EP2947396B1 - Procédé d'aération d'une pièce et installation d'aération associée - Google Patents

Procédé d'aération d'une pièce et installation d'aération associée Download PDF

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Publication number
EP2947396B1
EP2947396B1 EP15168390.1A EP15168390A EP2947396B1 EP 2947396 B1 EP2947396 B1 EP 2947396B1 EP 15168390 A EP15168390 A EP 15168390A EP 2947396 B1 EP2947396 B1 EP 2947396B1
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Prior art keywords
air
temperature
humidity
sensor
absolute
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EP15168390.1A
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German (de)
English (en)
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EP2947396A1 (fr
Inventor
Werner Schwille
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SCHWILLE ELEKTRONIK PRODUKTIONS und VERTRIEBS GmbH
Schwille-Elektronik Produktions- und Vertriebs GmbH
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SCHWILLE ELEKTRONIK PRODUKTIONS und VERTRIEBS GmbH
Schwille-Elektronik Produktions- und Vertriebs GmbH
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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
    • F24F11/00—Control or safety arrangements
    • F24F11/0001—Control or safety arrangements for ventilation
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F11/00—Control or safety arrangements
    • F24F11/30—Control or safety arrangements for purposes related to the operation of the system, e.g. for safety or monitoring
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F11/00—Control or safety arrangements
    • F24F11/0008—Control or safety arrangements for air-humidification
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F11/00—Control or safety arrangements
    • F24F11/50—Control or safety arrangements characterised by user interfaces or communication
    • F24F11/52—Indication arrangements, e.g. displays
    • F24F11/523—Indication arrangements, e.g. displays for displaying temperature data
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F11/00—Control or safety arrangements
    • F24F11/50—Control or safety arrangements characterised by user interfaces or communication
    • F24F11/56—Remote control
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F11/00—Control or safety arrangements
    • F24F11/70—Control systems characterised by their outputs; Constructional details thereof
    • F24F11/72—Control systems characterised by their outputs; Constructional details thereof for controlling the supply of treated air, e.g. its pressure
    • F24F11/74—Control systems characterised by their outputs; Constructional details thereof for controlling the supply of treated air, e.g. its pressure for controlling air flow rate or air velocity
    • F24F11/76—Control systems characterised by their outputs; Constructional details thereof for controlling the supply of treated air, e.g. its pressure for controlling air flow rate or air velocity by means responsive to temperature, e.g. bimetal springs
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F11/00—Control or safety arrangements
    • F24F11/0001—Control or safety arrangements for ventilation
    • F24F2011/0002—Control or safety arrangements for ventilation for admittance of outside air
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F11/00—Control or safety arrangements
    • F24F11/0001—Control or safety arrangements for ventilation
    • F24F2011/0006—Control or safety arrangements for ventilation using low temperature external supply air to assist cooling
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F2110/00—Control inputs relating to air properties
    • F24F2110/10—Temperature
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F2110/00—Control inputs relating to air properties
    • F24F2110/10—Temperature
    • F24F2110/12—Temperature of the outside air
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F2110/00—Control inputs relating to air properties
    • F24F2110/20—Humidity
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F2110/00—Control inputs relating to air properties
    • F24F2110/20—Humidity
    • F24F2110/22—Humidity of the outside air

Definitions

  • the invention relates to the ventilation of particular cool rooms such as cellars or garages in which precipitates due to excessive humidity condensation on the walls.
  • the masonry will absorb this moisture, but from a certain saturation of the masonry with absorbed moisture, this will lead to mold on the insides of the walls of the room.
  • a higher outdoor temperature than the indoor temperature does not always mean that the air outside is drier than inside the room to be ventilated.
  • the respective temperatures and relative humidity are determined by means of an outdoor temperature sensor and an indoor temperature sensor and the measured values to a control device via USB, RJ45, Ethernet, Bluetooth, NFC, WLAN and / or GPRS / UMTS so that it can calculate the dew point and, based on the comparison of the calculated outside dew point with the measured internal temperature or a change in the relative indoor humidity, initiates or terminates ventilation.
  • the DE 10 2008 044 439 A1 discloses a method according to the preamble of claims 1 and 2 and a ventilation system according to the preamble of claim 8.
  • a mainly intended for use in a roof truss ventilation is from the WO 2007/139507 A1 known.
  • the ventilation takes place by means of an outside air in the interior of the advancing blower and a flap through which the internal air can escape.
