WO2007073477A2 - Occupancy based ventilation system - Google Patents

Occupancy based ventilation system Download PDF

Info

Publication number
WO2007073477A2
WO2007073477A2 PCT/US2006/048224 US2006048224W WO2007073477A2 WO 2007073477 A2 WO2007073477 A2 WO 2007073477A2 US 2006048224 W US2006048224 W US 2006048224W WO 2007073477 A2 WO2007073477 A2 WO 2007073477A2
Authority
WO
WIPO (PCT)
Prior art keywords
room
ventilation
area
amount
processor
Prior art date
Application number
PCT/US2006/048224
Other languages
English (en)
French (fr)
Other versions
WO2007073477A3 (en
Inventor
Yuandong Gu
Barrett E. Cole
Original Assignee
Honeywell International Inc.
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 Honeywell International Inc. filed Critical Honeywell International Inc.
Priority to EP06848681A priority Critical patent/EP1982123A2/en
Publication of WO2007073477A2 publication Critical patent/WO2007073477A2/en
Publication of WO2007073477A3 publication Critical patent/WO2007073477A3/en

Links

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
    • F24F11/62—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
    • 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

  • the present invention relates to room ventilation systems.
  • the invention relates to an occupancy based system in which the amount of ventilation is determined by the number of persons in the area under consideration, such as a meeting room and the like. BACKGROUND OF THF. TNVENTION
  • a well controlled room allows the occupants to be comfortable and thus more efficient.
  • the temperature, CO 2 concentration, humidity, and body odor all increase with time.
  • Working efficiency in this environment can be low as discomfort increases.
  • a particular advantage in room ventilation control would be a system that takes into account the number of persons entering and leaving a room as well as the degree of activity in the room.
  • the occupancy based ventilation system for indoor air quality of a predetermined area adjusts the room ventilation system for providing outdoor air to the predetermined area as needed and as determined by the CO 2 concentration in the room as it is used by the number of people in the room.
  • the system includes a counter for counting the number of persons in the area and the amount of time each person remains in the area.
  • the counter produces a signal representing the sum of the number of persons times the amount of time for each person.
  • the counter is positioned by the entrance to the area.
  • the counter may use any sensor that is capable of identifying the entrance or egress of a person. Preferred sensors are selected from photo cells, IR detectors, RF detectors, pressure plates and a turnstile.
  • the system also includes a processor that adjusts the ventilation system for the area based on the signal produced.
  • the processor determines the amount of ventilation needed to maintain the CO 2 concentration in the room air at a predetermined level.
  • the preferred CO 2 concentration is 500 ppm or less.
  • the processor is further adapted to adjust the amount of ventilation based on the outside air temperature or based on the air temperature in the room.
  • the present invention operates as a system in which the amount of CO 2 present in the room is determined as a function of the number of people in the room and the length of time each is present.
  • the sum of person-time is directly proportional to the increase in CO 2 that the persons produce simply by exhaling.
  • the present invention regulates the amount of outside air that the ventilation management system brings into the room.
  • Ventilation air or outside air has a CO 2 concentration normally of about 300 ppm.
  • the maximum desirable concentration in the room should be 500 ppm or lower, a counter for counting the number of persons in said area and the amount of time each person remains in said area, said counter producing a signal representing the sum of the number of persons times the amount of time spent in the room for each person.
  • ⁇ P co2 /dt is the rate of CO 2 partial pressure change in the room
  • v co2 (t) is the rate of 300 ppm CO 2 /air ventilation into the room
  • N(t) is the number of people in the room as a function of time
  • j C o2 is the average CO 2 respiration rate of a person (assumed to be constant and independent of specific individuals).
  • the particular processor will be programmed to make the appropriate calculations and send a signal to the ventilation system for the room.
  • Using the present invention allows the elimination of many sensors that would otherwise be needed to sense temperature, CO 2 concentration, humidity, body odor and the like. By simply counting each and every time a person goes into and out of the room, and since the metabolism of an average person is more or less the same, the summed number of person/time units is correlated to the CO 2 generation rate and the room can be maintained at an efficient and comfortable atmosphere.

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)
  • Ventilation (AREA)
PCT/US2006/048224 2005-12-23 2006-12-18 Occupancy based ventilation system WO2007073477A2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP06848681A EP1982123A2 (en) 2005-12-23 2006-12-18 Occupancy based ventilation system

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US11/318,047 2005-12-23
US11/318,047 US20070149109A1 (en) 2005-12-23 2005-12-23 Occupancy based ventilation system

Publications (2)

Publication Number Publication Date
WO2007073477A2 true WO2007073477A2 (en) 2007-06-28
WO2007073477A3 WO2007073477A3 (en) 2007-08-23

Family

ID=38069241

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/US2006/048224 WO2007073477A2 (en) 2005-12-23 2006-12-18 Occupancy based ventilation system

Country Status (4)

Country Link
US (1) US20070149109A1 (zh)
EP (1) EP1982123A2 (zh)
CN (1) CN101346590A (zh)
WO (1) WO2007073477A2 (zh)

Cited By (1)

