EP3160621A1 - Systeme de traitement photocatalytique de l'air d'une piece d'un batiment - Google Patents
Systeme de traitement photocatalytique de l'air d'une piece d'un batimentInfo
- Publication number
- EP3160621A1 EP3160621A1 EP15725638.9A EP15725638A EP3160621A1 EP 3160621 A1 EP3160621 A1 EP 3160621A1 EP 15725638 A EP15725638 A EP 15725638A EP 3160621 A1 EP3160621 A1 EP 3160621A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- opening
- air
- openings
- wall
- configuration
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Withdrawn
Links
Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/34—Chemical or biological purification of waste gases
- B01D53/74—General processes for purification of waste gases; Apparatus or devices specially adapted therefor
- B01D53/86—Catalytic processes
- B01D53/8678—Removing components of undefined structure
- B01D53/8687—Organic components
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F8/00—Treatment, e.g. purification, of air supplied to human living or working spaces otherwise than by heating, cooling, humidifying or drying
- F24F8/10—Treatment, e.g. purification, of air supplied to human living or working spaces otherwise than by heating, cooling, humidifying or drying by separation, e.g. by filtering
- F24F8/15—Treatment, e.g. purification, of air supplied to human living or working spaces otherwise than by heating, cooling, humidifying or drying by separation, e.g. by filtering by chemical means
- F24F8/167—Treatment, e.g. purification, of air supplied to human living or working spaces otherwise than by heating, cooling, humidifying or drying by separation, e.g. by filtering by chemical means using catalytic reactions
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F1/00—Room units for air-conditioning, e.g. separate or self-contained units or units receiving primary air from a central station
- F24F1/0007—Indoor units, e.g. fan coil units
- F24F1/0071—Indoor units, e.g. fan coil units with means for purifying supplied air
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F8/00—Treatment, e.g. purification, of air supplied to human living or working spaces otherwise than by heating, cooling, humidifying or drying
- F24F8/10—Treatment, e.g. purification, of air supplied to human living or working spaces otherwise than by heating, cooling, humidifying or drying by separation, e.g. by filtering
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F8/00—Treatment, e.g. purification, of air supplied to human living or working spaces otherwise than by heating, cooling, humidifying or drying
- F24F8/10—Treatment, e.g. purification, of air supplied to human living or working spaces otherwise than by heating, cooling, humidifying or drying by separation, e.g. by filtering
- F24F8/108—Treatment, e.g. purification, of air supplied to human living or working spaces otherwise than by heating, cooling, humidifying or drying by separation, e.g. by filtering using dry filter elements
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F8/00—Treatment, e.g. purification, of air supplied to human living or working spaces otherwise than by heating, cooling, humidifying or drying
- F24F8/20—Treatment, e.g. purification, of air supplied to human living or working spaces otherwise than by heating, cooling, humidifying or drying by sterilisation
- F24F8/22—Treatment, e.g. purification, of air supplied to human living or working spaces otherwise than by heating, cooling, humidifying or drying by sterilisation using UV light
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2255/00—Catalysts
- B01D2255/20—Metals or compounds thereof
- B01D2255/207—Transition metals
- B01D2255/20707—Titanium
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2255/00—Catalysts
- B01D2255/80—Type of catalytic reaction
- B01D2255/802—Photocatalytic
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2257/00—Components to be removed
- B01D2257/70—Organic compounds not provided for in groups B01D2257/00 - B01D2257/602
- B01D2257/708—Volatile organic compounds V.O.C.'s
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2258/00—Sources of waste gases
- B01D2258/06—Polluted air
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2259/00—Type of treatment
- B01D2259/45—Gas separation or purification devices adapted for specific applications
- B01D2259/4508—Gas separation or purification devices adapted for specific applications for cleaning air in buildings
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2259/00—Type of treatment
- B01D2259/80—Employing electric, magnetic, electromagnetic or wave energy, or particle radiation
- B01D2259/804—UV light
Definitions
- the invention relates to a photocatalyst air treatment system.