  • the relative humidity, the temperature and possibly the (partial) water vapor pressure passed to a computing unit and processed by this effect that either i) the ventilation is started when within the room to be ventilated, the water vapor pressure higher is turned off or the ventilation is switched off if, within the room to be ventilated, the water vapor pressure is lower than outside or ii) the operating condition results from a value X calculated by means of an algorithm dependent on the relative humidity and the temperature.
  • a temperature and humidity dependent ventilation method is in the DE 199 52 519 A1 shown. If the relative humidity inside the room to be ventilated exceeds a predefined value, it is decided on the basis of the partial pressure difference inside and outside the room to be ventilated whether the fan is switched on or off. In the opposite case, ie if the predefined value is not exceeded, the fan is switched on when the dew point temperature of the air inside the room to be ventilated is greater than the surface temperature at the outer wall edge, measured inside the room, or switched off, if this is not the case Case is.
  • the measurement data required for this purpose are determined by temperature and humidity sensors and fed to a controller so that the partial vapor and saturation pressures as well as the dew point temperature can be calculated therefrom.
  • a control of a dry room ventilator which monitors that there can be no dew point undershot within the drying room at any time.
  • the fan is switched off when a corresponding parameter, selected from the outside and inside temperature, humidity inside and outside and the internal wall temperature, the dew point below the basement wall approaches.
  • the absolute humidity which expresses the amount of water dissolved in grams in a volume fraction of air, can not be measured directly, or measured only with great effort.
  • the humid air perceived by humans is the relative humidity, which can amount to a maximum of 100 %, which corresponds to a saturation of the air with steam.
  • a maximum saturation of the air with moisture, ie water vapor, thus a relative humidity of 100 %, is at any temperature and at an associated air pressure - more precisely: associated partial pressure of the water - or vice versa for a given air pressure - associated partial pressure of the water - at a certain temperature.
  • this can be done as a so-called dew point curve according to FIG. 2 a represent.
  • the air temperature T Li inside and outside T La are known from the current state .
  • the dew point which is at the same pressure level, can be read on the dew point curve, as well as the dew point temperature T T.
  • the method can be used to permanently or at short intervals by means of appropriate sensors to determine the absolute humidity in the room and outside the room, so the outside air, and automatically by activating the at least one fan outside air in the To transport space only when the absolute humidity of the outside air is lower than that of the indoor air, preferably by a predetermined absolute humidity difference. Because if this difference is too small, the effect of reducing the absolute humidity in the room is so low that the energy required for the fan is not worthwhile.
  • the determination of the absolute humidity from the data usually available namely air temperature and relative humidity of the air
  • the dew point temperature inside and outside the room used The supply and discharge of outside air, so the ventilation, takes place only when the dew point temperature of the outside air is lower than the dew point temperature of the indoor air.
  • the effect would be to reduce the moisture the indoor air is so low that this does not pay for the energy required for the fan.
  • the determination of the dew point temperature inside and outside the room is technically much easier than the determination of the respective absolute humidities, and in most cases, when the absolute humidity outside is lower than inside the room, the corresponding dew point -Temperature outside lower than inside.
  • the actual air pressure on the result of the absolute humidity plays only a minor role, the actual air pressure replaced by the present at the respective sea level of the site average air pressure and given the control, preferably even independent of the respective sea level for this purpose, the standard air pressure stored in the controller.
  • the dew point temperature difference and / or the absolute humidity difference can be selected and set.
  • ventilation can only be provided if the air temperature in the room is above this minimum set temperature, and the ventilation stops when the temperature in the room has dropped to this predetermined minimum temperature.
  • a maximum temperature can be selected as the air temperature inside the room.
  • the vent may preferably be performed at intervals, preferably wherein the ventilation intervals are not longer than the pause intervals, preferably only one fifth as long, more preferably only 1 / 10th as long, more preferably only 1 / 20th as long as the pause intervals.
  • the temperature sensor and / or the moisture sensor both on the outside and / or on the inside is activated for the measurement at most every 1000 milliseconds.
  • the distance between the activated phases that is to say the measurements, and thus also the ratio of durations of deactivity to activity of these sensors, is increased the lower the measured temperature is.
  • a corresponding ventilation system for ventilating a room according to the invention comprises the features of claim 8.
  • the two sensors can either measure the relative humidity and the temperature or directly measure the absolute humidity, from which the controller, or a processor eg in the respective sensor, the absolute humidity is calculated.
