room (50). 10. The system of claim 9, wherein said air return ventilation box (34) and said air blast ventilation box (32) are placed in the extension of the peripheral contour of the panel (10). 11. System according to one of claims 9 and 10, comprising at least two panels (10) according to any one of claims 1 to 8, said panels (10) being placed in series for the circulation of ventilation air and for the circulation of the coolant or secondary fluid. 12. Construction defining at least one room (50) to be treated by ventilation and radiant heat exchange, said construction comprising at least one panel (10) according to one of claims 1 to 8, said panel (10) being mounted against a wall of the part (50). 13. Construction defining at least one room (50) to be treated by ventilation and radiating heat exchange and further delimiting a technical room (52) adjacent to said room (50), said construction comprising a radiating and ventilation system (100) according to claim 10, wherein said return air ventilation box (34) and said air blast ventilation box (32) are arranged in said technical room with a return air ventilation duct (34a ) connecting said air return ventilation box (34) to said air return openings (35) through a partition wall (53) between said room (50) and said technical room (52) and a duct Supply air ventilation (32a) connecting said supply air ventilation box (32) to said ventilation air inlet (14) through said partition wall (53).