- Photocatalysis is based on illumination by solar light or artificial UV illumination of a semiconductor material, for example titanium dioxide TiO 2 , also called photocatalyst or photocatalytic substrate. Illumination has the effect of creating electron-hole pairs on the surface of the semiconductor, via wavelengths in the UV (Ultra-Violet) whose energy is greater than the gap between the valence band and the band of conduction of the semiconductor. Electrons are emitted at the conduction band while holes are formed in the valence band. This phenomenon forms free radicals that are likely to react with compounds present in the surrounding environment, for example air.
- Photocatalysis finds a particularly interesting application in the field of treatment, or purification, of air, especially in an interior space for example a living room. Indeed, it makes it possible to degrade certain chemical pollutants present in the air and to transform them into non-polluting elementary molecules, in particular carbon dioxide C0 2 and water vapor H 2 0.
- the semiconductor generally used in this process case is TiO 2 titanium dioxide.
- the UV energy must be sufficient.
- the light is generally filtered through windows and is not permanent. It is therefore necessary to provide artificial UV emission sources to illuminate the photocatalytic substrate without risk related to direct exposure by the occupant.
- EP1520615 discloses a photocatalyst air treatment apparatus for installation in a living room, comprising:
- a wall comprising a front face and a rear face which delimit an inner housing, the front face providing a low opening for the entry of polluted air and a high opening for the outlet of purified air; one or more expanded steel grids on which a TiO 2 titanium dioxide film is deposited;
- a lighting device comprising UVA lamps intended to activate the Ti0 2 film .
- Grids and lamps are arranged in the inner housing of the wall. Thanks to this, the UV light contribution can be adapted to the needs of photocatalysis while preserving the occupants of the room of a direct contact with the photocatalytic substrate and the UV lamps.
- the present invention proposes to further improve the invention.
- the invention relates to a photocatalytic treatment system of the air of a part of a building having a wall wall, comprising an additional wall, a support structure intended to be arranged in an inner housing delimited by the two walls, a photocatalytic substrate and a lighting device for activating the photocatalytic substrate, characterized in that the two walls, respectively external and internal, each having at least one air outlet, respectively external and internal:
- the support structure comprises at least a valve portion adapted to form air passageways between the inner vent, the external vent and the inner housing, provided with controllable shutter devices;
- the system includes a control module designed to control the opening and closing of the air passageways based on measured data representative of the quality of the outside air and the quality of the indoor air.
- Controlling the opening and closing of the air passageways makes it possible to adapt the configuration of the system according to the pollution conditions (that is to say, the air quality) in the room and outside so as to optimize the regulation of the air quality inside the room.
- the system can take outside air and then blow it indoors, directly or after photocatalytic purification, and / or take the indoor air, purify it and then reinject it inside (in this case we speak of "recycling").
- the photocatalytic substrate can be activated at any time, without exposing the occupants of the room to light rays.
- the system allows a pre-heating of the outside air taken, thanks to the heat released by the lighting device, which makes it possible to increase the temperature of the inner wall and thus to improve the thermal comfort by radiation. .
- valve portion is shaped to act as a spacer between the two walls.
- the two walls can be easily positioned relative to each other during assembly of the system.
- valve part comprises a first external opening intended to be arranged against the external air vent, a second internal opening intended to be arranged against the internal air vent and a third opening of communication with the inner housing, each of the three openings being equipped with a controllable shutter device;
- the support structure comprises two valve parts respectively in the high position and in the low position of the support structure;
- the lighting device is positioned between the two valve parts and mounted on the support structure;
- the photocatalytic substrate is applied to at least one of the support elements of the group comprising the inner face of the additional wall, the inner face of the wall, a metal grid mounted on the support structure;
- valve part comprises particulate filters
- control module is adapted to implement an algorithm for controlling concentrations of pollutants in the air, inside and outside the room comprising a plurality of comparison tests between elements of the group comprising a measured indoor concentration of pollutants, measured outside pollutant concentration and concentration threshold, and, depending on test results, selection of a system configuration from a set of possible configurations;
- the support structure comprising two valve portions, respectively low and high, each having an outer opening, an inner opening and a third opening
- the set of possible configurations comprises all or part of the configurations of the group comprising:
- a third configuration defined by the opening of the upper inner opening, the lower outer opening and the third openings and the closing of the upper outer opening and the lower inner opening;
- a fourth configuration defined by closing the upper outer opening and opening the inner openings, the third openings and the lower outer opening;
- a fifth configuration defined by closing the lower outer opening and opening the inner openings, the third openings and the upper outer opening;
- FIG. 1 shows a view of the system of the invention mounted on a wall
- FIG. 2 represents a view of a support structure of the system of FIG. 1;
- Figures 3A and 3B show the system of Figure 1 before and after mounting on the wall, in top view;
- FIG. 4 represents an exploded side view of the system of FIG.