  • the air pressure is then a predetermined, for this height, on which the ventilation system operates, mean air pressure, or independently of the sea level known standard air pressure entered into the controller, except indoor sensor and outdoor sensor are also able to measure the current air pressure , Then the latter is used.
  • the absolute humidity is determined from temperature and relative humidity according to the known contexts, see in particular FIG. 3 ,
  • Calculated by the controller determines the absolute humidity from the relative humidity and temperature, in particular on the basis of a fixed predetermined, in particular average, air pressure according to the formulas given above.
  • the respective dew point temperature is also determined according to the formula explained in the procedure.
  • the controller preferably has a display which separately displays the dew point temperatures and / or the absolute humidity for the inner sensor and the outer sensor.
  • the dew point temperature difference and / or the absolute humidity difference between inside and outside can be displayed.
  • the display can in particular also display the current temperature in the room and outside the room, as measured at the respective sensors.
  • the two sensors and / or the at least one fan are signal-technically connected by cable or wirelessly, in particular by radio.
  • the ventilation system comprises a second fan, so that one fan transports outside air into the room and the other fan discharges inside air to the outside, the two fans are preferably located opposite each other in the room, with a maximum possible distance to each other to flow through its entirety as well as possible.
  • the system comprises only one fan, in addition - preferably again at a point as far as possible from the one fan of the room - another air opening is necessary, which is only open when it is ventilated. It thus has a closure element, which is only when activating the fan, preferably active, opened, for example in the form of a flap.
  • the one or the existing two fans also have flaps that close the air passage opening as tight as possible with the fan off, and are open only when the fan is running.
  • the controller usually contains a relay.
  • the controller also includes a test function for this relay to always be able to determine whether the relay is working properly, which is crucial for the overall function of the controller.
  • the controller may preferably include a program for continuous ventilation in which ventilation is continuous, provided that the prerequisite is met, ie dew point temperature outside ⁇ as dew point temperature in the room to be ventilated or / and absolute humidity outside ⁇ as absolute humidity in the ventilated Room.
  • the controller may also preferably include a refrigeration program in which the temperature in the room may be lowered by supplying colder outside air.
  • the supply of outside air can be continued as long as either the relative humidity in the room and / or the absolute humidity in the room does not exceed a corresponding predetermined maximum limit, ie maximum predetermined relative humidity or maximum predetermined absolute humidity, if not previously the desired target temperature is reached.
  • the controller may also include a heating program in which the temperature in the room can be increased by supplying warmer outside air.
  • the supply of outside air can be continued until the relative humidity in the room does not rise above a predetermined maximum relative humidity in the room and / or the absolute humidity in the room Room does not rise above a predetermined maximum absolute humidity in the room and / or the dew point temperature in the room does not fall below the dew point temperature outside the room, unless the desired target temperature has already been reached.
  • the moisture sensor is a capacitive sensor, as they measure very accurately and are durable.
  • the temperature sensor is preferably a bend-gap sensor.
  • the ventilation system is preferably constructed so that no significant temperature line from the controller, in particular from its processor, to the sensor, in particular the humidity sensor takes place.
  • FIG. 1 shows the typical application in which the ventilation system is installed in a room 50 whose internal air 52 is too humid, for example in a garage or a basement room:
  • the air inlet point - in this case, the left air inlet opening 9 - and the air outlet point - in this case the right air outlet opening 11 - is each a motor-driven Fan 1 mounted.
  • the fan 1 on the left side in the air inlet opening 9 has such a direction of rotation that it transports outside air 51 into the space 50 .
  • the fan 1 shown in the right-hand edge of the image in the air outlet opening 11 in the activated state has such a direction of rotation that it carries away interior air 52 outside the space 50 .
  • the fans 1 or in particular closure flaps 12 fastened to them close the respective openings 9 , 11 as tightly as possible. If only one of the openings 9 , 11 has a fan 1 , then the other opening must have at least such closing flaps 12 which, when the fan 1 is inactive, close the corresponding opening as tightly as possible.
  • an outdoor sensor 4 is arranged, and within the space 50, an indoor sensor 3, both of which respectively measure in position the prevailing temperature of the air and the relative humidity.
  • controller 2 which is preferably weather-protected, for example, in the interior of the room 50 , and the signal also with the two fans 1 and / or the shutter 12 of the openings 9 , 11 is in communication and these controls , So the fan 1 on or off and possibly regulated in its speed and the shutter 12 opens or closes.
  • Aeration is only carried out and the at least one corresponding fan 1 is rotated, if the conditions described above are present.
