EP1479981A1 - Verfahren zur Steurung von Luftbehandlung - Google Patents

Verfahren zur Steurung von Luftbehandlung Download PDF

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Publication number
EP1479981A1
EP1479981A1 EP03405359A EP03405359A EP1479981A1 EP 1479981 A1 EP1479981 A1 EP 1479981A1 EP 03405359 A EP03405359 A EP 03405359A EP 03405359 A EP03405359 A EP 03405359A EP 1479981 A1 EP1479981 A1 EP 1479981A1
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EP
European Patent Office
Prior art keywords
occupancy
information
space
tool
occupancy status
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Withdrawn
Application number
EP03405359A
Other languages
English (en)
French (fr)
Inventor
Vishal Mallick
Georg Setzer
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
ABB Technology FLB AB
Original Assignee
ABB Technology FLB AB
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by ABB Technology FLB AB filed Critical ABB Technology FLB AB
Priority to EP03405359A priority Critical patent/EP1479981A1/de
Publication of EP1479981A1 publication Critical patent/EP1479981A1/de
Withdrawn legal-status Critical Current

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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
    • F24F11/30—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
    • F24F11/30—Control or safety arrangements for purposes related to the operation of the system, e.g. for safety or monitoring
    • F24F11/46—Improving electric energy efficiency or saving
    • 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
    • F24F11/48—Control or safety arrangements for purposes related to the operation of the system, e.g. for safety or monitoring prior to normal operation, e.g. pre-heating or pre-cooling
    • 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
    • F24F11/62—Control or safety arrangements characterised by the type of control or by internal processing, e.g. using fuzzy logic, adaptive control or estimation of values
    • F24F11/63—Electronic processing
    • F24F11/65—Electronic processing for selecting an operating mode
    • 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

Definitions

  • HVAC heating, ventilation and air conditioning
  • HVAC heating, ventilation and air conditioning
  • Constant ventilation of intermittently or sporadically used spaces with a fixed flow rate is not only a waste of energy, it also places an unnecessary burdon on the air handling units (filters, fans) of a building.
  • one approach is to use presence sensors which detect the presence of humans in a particular place and in turn are used to regulate the air flow to that place.
  • an access control system directs information related to an individual passing the control system and entering a vacant room to the ventilation controller.
  • school or university timetables representing a discontinuous but regular occupancy pattern with weekly repetitions are used to control the ventilation of the corresponding classrooms or lecture halls.
  • CO2 carbon dioxide
  • a more sophisticated approach is to detect carbon dioxide (CO2) produced by the occupants, or a differential between inside and outside CO2 concentrations indicating the ventilation requirements, respectively.
  • an intermittent change in an occupancy status of the space and in particular the spontaneous entering of one or more persons into a meeting room is anticipated based on information from an occupancy information tool and ventilating means responsible for supplying fresh and/or conditioned air to said space are controlled accordingly in due time preceding the anticipated change in the occupancy status. Ventilation thus starts early enough to provide a good climate to the occupants of the space right from the effective beginning of their meeting or event, without wasting capacity or energy by running the ventilating means at all times or according to a crude schedule. Equally, the ventilation power can be reduced towards the presumed end of the meeting provided that the remaining air quality does not drop too rapidly.
  • the present invention is only concerned with ventilation and/or air conditioning purposes.
  • Other parameters of the room climate generally do have a distinctly different reaction time and either follow a control command instantly (e.g. lights, shades), or are solely changed on a time scale of hours (e.g. room temperature).
  • the occupancy-related information delivered by the occupancy information tool comprises an indication as to a level of occupancy such as the number of occupants, i.e. if the space will be fully occupied or only partly.
  • the air handling control system then controls a power level and/or a ventilation start time of the ventilating means accordingly.
  • Any electronic agenda or calendar with entries related to a planned use of a particular space is suited. Although such an entry generally represents the intention of the person who entered the relevant indications, the control system does not merely rely on the indicated occupation times.
  • the reaction of the control system, i.e. the ventilation power and/or start time may further take into account e.g. the number of invitees and the type of meeting, or the fact that a participant is expected to arrive early and spend the time until the start of the meeting in the space.
  • an access control tool having stored the arrival time and the access rights, restricted to certain areas or spaces, of a visitor may communicate said times and rights to the control system.
  • a hotel room booking tool or a meeting/conference room reservation tool may be interrogated by said control system and communicate arrival times of hotel guests or starting times of meetings.
  • primary information comprising data about an effective occupation of the space in the past is taken as an input for occupancy anticipation.
  • an occupancy pattern is deduced by the air handling control system. If the system notices that at a particular time of a particular day of the week the space under consideration used to be occupied or vacant, an extrapolation based on the assumption of a similar behaviour of the users during the next week or all following weeks is done.
  • the occupancy pattern may not be that simple and/or correlated to other parameters or secondary information.
  • more sophisticated procedures for statistical analysis e.g. based on neural networks, are needed for determining a significant occupancy pattern.
  • auxiliary sources of information apart from the occupancy information tool are consulted by the control system.
  • the live transmission of a popular sports event on TV may lead to an increase in the number of guests in a pub or other projection space.
  • sunny weather conditions may motivate a number of people to step outside and leave their office building at lunch time, thus reducing the need for fresh air in an in-house cafeteria.
  • the primary occupancy prediction of the aforementioned public spaces is correspondingly weighted with such secondary information provided by the TV program or the weather forecast.
  • Fig.1 depicts an air handling control system 1 which is connected to a ventilating means 2 depicted by a fan and which is in fluid connection with a closed space 20 in a building to which it provides fresh air.
  • the ventilating means 2 optionally may be coupled with an air conditioning device for cooling purposes, or may comprise dampers or may be part of a full air distribution/redirection system. Both the operation and the power of the ventilating means are controlled by the control system 1.
  • the latter receives relevant primary information 30 from an occupancy information tool 3 and deduces the next or even all future changes in an occupancy status of the space 20.
  • the air handling control system 1 generally comprises a processor means on which an appropriate computer program is executed and thereby produces control signals for the ventilating means 2.
  • the occupancy information tool 3 need not be physically separated from the system 1, i.e. the memory means storing the relevant occupancy-related information may be a component of the same computer or server as the processor means of the control system 1.
  • An additional source of information 4 provides secondary information 40 such as weather or TV program. This helps both in an analyzing process, e.g. by explaining why a particular occupancy status in the past appears to be incoherent, as well as in predicting the amplitude of forthcoming changes.
  • the occupancy information tool 3 may be a hotel reservation system intended for optimizing the usage of different floors, which system provides functions for booking a hotel room and stores estimated arrival times of hotel guests.
  • An example called "starlight front office system" is provided by Hogatex (http://www.hogatex.com/iprod1 e.html). A rather straightforward deduction of occupation times of individual hotel rooms from the reservation schedule is possible.
  • a building access control system as a further example of an occupancy information tool is offered e.g. by Lenel Systems International Inc. and described in detail in http://www.lenel.com/onguard/index.htm. "OnGuard Visitor" provides a web browser-based application that allows companies to manage visitors and employees throughout their enterprise. Data from this application based on the knowledge of who is entering the building and at what time can be fed in the air control system 1, and the latter deduces changes in an occupancy status of the person's office room.
  • ventilating means 2 being set to work in due time before the start of a scheduled meeting ensures an optimal ventilation right from the beginning of the event.
  • a computer program for controlling the ventilating means 2 according to the invention which is loadable into an internal memory of one or more digital computers comprises computer program code means to make, when said program is loadad in the computer, execute the method as described above.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Physics & Mathematics (AREA)
  • Fuzzy Systems (AREA)
  • Mathematical Physics (AREA)
  • Air Conditioning Control Device (AREA)
EP03405359A 2003-05-22 2003-05-22 Verfahren zur Steurung von Luftbehandlung Withdrawn EP1479981A1 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP03405359A EP1479981A1 (de) 2003-05-22 2003-05-22 Verfahren zur Steurung von Luftbehandlung