- FIGS. 5A to 5H schematically represent different possible configurations of the system of FIG. 1;
- FIG. 6 represents another embodiment of the system of the invention.
- FIG. 7 represents a flow chart, or flowchart, of a control algorithm implemented by the system of FIG. 1, according to a particular embodiment example.
- the air treatment system shown in Figures 1 and 2 is intended to treat the air of an interior space located in a building, for example a living room, by photocatalysis.
- the interior space is delimited by at least one wall wall 1 in direct contact, with an outer face, with the outside of the building.
- the treatment system comprises an additional wall 2, a support structure, or carrier structure 3, a photocatalytic substrate 4, a lighting device 5 intended to activate the photocatalytic substrate 4, a control module (or device) (not shown) , pollutant sensors (not shown) and a module (or device) supply (not shown).
- Air circulation fans 7 can also equip the system.
- the additional wall :
- the additional wall 2 is intended to be positioned at a given distance from the wall wall 1, here on the inside of the room, the space between the two walls 1, 2 defining an inner housing 6.
- the additional wall 2 and the wall wall 1 are here called “inner wall” and “outer wall”, respectively.
- the additional wall could be disposed on the other side of the wall wall, outside the living room. In this case, the additional wall would be the outer wall and the wall wall the inner wall.
- Each of the two walls, outer 1 and inner 2 here comprises a high air vent 10H, 20H and a low air vent 10B, 20B, as shown in Figure 3.
- Each vent has a passage opening of air through the wall considered.
- the high air vents 10H, 20H are positioned at the top of the walls and so arranged to the right of each other when the system is put in place.
- the low air vents are positioned in the bottom of the walls so as to be arranged in line with each other when the system is put in place.
- the support structure is:
- the support structure 3, or support structure, is intended to serve as a mounting support for various elements of the system. It also acts as a spacer between the inner wall 2 and the outer wall 1.
- the structure 3 is made of a robust material such as a metal or wood.
- the structure 3 can be made of a material inert with respect to the release of pollutants, for example stainless steel or anodized aluminum.
- the supporting structure 3 comprises two parts, respectively high 30H and low 30B, intended to act as air circulation valves.
- Each 30H valve portion (30B) constitutes a three-way valve, adapted to form air passageways between the internal vent 20H (20B), the external vent 10H (10B) and the housing 6.
- Each passageway is provided with a controllable shutter device.
- each 30H valve part (30B) is here in the form of a beam parallelepipedic having a first outer opening, a second inner opening and a third opening communicating with the housing 6.
- the three openings (first, second and third) high, respectively low, communicate with each other by forming an opening 34H, respectively 34B, having a T shape in cross section of the beam.
- Each of the three high openings (first, second and third), respectively low, is associated with a shutter device which comprises a shutter element, a motor and a communication module.
- the motor is intended to move the shutter element between an open position and a closed position.
- the communication module is intended to communicate, for example by radio, with the control device in order to receive commands for opening, closing and / or stopping the shutter element. Alternatively, the communication module could be connected to the control device by a wire link.
- the first and second openings are each equipped with a 35H (high grilles) and 35B (low grids) shutter grid with controllable blades movable between a closed position and an open position.