  • FIG. 2a shows the relationship between the air temperature, the water vapor partial pressure, the relative humidity LF rel. and the dew point temperature T T in the form of the so-called dew point curve.
  • the dew point ie 100 % relative humidity, plotted against the air temperature, forms an exponentially rising curve and the dew point is present at a different water vapor partial pressure at each temperature.
  • the air pressure is composed of the partial pressures of the constituents contained in the air, in the case of air laden with water vapor thus the partial pressure of the water vapor, the partial pressure of the oxygen, the partial pressure of the nitrogen and the partial pressure of the other components contained in the air.
  • This graph also shows that when the temperature changes, but the amount of dissolved water per unit volume of air remains constant, the relative humidity LF rel. changes, and thus from this graph, the relationship between absolute and relative humidity can not be determined.
  • the dew point temperature T T is plotted and read in a simple form above the air temperature T L , specifically for different relative air humidities LF rel .
  • the situation A 1.1 is recorded as a typical outdoor summer situation, with a temperature significantly higher than that of the interior and a lower relative humidity.
  • the dew-point temperature outside T TA is lower than the dew-point temperature inside T TI , and can be ventilated.
  • an exceptional situation in the form of the summer situation is represented as A 1.2 , namely humid, damp summer air, ie at the same high temperature as in A 1.1 , but with significantly higher relative humidity. It is immediately apparent that then the dew-point temperature T TA outside is higher than the dew-point temperature T TI inside and should not be aired.
  • FIG. 2b now shows in a detail situation FIG. 2 a for the relevant temperature range also the situation in the interior (I) as well as the external situation in two typical summer situations A 1.1 and A 1.2 and a typical winter situation A 1.3 .

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Human Computer Interaction (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Ventilation (AREA)
  • Air Conditioning Control Device (AREA)

Claims (17)

  1. Procédé pour ventiler un espace (50) par un apport contrôlé d'air extérieur (51) à un endroit d'apport de l'espace (50) et par l'évacuation contrôlée d'air intérieur (52) à un endroit d'évacuation éloigné de l'endroit d'apport,
    où la température de point de rosée (TTa) de l'air extérieur (51) et la température de point de rosée (TTi) de l'air intérieur (52) sont déterminées par les capteurs ou par une commande sur la base d'une température d'air intérieur et d'une humidité relative intérieure mesurées par un capteur intérieur (3) et d'une température d'air extérieur et d'une humidité relative extérieure mesurées par un capteur extérieur (4),
    caractérisé en ce que
    l'apport et l'évacuation ne sont réalisés que quand la température de point de rosée (TTa) de l'air extérieur (51) est plus basse que la température de point de rosée (TTi) de l'air intérieur (52) d'une différence de température minimale (5) librement choisissable et réglable.
  2. Procédé de ventilation d'un espace par courants d'air (50) par un apport contrôlé d'air extérieur (51) à un endroit d'apport de l'espace (50) et par l'évacuation d'air intérieur à un endroit d'évacuation éloigné de l'endroit d'apport, en particulier selon la revendication 1,
    caractérisé en ce que
    l'humidité absolue (LFabs) de l'air extérieur (51) et l'humidité absolue (LFabs) de l'air intérieur (52) sont déterminées par les capteurs ou par une commande sur la base d'une température d'air intérieur et d'une humidité relative intérieure mesurées par un capteur intérieur (3) et d'une température d'air extérieur et d'une humidité relative extérieure mesurées par un capteur extérieur (4),
    et
    l'apport et l'évacuation ne sont réalisés que quand l'humidité absolue (LFabs) de l'air extérieur (51) est plus basse que l'humidité absolue (LFabs) de l'air intérieur (52) d'une différence d'humidité absolue librement choisissable et réglable.
  3. Procédé selon une des revendications précédentes,
    caractérisé en ce que
    l'apport et l'évacuation ne sont réalisés que quand la température d'air TLi à l'intérieur d'un espace (50) excède une température minimale définie (7) et/ou quand il est terminé au cours de l'apport et de l'évacuation lorsque la différence de température (5) et/ou la différence d'humidité absolue sont inférieures á une différence minimale respective définie.
  4. Procédé selon la revendication 3,
    caractérisé en ce que
    à la température minimale (7) l'apport et l'évacuation sont réalisés à intervalles, les intervalles de ventilation n'étant en particulier pas plus longs que les intervalles de pause, ayant de préférence 1/5, mieux 1/10, mieux 1/20 de la longueur des intervalles de pause,
    et/ou en ce que les pressions d'air pour déterminer les humidités absolues sont mesurées par le capteur intérieur (3) et le capteur extérieur (4).