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CN115218465B (zh) * 2022-08-05 2023-08-18 宁波奥克斯电气股份有限公司 一种新风控制方法、控制装置和空调器

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US20090108082A1 (en) * 2007-10-31 2009-04-30 Richard Goldmann Programmatic climate control of an exercise environment
US10088820B2 (en) * 2009-12-02 2018-10-02 Thomas David Aiken Occupancy based demand controlled utility system
JP5528833B2 (ja) * 2010-01-29 2014-06-25 三洋電機株式会社 換気制御装置
CN102141287A (zh) * 2010-01-29 2011-08-03 三洋电机株式会社 空调控制装置
US9303930B2 (en) * 2010-10-18 2016-04-05 Mitsubishi Electric Corporation Air conditioner control device, air conditioner control method, and program
KR101058910B1 (ko) * 2010-12-23 2011-08-23 설융석 온라인을 이용한 스포츠 매치 활성화 시스템
CN102353751A (zh) * 2011-06-13 2012-02-15 北京世坤环境科技有限公司 室内空气质量评估方法及室内空气质量监测和分析系统
US20140069131A1 (en) * 2012-09-13 2014-03-13 Mitsubishi Electric Corporation Air conditioning system
US9435557B2 (en) 2013-01-24 2016-09-06 Belimo Holding Ag Control unit for an HVAC system comprising an economizer and method for operating such control unit
EP2793490A1 (en) * 2013-04-17 2014-10-22 Abb Ag Communication framework for adapting comfort at a place where a plurality of persons is residing
CN103472502B (zh) * 2013-09-18 2014-09-17 中山大学 动态展示区域空气质量和气象场的方法
US9958168B2 (en) 2014-01-28 2018-05-01 Illinois Tool Works Inc. Cooking exhaust hood ventilation system and related methods
KR102233616B1 (ko) * 2014-02-25 2021-03-30 삼성전자 주식회사 공기 조화 장치의 작동 방법 및 장치
CN104008300B (zh) * 2014-06-07 2017-01-18 江苏建筑职业技术学院 一种地下空间通风量算法
CN105318487B (zh) * 2014-06-18 2018-02-02 美的集团股份有限公司 空调器控制方法及空调器控制系统
CN105485840B (zh) * 2015-12-16 2018-11-09 深圳达实智能股份有限公司 一种空调送风的控制方法及系统
CN105674500B (zh) * 2016-02-22 2018-11-30 珠海格力电器股份有限公司 一种空调控制系统及其控制方法、装置
CN106091299A (zh) * 2016-06-22 2016-11-09 无锡昊瑜节能环保设备有限公司 一种中央空调节能控制系统
US10613504B2 (en) 2016-07-05 2020-04-07 Feedback Solutions Inc. Methods and systems for determining occupancy of a zone in a building
CN106196438A (zh) * 2016-07-06 2016-12-07 珠海格力电器股份有限公司 空调控制方法及装置、空调系统
WO2018039433A1 (en) 2016-08-24 2018-03-01 Delos Living Llc Systems, methods and articles for enhancing wellness associated with habitable environments
US11566801B2 (en) 2018-01-02 2023-01-31 Arizona Board Of Regents On Behalf Of Arizona State University Method and system for assessing metabolic rate and maintaining indoor air quality and efficient ventilation energy use with passive environmental sensors
CN109493973B (zh) * 2018-11-22 2021-11-02 中国建筑设计研究院有限公司 一种家用住宅空气环境健康风险预警方法及系统
CN111561764A (zh) * 2019-02-13 2020-08-21 青岛海尔空调器有限总公司 用于新风系统的控制方法、装置及存储介质
CN109812938B (zh) * 2019-03-11 2021-04-20 上海荷福人工智能科技（集团）有限公司 一种基于神经网络的空气净化方法及系统
SE545781C2 (en) * 2019-04-01 2024-01-09 Mikael Nutsos Method for on line monitoring of air flow at air tenninals of a ventilation system
CN115218357B (zh) * 2021-04-19 2023-09-19 海信集团控股股份有限公司 一种室内通风量的调节方法和设备
CN113280487B (zh) * 2021-05-31 2022-09-16 广东美的制冷设备有限公司 空调的自清洁控制方法、装置和计算机可读存储介质
CN114459100A (zh) * 2021-09-16 2022-05-10 苏州康华净化系统工程有限公司 一种净化空调和通风处理系统及方法

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US6369716B1 (en) * 2000-12-01 2002-04-09 Johnson Controls Technology Company System and method for controlling air quality in a room
JP2002195627A (ja) * 2000-12-26 2002-07-10 Toshiba Air Conditioning Co Ltd 空気調和装置
US20030199244A1 (en) * 2002-04-22 2003-10-23 Honeywell International Inc. Air quality control system based on occupancy

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN115218465B (zh) * 2022-08-05 2023-08-18 宁波奥克斯电气股份有限公司 一种新风控制方法、控制装置和空调器

Also Published As

Publication number Publication date
US20070149109A1 (en) 2007-06-28
CN101346590A (zh) 2009-01-14
WO2007073477A3 (en) 2007-08-23
EP1982123A2 (en) 2008-10-22

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