- These grids are here mounted on the vents 20H, 30H (20B, 30B) corresponding to the inner walls 2 and outer 1. Alternatively, they could be mounted on the support structure 3 itself.
- the third high opening (respectively low) is equipped with a 36H waterproof valve (respectively 36B) which is mounted on the support structure 3.
- the closure grids 35H, 35B may be coupled with particulate filters for filtering particles present in the air. These filters are arranged near the closing grids so as to be adjacent to the air inlets and outlets of the treatment system. They make it possible to limit the internal fouling of the system, in particular by the dust, which reduces the maintenance operations and preserves the performances of the system.
- the two valve parts 30H and 30B are connected by several vertical uprights, for example two lateral end posts 31 and two intermediate uprights 32.
- horizontal crosspieces of maintaining 33 here connect each intermediate amount 32 to the end amount 31 nearest.
- valve parts 30H and 30B have a width in the direction perpendicular to the planes of the walls 1 and 2 which is equal to the desired distance between the two walls 1, 2. This allows them to play their role of spacers. In order to lighten the structure and reduce manufacturing costs, the width of the uprights is advantageously less than that of the valve parts 30H and 30B.
- the photocatalytic substrate is a photocatalytic substrate
- the photocatalytic substrate is a semiconductor material capable of mineralizing pollutants present in the air by transforming them into carbon dioxide and water vapor, when subjected to illumination by radiations, here UV, which create electron-hole pairs on the surface of the semiconductor. Pollutants particularly targeted by photocatalysis are VOCs (Volatile Organic Compounds).
- the substrate used is, for example, TiO 2 titanium dioxide. It can be applied in the form of a film, made from a coating, on a support element.
- the substrate may for example be deposited on one or more of the following support elements: the inner face (that is to say the “inner” face of the housing 6) of the outer wall 1, the inner face of the wall 2, a particulate filter, one or more uprights and / or cross members of the structure, the floor of the housing 6, the ceiling of the housing 6, a specific support element (for example an expanded metal grid).
- a specific support element for example an expanded metal grid.
- the photocatalytic substrate may be a substrate that can be activated by light rays of the visible spectrum. This is particularly the case with a photocatalytic substrate such as titanium dioxide doped for example with carbon, the doping enabling the substrate to be activated by light rays of the visible spectrum.
- the lighting device :
- the lighting device 5 is intended to activate the photocatalytic substrate.
- the lighting device 5 comprises a plurality of UV lamps 50, each lamp comprising for example one or more neon tubes mounted on a support frame.
- Each lamp 50 is fixed to the uprights and / or to the crosspieces of the support structure 3 by means of a support frame 51.
- the system comprises six lamps each having two neon tubes.
- the lighting device could include other types of artificial light sources or optical fibers adapted to carry light from a remote light source into the housing 6, for example to carry natural sunlight from outside the building.
- Fans 7 may be installed to promote the flow of air along one or more desired circulation circuits, as will be explained in more detail in the description of the operation of the system.
- the flow of air flow that can be created or reinforced by the fans 7 may include in particular the suction of air from the room and / or from the outside, the scanning or licking of the photocatalytic substrate by the air to be treated, the blowing of treated air into the room and / or the direct ejection of outside air.
- the additional wall 2 can be pivotally mounted on the wall wall 1, by means of a hinge device. Thanks to this, the system can be opened, by pivoting the additional wall, which allows easy maintenance of the system.
- the support structure 3 is here fixed to the wall wall 1 at the level of the beams of the valve parts 30H and 30B.
- the system comprises at least one external sensor and an inner sensor (not shown), intended here to measure the pollutant concentrations, respectively external (that is to say outside the room and here of the building) and inside (ie in the room).
- the pollutants detected here include total volatile organic compounds (TVOCs).
- the sensors each comprise a communication module (for example radio) for transmitting measured data representative of the quality of the air, either upon receipt of a request from the control device, or automatically at regular time intervals.
- thermodynamic measurements T °, humidity, C0 2
- the lighting lamps, the motors of the shutter devices and the control device are connected to a supply device, for example connected to the mains.