  5. Procédé selon une des revendications 2 à 4,
    caractérisé en ce que
    une pression d'air moyenne est supposée pour l'humidité absolue (LFabs) de l'air intérieur (52), ou en ce que dans le cas de la présence d'une mesure de la pression d'air la pression d'air effectivement mesurée est utilisée.
  6. Procédé selon une des revendications précédentes,
    caractérisé en ce que
    un capteur de température et un capteur d'humidité du capteur extérieur (4) et/ou du capteur intérieur (3) sont activés au maximum tous les 1000 ms, le rapport entre les durées de I non-activité à l'activité de ces capteurs (3, 4) étant augmenté sur la base de la dernière température mesurée lorsque la température a baissée.
  7. Procédé selon une des revendications précédentes,
    caractérisé en ce que
    l'humidité absolue (LFabs.) est déterminée sur la base de l'humidité relative (LFrel.) et la température (TL) de l'air mesurée par un capteur (3, 4), en particulier compte tenu d'une pression d'air moyenne (p) selon la formule L F abs . = 216 . 7 × L F rel 100 % × α × exp β × t ° C λ + t ° C 273 . 15 ° C + t ° C ,
    Figure imgb0013
     avec Etat tgamme (°C) α (hPa) β λ (°C) sur l'eau -45-60 6.112 17.62 243.12 sur la glace -80 - 0.01 6.112 22.46 272.62
    et/ou la température de point de rosées est déterminée comme suit T T L F rel . , T ° K = T n × In L F rel . 100 % + m × T ° K T n + T ° K m − In L F rel . 100 % − m × T ° K T n + T ° K
    Figure imgb0014
     avec T gamme Tn (°C) m sur l'eau 0-50 °C 243,12 17,62 sur la glace -40 - 0 °C 274,62 22,46
  8. Système de ventilation pour ventiler un espace (50) par un apport contrôlé d'air extérieur (51) et une évacuation contrôlée d'air intérieur (52) comprenant
    - au moins un ventilateur (1),
    - un capteur intérieur (3),
    - un capteur extérieur (4),
    - une commande (2) commandant ledit au moins un ventilateur (1) et recevant les valeurs mesurées des capteurs (3, 4),
    caractérisé en ce que
    - le capteur intérieur (3) et le capteur extérieur (4) sont capables, ou
    -- de mesurer l'humidité relative ou
    -- de mesurer l'humidité relative (LFrel.) et la température (TL) de l'air,
    - la commande (2) est capable, dans le cas d'une mesure de l'humidité relative (LFrel.) et de la température (TL) de l'air mesurée par les capteurs (3, 4), de déterminer l'humidité absolue (LFabs) au capteur intérieur (3) et au capteur extérieur (4), et
    - la commande (2) reçoit les valeurs des capteurs (3, 4) et commande ledit au moins un ventilateur pour l'apport et l'évacuation d'air quand l'humidité absolue (LFabs) de l'air extérieur (51) est plus basse que l'humidité absolue (LFabs) de l'air intérieur (52) d'une différence d'humidité absolue librement choisissable et réglable.
  9. Système de ventilation selon la revendication 8,
    caractérisé en ce que le capteur intérieur (3) et le capteur extérieur (4) sont capables de mesurer la pression d'air (p),
    et/ou la pression d'air (p), dans le cas où l'apport et l'évacuation ne sont réalisés que quand l'humidité absolue (LFabs) de l'air extérieur (51) est plus basse que l'humidité absolue (LFabs) de l'air intérieur (52) ou l'humidité absolue (LFabs) de l'air extérieur (51) est plus basse que l'humidité absolue (LFabs) de l'air intérieur (52) d'une différence d'humidité absolue, une pression d'air moyenne est supposée ou que dans le cas d'une mesure de pression effectuée la pression d'air mesurée est utilisée.
