EP1982123A2 - Occupancy based ventilation system - Google Patents
Occupancy based ventilation systemInfo
- Publication number
- EP1982123A2 EP1982123A2 EP06848681A EP06848681A EP1982123A2 EP 1982123 A2 EP1982123 A2 EP 1982123A2 EP 06848681 A EP06848681 A EP 06848681A EP 06848681 A EP06848681 A EP 06848681A EP 1982123 A2 EP1982123 A2 EP 1982123A2
- Authority
- EP
- European Patent Office
- Prior art keywords
- room
- ventilation
- area
- amount
- processor
- 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- Withdrawn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
-
- 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)
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US11/318,047 US20070149109A1 (en) | 2005-12-23 | 2005-12-23 | Occupancy based ventilation system |
PCT/US2006/048224 WO2007073477A2 (en) | 2005-12-23 | 2006-12-18 | Occupancy based ventilation system |
Publications (1)
Publication Number | Publication Date |
---|---|
EP1982123A2 true EP1982123A2 (en) | 2008-10-22 |
Family
ID=38069241
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP06848681A Withdrawn EP1982123A2 (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) |
Families Citing this family (30)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
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 |
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 |
Family Cites Families (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5418366A (en) * | 1994-05-05 | 1995-05-23 | Santa Barbara Research Center | IR-based nitric oxide sensor having water vapor compensation |
JP2000088320A (ja) * | 1998-09-10 | 2000-03-31 | Mitsubishi Electric Building Techno Service Co Ltd | 自動換気システム |
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 |
US6916239B2 (en) * | 2002-04-22 | 2005-07-12 | Honeywell International, Inc. | Air quality control system based on occupancy |
JP2006001310A (ja) * | 2004-06-15 | 2006-01-05 | Denso Corp | 車両用内外気切替制御装置 |
-
2005
- 2005-12-23 US US11/318,047 patent/US20070149109A1/en not_active Abandoned
-
2006
- 2006-12-18 WO PCT/US2006/048224 patent/WO2007073477A2/en active Application Filing
- 2006-12-18 CN CNA2006800486418A patent/CN101346590A/zh active Pending
- 2006-12-18 EP EP06848681A patent/EP1982123A2/en not_active Withdrawn
Non-Patent Citations (1)
Title |
---|
See references of WO2007073477A2 * |
Also Published As
Publication number | Publication date |
---|---|
US20070149109A1 (en) | 2007-06-28 |
CN101346590A (zh) | 2009-01-14 |
WO2007073477A3 (en) | 2007-08-23 |
WO2007073477A2 (en) | 2007-06-28 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
PUAI | Public reference made under article 153(3) epc to a published international application that has entered the european phase |
Free format text: ORIGINAL CODE: 0009012 |
|
17P | Request for examination filed |
Effective date: 20080623 |
|
AK | Designated contracting states |
Kind code of ref document: A2 Designated state(s): DE FR GB |
|
STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: THE APPLICATION HAS BEEN WITHDRAWN |
|
18W | Application withdrawn |
Effective date: 20081023 |