|
Demand Controlled Ventilation (DCV) is automatic adjustment of ventilation equipment to meet occupant demand. DCV is a control method used to modulate the volume of fresh air taken into a building or other occupied space by mechanical air conditioning equipment. Sensors or time schedules are used to estimate ventilation need and automated control loops are used to meet a set point determined by a design engineer. The design engineer references a codified standard when determining ventilation set points. There is a significant energy saving potential in rigorous outdoor air control. 〔http://www1.eere.energy.gov/femp/pdfs/fta_co2.pdf〕 Common reference standards for ventilation: * ISO ICS 91.140.30: Ventilation and air-conditioning systems * ASHRAE 62.1 & 62.2: The standards for Ventilation and Indoor Air Quality == Examples of estimating occupancy == * Timed schedules * Motion sensors (various technologies including: Audible sound, inaudible sound, infrared)〔KMC Controls. (2013). Demand Control Ventilation Benefits for Your Building. Retrieved 25 March 2013, from http://www.kmccontrols.com/docs/DCV_Benefits_White_Paper_KMC_RevB.pdf〕 * Gas detection (CO2) In a survey on Norwegian schools, using CO2 sensors for DCV was found to reduce energy consumption by 62% when compared with a constant air volume (CAV) ventilation system.〔Mysen, M., Berntsen, S., Nafstad, P. & Schild, P. G. (2005). Occupancy Density and Benefits of Demand-controlled Ventilation in Norwegian Primary Schools. Energy and Buildings, 37(12), 1234–1240. Retrieved October 9, 2012.〕 * Positive control gates * Ticket sales * Security equipment data share (including people counting video software)〔(【引用サイトリンク】title=Occupancy Measurement, Modeling and Prediction for Energy Efficient Buildings )〕〔(【引用サイトリンク】title=Carbon Dioxide Measurement & People Counting for Demand Controlled Ventilation )〕 * Inference from other system sensors/equipment 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Demand controlled ventilation」の詳細全文を読む スポンサード リンク
|