  10. Système de ventilation selon une des revendications de dispositif précédentes,
    caractérisé en ce que
    la commande (2) est capable de déterminer l'humidité absolue sur la base de l'humidité relative (LFrel.) et de la température (TL) de l'air mesurée par un capteur (3, 4), en particulier compte tenu d'une pression d'air moyenne (p) selon la formule L F abs . = 216 . 7 × L F rel 100 % × α × exp β × t ° C λ + t ° C 273 . 15 ° C + t ° C ,
    Figure imgb0015
     avec Etat tgamme (°C) α (hPa) β λ (°C) sur l'eau -45-60 6.112 17.62 243.12 sur la glace -80-0.01 6.112 22.46 272.62
  11. Système de ventilation selon une des revendications de dispositif précédentes,
    caractérisé en ce que
    la commande (2) est capable de déterminer la température de point de rosées comme suit T T L F rel . , T ° K = T n × In L F rel . 100 % + m × T ° K T n + T ° K m − In L F rel . 100 % − m × T ° K T n + T ° K
    Figure imgb0016
     avec T gamme Tn (°C) m sur l'eau 0-50 °C 243,12 17,62 sur la glace -40 - 0 °C 274,62 22,46
  12. Système de ventilation selon une des revendications de dispositif précédentes,
    caractérisé en ce que
    la commande (2) comprend un affichage (8) indiquant la température de point de rosées (TT) et/ou l'humidité absolue (LFabs) séparément pour le capteur extérieur et le capteur intérieur (4, 3),
    et/ou la commande (2) comprend un affichage (8) indiquant la température de l'air (TL) actuelle séparément pour le capteur extérieur et le capteur intérieur (4, 3).
  13. Système de ventilation selon une des revendications de dispositif précédentes,
    caractérisé en ce que
    les deux capteurs (3, 4) et ledit au moins un ventilateur (1) sont, pour les signaux,
    connectés sans fil avec la commande (2), en particulier par radio,
    et/ou en ce que le système de ventilation comprend deux ventilateurs (1) à des points éloignés de l'espace (50), en particulier à des points opposés d'une distance maximale dans l'espace (50).
  14. Système de ventilation selon une des revendications de dispositif précédentes,
    caractérisé en ce que
    le capteur extérieur ou le capteur intérieur (4, 3) comprennent un processeur pour déterminer la température de point de rosées et/ou de l'humidité absolue, en particulier une puce, en particulier une puce CMOS,
    et/ou la commande (2) comprend une fonction de test pour le relais inclus.
  15. Système de ventilation selon une des revendications de dispositif précédentes,
    caractérisé en ce que
    la commande (2) comprend un programme pour une ventilation permanente, où la ventilation est permanente, pourvu que la condition (température de point de rosées extérieure (TTa) < température de point de rosées intérieure (TTi) et le cas échéant en outre l'humidité absolue extérieure < l'humidité absolue intérieure) soit remplie,
    et/ou la commande (2) comprend un programme de réfrigération où la température dans l'espace (50) peut être baissée par l'apport d'air extérieure plus froide, pourvu qu'une humidité relative et/ou absolue dans l'espace n'excède pas une humidité relative et/ou absolue maximale prédéterminée dans l'espace.
  16. Système de ventilation selon une des revendications de dispositif précédentes,
    caractérisé en ce que
    la commande (2) comprend un programme de chauffage, où la température dans l'espace (50) peut être augmentée par l'apport d'air extérieure plus chaude, pourvu qu'une humidité relative et/ou absolue dans l'espace n'excède pas une humidité relative et/ou absolue maximale prédéterminée dans l'espace (50),
    et/ou le capteur d'humidité est un capteur capacitif.
  17. Système de ventilation selon une des revendications de dispositif précédentes,
    caractérisé en ce que
    le capteur de température est un capteur Bend-Gap,
    et/ou le système de ventilation est construit de telle maniéré qu'il n'y ait pas de transmission signifiante de température de la commande (2), en particulier de son processeur, au capteur d'humidité.
EP15168390.1A 2014-05-20 2015-05-20 Procédé d'aération d'une pièce et installation d'aération associée Revoked EP2947396B1 (fr)

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EP3978815A1 (fr) * 2020-10-01 2022-04-06 Humian Technologies Oy Procédé de surveillance et de ventilation de zones sensibles

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FR3053769B1 (fr) * 2016-07-06 2018-08-10 Somfy Sas Procede de determination d'un etat d'ouverture d'un ouvrant d'un local d'un batiment et dispositif de determination associe
CN109869870A (zh) * 2019-01-24 2019-06-11 杭州美时美刻物联网科技有限公司 一种基于区块链技术的室内空气循环系统
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EP3978815A1 (fr) * 2020-10-01 2022-04-06 Humian Technologies Oy Procédé de surveillance et de ventilation de zones sensibles

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