- the pilot device (or module):
- the control device is intended to control the opening and closing of the air passageways based on measured data representative of the quality of the outside air and the quality of the indoor air. More specifically, it is intended to control the closing and opening of the closure devices apertures.
- the measured data representative of the quality of the air comprise measurements of concentration of pollutants in the air.
- the present invention is not limited to measurements of concentrations of pollutants in the air.
- the quality of the outside and / or inside air can be evaluated from other types of measured data such as temperature, hygrometry and / or content data. in CO2 in the air.
- the measured data representative of the air quality can therefore comprise, alternatively or complementary to the measurements of pollutant concentrations, other relevant measurements such as measurements of temperature, hygrometry and / or CO 2 content. air (outside and / or inside).
- the control device comprises a microprocessor, a communication module and a software module, or computer program, comprising software instructions for controlling the execution by the microprocessor of an algorithm for regulating the concentrations of pollutants in the air. inside and outside the room when the software module is running. It can be arranged for example in the room.
- the radio communication module is adapted to communicate in a conventional manner, for example by radio, with the pollutant sensors and with the motors of the shutter devices of the different openings, in order to transmit open / close / stop commands, data queries and receive measured data.
- the control algorithm implemented by the control device is illustrated by the logic diagram shown in FIG. 7. This ultimately corresponds to a flowchart of the steps of the operating method of the system.
- This algorithm comprises multiple comparison tests between the measured indoor pollutant concentration Cim, the measured external pollutant concentration C ext and / or an S concentration threshold. Depending on the result of these tests, the algorithm determines the pollution conditions. , or air quality, inside the room and outside, then, depending on these conditions, selects a configuration of the valve portions 30H, 30B of the system from a set of possible configurations of the system.
- a subset of possible configurations of the system can be pre-selected from all possible configurations.
- This subset here comprises the following six configurations (the "openings" referred to hereinafter being those of the support structure):
- a first configuration CONF1 defined by the closing of the three lower openings and the third upper opening and by the opening of the upper openings (outer and inner);
- a third configuration CONF3 defined by the opening of the upper inner opening, the lower outer opening and the third openings (high and low) and the closing of the upper outer opening and the lower inner opening;
- a fourth configuration CONF4 defined by the closing of the upper outer opening and the opening of the inner openings (high and low), the third openings (high and low) and the low outer opening;
- a fifth configuration CONF5 defined by the closing of the lower outer opening and the opening of the inner openings (high and low), the third openings (high and low) and the upper outer opening;
- a sixth configuration CONF6 defined by the closing of the outer and inner openings (high and low), the third openings (high and low) being open or closed (preferably closed to ensure sealing).
- the process is carried out during a cold season, for example between October and March in a region of the northern hemisphere, and the following conditions are met:
- the parameter Ta represents the temperature of the air
- the parameter HA represents the absolute humidity of the air
- the method comprises a first step E0 measuring data representative of the quality of the air inside the living room and outside thereof.
- the internal concentration Cint is measured as pollutants and the external concentration C ext as pollutants.
- other measures could be carried out, alternatively or in addition, in order to obtain measurement data representative of the quality of indoor air and outdoor air.
- This measurement step EO is followed by a plurality of comparison test steps between the data measured inside, the measured data outside and / or a predefined threshold.
- the test compares the measured internal concentration Cim, the measured outside concentration C ext and / or a concentration threshold S.
- These comparative tests make it possible to distinguish different situations, or situations. Each case is defined by the conditions here in the inner C concentrations and outdoor t C ext. In the embodiment described here, the tests make it possible to identify six possible scenarios (or situations), denoted C1 to C6, which will be explained in the description that follows.
- the threshold S used here may be an indoor air guide value (VGAI) in TVOC, a regulatory value, a normative value or a value chosen by an operator.
- VGAI indoor air guide value
- the measurement step EO is followed by a first comparison test step E1 of the measured indoor pollutant concentration C in t and the measured external pollutant concentration C ext . If the internal concentration Cint is strictly greater than the external concentration C ext (positive test E1), the method goes to the test step E2 for comparing the internal concentration and the threshold S.