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP03405359A EP1479981A1 (de) 2003-05-22 2003-05-22 Verfahren zur Steurung von Luftbehandlung

Publications (1)

Publication Number Publication Date
EP1479981A1 true EP1479981A1 (de) 2004-11-24

Family

ID=33041144

Family Applications (1)

Application Number Title Priority Date Filing Date
EP03405359A Withdrawn EP1479981A1 (de) 2003-05-22 2003-05-22 Verfahren zur Steurung von Luftbehandlung

Country Status (1)

Country Link
EP (1) EP1479981A1 (de)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2011058753A (ja) * 2009-09-11 2011-03-24 Panasonic Electric Works Co Ltd 空調制御システム
FR3001529A1 (fr) * 2013-01-25 2014-08-01 Ass De Gestion De L Ecole Centrale D Electronique Dispositif de gestion de la temperature d'un local en fonction de l'agenda de l'utilisateur
EP3051366A1 (de) 2015-01-27 2016-08-03 MATEX CONTROLS Sp. z o.o. Steuerungsverfahren und -system für energieverbrauchende vorrichtungen für gebäude nach besetzungebene

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5088645A (en) * 1991-06-24 1992-02-18 Ian Bell Self-programmable temperature control system for a heating and cooling system
DE4333195A1 (de) * 1993-09-29 1995-03-30 Schoettler Lunos Lueftung Gerät zur Be- oder Entlüftung eines Innenraumes
US5620137A (en) * 1994-08-10 1997-04-15 Societe Francaise D'estudes Electroniques S F 2 E Room access control and power management installation
US6263260B1 (en) * 1996-05-21 2001-07-17 Hts High Technology Systems Ag Home and building automation system

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5088645A (en) * 1991-06-24 1992-02-18 Ian Bell Self-programmable temperature control system for a heating and cooling system
DE4333195A1 (de) * 1993-09-29 1995-03-30 Schoettler Lunos Lueftung Gerät zur Be- oder Entlüftung eines Innenraumes
US5620137A (en) * 1994-08-10 1997-04-15 Societe Francaise D'estudes Electroniques S F 2 E Room access control and power management installation
US6263260B1 (en) * 1996-05-21 2001-07-17 Hts High Technology Systems Ag Home and building automation system

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2011058753A (ja) * 2009-09-11 2011-03-24 Panasonic Electric Works Co Ltd 空調制御システム
US20120247748A1 (en) * 2009-09-11 2012-10-04 Panasonic Corporation Air control system
EP2476967A4 (de) * 2009-09-11 2013-03-27 Panasonic Corp Klimaanlagensteuerungssystem
FR3001529A1 (fr) * 2013-01-25 2014-08-01 Ass De Gestion De L Ecole Centrale D Electronique Dispositif de gestion de la temperature d'un local en fonction de l'agenda de l'utilisateur
EP3051366A1 (de) 2015-01-27 2016-08-03 MATEX CONTROLS Sp. z o.o. Steuerungsverfahren und -system für energieverbrauchende vorrichtungen für gebäude nach besetzungebene

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