Classifications

• • 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
  • F24F11/0001—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
  • F24F2120/00—Control inputs relating to users or occupants
  • F24F2120/10—Occupancy
• • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
  • F24—HEATING; RANGES; VENTILATING
  • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
  • F24F2221/00—Details or features not otherwise provided for
  • F24F2221/38—Personalised air distribution

Definitions

• the invention relates to a method for ventilating a room, wherein in the room at least temporarily at least one person can stay.
• An air-conditioning of the rooms of a building is determined in the planning phase when building the building.
• the supply air volume for the individual rooms and in the sum for the whole building is determined.
• the performance characteristics of an air-conditioning building equipment are determined.
• a central air conditioning system a central fan and air ducts with volumetric flow regulators and outlets as well as a humidification system and a heating / cooling system are designed for the calculated demand.
• the design is based on the calculated demand by determining the features of decentralized devices.
• VAV systems variable volume flow systems
• the volume flow for ventilating a room is determined by the room temperature.
• a temperature sensor in the room or in the exhaust air shifts setpoints of volume flow controllers in a supply and exhaust air line between fixed maximum and minimum values in order to reach the specified room temperature.
• KVS systems constant volume flow systems
• air-water systems are available in which room ventilation is separated from room temperature control, thereby reducing the energy required for air transport and air conditioning.
• the supply and exhaust air flow for a room can be reduced to the hygienically required outside air volume flow. Often work these systems with a constant air exchange.
• air quality-dependent volume flow control is available.
• the quality of the air can be determined by means of air quality sensors. The determination of carbon dioxide in the air has proved to be a leading value in densely packed meeting rooms.
• VOCs oxidizable, non-airborne substances
• mixed gas sensors have not proven to be effective in office ventilation as they are selective in their response to odors and can not mimic the sensation of the human nose.
• VOC-CO 2 sensors are offered. Basically, however, the determination of air quality by means of appropriate air quality sensor is an expensive solution.
• manual VAV systems are known in which the room user switches a volume flow control system on or off. The supply air flow can be switched by the room user via programmed setpoint flow rates (for example three-level: min-mid-max).
• the invention is therefore based on the object of specifying a method for ventilating a room of a building, which provides a very good air quality in the room at low cost.
• the influencing variable which takes into account the basic ventilation proportion depends on building-related and / or room-related parameters. These include, for example, room size, room volume, building emissions, room emissions, etc. Under building or room emissions are vapors of buildings, floor coverings, furnishings, etc. to subsume.
• the other influencing variable takes into account the number of people staying in the room, that is, it takes into account the number of people actually staying in the room, who is staying in the room at the same time. This can not be a person, a person or it can be several people. Due to the procedure according to the invention, a very good indoor air quality is guaranteed and too frequent, increased costs associated with air change per unit time prevented. An inadequate amount of supply air related to the building or the room and the number of people staying in the room is also prevented.
• variable ventilation proportion provision is made for the variable ventilation proportion to be dependent on the number of persons currently staying in the room at the time in question.
• the ventilation is therefore in "real time”.
• variable ventilation proportion is linearly dependent on the number of people in the room. As a result, the variable ventilation proportion per person is increased in the same way.
• the incoming air quantity flowing into the room is controlled and / or regulated by means of the volume flow control and / or regulation.
• the minimum supply air flow V min2 is determined at least taking into account a building emission, room emission, the size and / or the volume of the room.
• the building emission or room emission is to be understood to mean evaporations of building elements or room elements, such as wall coatings, ceiling coatings, floor coverings, furniture, etc.
• Air quality takes into account the quality of the supply air and / or the quality of the room air.
• quality classes can be determined. Other factors to consider include the size or volume of the associated room of the building.
• the size of the passenger influx p q is preferably determined taking into account the desired indoor air quality.
• the total person-dependent supply air flow results from the passenger air flow p q times the number of people staying in the same room.
• the number of persons staying in the room is determined automatically, in particular by means of image recognition, people counting by motion detectors, preferably multiple motion detectors, by identification by radio, preferably by RFID transponder and / or by means of light barrier or specified by manual input.
• the automatic number of persons is preferred for reasons of convenience.
• An optionally provided, manually triggerable by a person, temporary ventilation of the room is comparable with a window ventilation, whereby the acceptance of air conditioning systems is improved.
• the volume control and / or regulation brings a very large supply air volume flow, preferably the maximum possible supply air volume flow, into the room for a predetermined time.
• the non-use minimum supply air flow V min1 has at least a predetermined value. This value may be maintained for a certain time or for the entire non-use time or may assume different predetermined values during the non-use time. As a predetermined value, the value zero comes into question, that is, there is no supply air introduced into the room.
• the ventilation of a room of a building with a volume flow control which introduces a volume flow for ventilation in the room, which has a space-related basic ventilation proportion and a person-dependent variable ventilation part.
• a timer By means of a timer is switched between a room usage time and a non-use time. During the space-use time, the size V min2 and during the non-use time the size V min1 must be considered. If V min1 is taken into account, the supply air flow into the room is not person- dependent .
• Due to the invention results in a building or space related basic ventilation proportion and a linearly dependent on the number of people in the room variable ventilation proportion.
• a person-considering system with building or spatial reference.
• the number of people in the room at the same time is determined automatically.
• image recognition people counting by sensors, in particular motion detectors, identification by radio, for example by means of RFID transponders, light barriers, etc.
• RFID transponders for example by means of RFID transponders, light barriers, etc.
• Due to the person-dependent adjustment of the supply air flow which comes for example from a central air conditioning system, the local, ie spatial, changing during the day person density within the room is taken into account. As a result, the best possible local air qualities are achieved with minimal energy consumption.
• an automatic identification of at least one person who is in the room can be taken into account, that is to say, that person is assigned and / or stored personal climate control of the volume flow control and / or regulation so that special features, for example holiday periods, Missions etc. of this person.
• a central room air treatment by controlling and / or regulating at least one ventilation fan, the fan speed can be minimized in a timely manner according to the respective ventilation requirement. This procedure is particularly energy-saving.

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• Engineering & Computer Science (AREA)
• Chemical & Material Sciences (AREA)
• Combustion & Propulsion (AREA)
• Mechanical Engineering (AREA)
• General Engineering & Computer Science (AREA)
• Air Conditioning Control Device (AREA)
• Ventilation (AREA)

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Citations (5)

Family Cites Families (6)

• 2008
  • 2008-10-08 DE DE102008050444.0A patent/DE102008050444C5/de not_active Revoked
• 2009
  • 2009-10-05 EP EP09012557A patent/EP2175208A1/fr not_active Withdrawn

Patent Citations (5)

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