- the internal concentration C im is less than or equal to the threshold S and strictly greater than the external concentration C ext .
- control module selects a configuration of the system allowing an outside air supply, for example the configuration CONF1, during a step E3.
- control module controls the closing of the three low openings and the third high opening and the opening of the two upper outer and inner openings and the starting of the fans, so that The outside air is taken from the system through the top outer openings and then directly blown into the living room through the high interior openings without treatment.
- the internal concentration C im is strictly greater than the external concentration C ex t which is itself greater than or equal to the threshold S.
- the control module selects a configuration of the system allowing a supply of outside air treated with indoor air recycling, here CONF4 configuration, during a step E6.
- the control module controls the closing of the upper outer opening and the opening interior openings (high and low), third openings (high and low) and low outside opening and fan start-up.
- This configuration makes it possible to take the outside air through the low outside opening and the inside air through the lower inside opening.
- the outside air taken and the interior air removed are circulated inside the system so as to scan, that is to say to come lick, the photocatalytic substrate.
- it is activated by illumination using UV lamps, which purifies the air taken by photocatalysis.
- the purified air, coming from outside and inside, is then ejected, or blown, into the living room, through the inner high opening.
- the internal concentration C in t is strictly greater than the external concentration C ext which is itself strictly greater than the threshold S.
- the control module selects a configuration of the system allowing an intake of outside air with indoor air recycling here, in this case CONF5 configuration, during a step E8.
- the control module controls the closing of the low outer opening and the opening of the inner openings (high and low), the upper outer opening and the third openings (high and low) and the switching on the fans.
- indoor air is drawn through the system through the lower interior openings.
- This collected interior air is circulated in the system so as to lick the photocatalytic substrate, activated by UV illumination, before being ejected into the room through the high interior openings.
- outside air is drawn from the upper outside openings and blown into the living room through the high interior openings.
- the method goes to the comparison test step E10 of the external concentration with the threshold S. If the external concentration is greater than or equal to the threshold S (positive test E10), the process proceeds to a test step E1 1 for comparing the internal concentration C in t with the threshold S.
- the external concentration C ex t is strictly greater than the internal concentration C in t which itself is greater than or equal to the threshold S.
- the control module selects a configuration of the system for recycling indoor air, in this case CONF2 configuration, during a step E12.
- the control module controls the closing of the external openings (high and low) and the opening of the inner openings (high and low) and the third openings (high and low), and the starting of the fans.
- indoor air is drawn through the system through the lower interior openings.
- This air is circulated inside the system so as to lick the photocatalytic substrate, activated by UV illumination, before being ejected into the room through the upper interior openings.
- the internal concentration Cint is strictly below the threshold S and the external concentration C ex t is greater than or equal to the threshold S.
- the control module here selects a configuration of the system allowing a supply of outside air treated, in this case the configuration CONF3, during a step E14.
- the control module controls the opening of the upper inner opening, the lower outer opening and the third openings (high and low) and the closing of the upper outer opening and the second one. low interior opening, as well as turning on the fans. Thanks to this CONF3 configuration, outside air is picked up by the system through the lower outside openings. This air is circulated inside the system so as to lick the photocatalytic substrate, activated by UV illumination, before being ejected, or blown into the room, after purification, by the upper inner openings.
- the internal concentration Cint is strictly less than the external concentration C ext which is itself strictly less than the threshold S.
- control module here selects a configuration of the system without outside air supply and without recirculation of indoor air, in this case CONF6 configuration, during a step E1 6.
- control module controls the closing of the outer and inner openings (high and low) and possibly the third openings (high and low).
- This configuration can be used temporarily.
- This configuration CONF7 is defined by the opening of the upper openings (outer and inner), the lower outer opening and the third openings (high and low).
- the action of the fans is adapted so that outside air is collected by all the external openings (high and low) and then circulated in the system so as to scan the photocatalytic substrate under UV illumination and, after purification, ejected in the living room through the high interior openings.
- This configuration is defined by the opening of all the openings, that is to say the high openings, inner and outer, the lower openings, inner and outer, and third openings (high and low).
- the action of the fans is further adapted to collect outside air, through the upper and lower outer openings, and the inner air through the lower inner openings, to circulate the air taken from the system by licking the photocatalytic substrate and eject the purified air into the room through the high interior openings.
- the table below illustrates, in a nonlimiting manner, different configurations that can be chosen according to the different cases, or situations, possible.
- each wall 1, 2 comprises two openings, respectively high and low. More generally, each wall may comprise one or more air passage openings, the different configurations of the system being adapted to the number and positions of the openings to ensure the various functions described: indoor air recycling (that is to say, intake of internal air, purification and reinjection inwards) and / or supply of purified outside air and / or direct supply of outside air without purification and / or no contribution and no recycling. 'air.
- FIG 6 there is shown another embodiment of the system.
- the system has a sheet structure to optimize the contact between the polluted air and the photocatalytic substrate.
- the housing 6 contains here between the inner faces of the walls 1 and 2, two structures carrying lighting devices between which a plate coated on both sides of photocatalytic substrate is interposed. It would of course be possible to multiply the number of plates coated with photocatalytic substrate and light-carrying structures that are alternately arranged inside the housing 6, depending on the purification requirements, the desired insulation and the level required. desired power consumption.
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- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Environmental & Geological Engineering (AREA)
- Health & Medical Sciences (AREA)
- Biomedical Technology (AREA)
- Analytical Chemistry (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Disinfection, Sterilisation Or Deodorisation Of Air (AREA)
- Catalysts (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR1456123A FR3022786B1 (fr) | 2014-06-30 | 2014-06-30 | Systeme de traitement photocatalytique de l'air d'une piece d'un batiment |
PCT/EP2015/062165 WO2016000889A1 (fr) | 2014-06-30 | 2015-06-01 | Systeme de traitement photocatalytique de l'air d'une piece d'un batiment |
Publications (1)
Publication Number | Publication Date |
---|---|
EP3160621A1 true EP3160621A1 (fr) | 2017-05-03 |
Family
ID=51298891
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP15725638.9A Withdrawn EP3160621A1 (fr) | 2014-06-30 | 2015-06-01 | Systeme de traitement photocatalytique de l'air d'une piece d'un batiment |
Country Status (3)
Country | Link |
---|---|
EP (1) | EP3160621A1 (fr) |
FR (1) | FR3022786B1 (fr) |
WO (1) | WO2016000889A1 (fr) |
Family Cites Families (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5595813A (en) * | 1992-09-22 | 1997-01-21 | Takenaka Corporation | Architectural material using metal oxide exhibiting photocatalytic activity |
US6884399B2 (en) * | 2001-07-30 | 2005-04-26 | Carrier Corporation | Modular photocatalytic air purifier |
FR2852256B1 (fr) * | 2003-03-10 | 2007-01-26 | Cie Ind D Applic Thermiques Ci | Ensemble de filtration et de traitement de composes organiques, son procede de fabrication et appareil de conditionnement d'air equipe d'un tel ensemble |
EP1520615A1 (fr) * | 2003-10-01 | 2005-04-06 | R & D du groupe Cockerill-Sambre | Paroi de purification d'air |
WO2008014540A1 (fr) * | 2006-07-31 | 2008-02-07 | Microgenix Australasia Pty Limited | Systèmes et procédés de gestion de la qualité d'air |
-
2014
- 2014-06-30 FR FR1456123A patent/FR3022786B1/fr active Active
-
2015
- 2015-06-01 WO PCT/EP2015/062165 patent/WO2016000889A1/fr active Application Filing
- 2015-06-01 EP EP15725638.9A patent/EP3160621A1/fr not_active Withdrawn
Also Published As
Publication number | Publication date |
---|---|
FR3022786B1 (fr) | 2016-07-15 |
FR3022786A1 (fr) | 2016-01-01 |
WO2016000889A1 (fr) | 2016-01-07 |
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