- 関
- air current
WordNet
- the flow of air; "she adjusted the fan so that the airflow was directed right at her" (同)air flow, flow of air
PrepTutorEJDIC
- (航空機・自動車が引き起こす)気流
Wikipedia preview
出典(authority):フリー百科事典『ウィキペディア(Wikipedia)』「2012/04/27 10:41:50」(JST)
[Wiki en表示]
In engineering, the airflow or air flow is a measurement of the amount of air per unit of time that flows through a particular device.[1][2]
The amount of air can be measured by its volume or by its mass. Typically it is measured by volume, but for some applications it is necessary to measure it by mass, as air is a gas and therefore its volume can vary with temperature.
Contents
- 1 Units
- 1.1 By volume
- 1.2 By mass
- 2 Measurement
- 3 Control
- 4 Uses
- 5 See also
- 6 References
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Units
Typical units to express airflow are[3]:
By volume
- l/s (litres per second)
- m3/h (cubic metres per hour)
By mass
- kg/s (kilograms per second)
Measurement
The instrument that measures airflow is called an airflow meter.
Control
The equipment that regulates the airflow is called a damper. The damper can be used to increase, decrease or completely stop the flow of air. A more complex device that can not only regulate the airflow but also has the ability to create an airflow is an air handler.
Uses
Measuring the airflow is necessary in many applications such as ventilation (to determine how much air is being replaced) and engines (to control the Air–fuel ratio).
See also
- Volumetric flow rate
- Air flow meter
- Damper (flow)
- Air handling unit
References
- ^ "OMEGA ENGINEERING - Flow Control". Omega.com. 1984-11-21. http://www.omega.com/techref/flowcontrol.html. Retrieved 2012-04-24.
- ^ http://www.engineersedge.com/fluid_flow/volumeetric_flow_rate.htm
- ^ "Airflow Unit Conversion". Comairrotron.com. http://www.comairrotron.com/airflow_calc.shtml. Retrieved 2012-04-24.
UpToDate Contents
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English Journal
- Biodrying for municipal solid waste: volume and weight reduction.
- Bilgin M1, Tulun Ş.
- Environmental technology.Environ Technol.2015 Jul;36(13):1691-7. doi: 10.1080/09593330.2015.1006262. Epub 2015 Feb 16.
- Biodrying is a variation of aerobic decomposition used for the mechanical-biological treatment organic substances to dry and partially stabilize residual municipal waste. This study focuses on the volume and weight reduction biodegradation of the biodrying process using municipal solid waste and the
- PMID 25571768
- "Pierce and inhale" design in capsule based dry powder inhalers: Effect of capsule piercing and motion on aerodynamic performance of drugs.
- Martinelli F1, Balducci AG2, Rossi A1, Sonvico F1, Colombo P1, Buttini F3.
- International journal of pharmaceutics.Int J Pharm.2015 Jun 20;487(1-2):197-204. doi: 10.1016/j.ijpharm.2015.04.003. Epub 2015 Apr 2.
- In this work three capsule-based dry powder inhalers, available for generics product development, were compared. Two technologically different dry powder formulations were used in order to relate the capsule piercing position and motion in the device to their aerodynamic performance. A "pierce and i
- PMID 25843756
- Computed tomography assessment of airways throughout bronchial tree demonstrates airway narrowing in severe asthma.
- Brillet PY1, Debray MP2, Golmard JL3, Ould Hmeidi Y4, Fetita C5, Taillé C6, Aubier M6, Grenier PA7.
- Academic radiology.Acad Radiol.2015 Jun;22(6):734-42. doi: 10.1016/j.acra.2014.12.026. Epub 2015 Apr 14.
- RATIONALE AND OBJECTIVES: To analyze airway dimensions throughout the bronchial tree in severe asthmatic patients using multidetector row computed tomography (MDCT) focusing on airway narrowing.MATERIALS AND METHODS: Thirty-two patients with severe asthma underwent automated (BronCare software) anal
- PMID 25882092
- Nasal symptomatology, obstruction, and paranasal sinus opacity in patients with chronic obstructive pulmonary disease.
- Celakovsky P1, Smatanova K, Kalfert D, Pracharova S, Koblizek V.
- Acta oto-laryngologica.Acta Otolaryngol.2015 Jun;135(6):598-601. doi: 10.3109/00016489.2014.999876. Epub 2015 Feb 12.
- CONCLUSION: Patients with chronic obstructive pulmonary disease (COPD) more frequently suffer from nasal symptoms as well as upper respiratory tract obstruction compared with the healthy population.OBJECTIVE: The relationship between chronic rhinosinusitis and bronchial asthma has been studied in de
- PMID 25677759
Japanese Journal
- 高層ビル全体の換気性状の予測に関する研究 : エレベーター扉前後の差圧の実測値と計算値の比較
- 送風機用永久磁石同期モータの風量一定制御 (回転機 リニアドライブ 家電・民生合同研究会・小形モータ一般・永久磁石モータ一般/リニアドライブ一般/家電・民生一般)
- 木戸 尚宏,松山 亮,柳田 靖人 [他]
- 電気学会研究会資料. HCA 2015(24-40), 77-82, 2015-08-06
- NAID 40020572834
- 気道病変の画像と呼吸機能 (特集 COPDの画像 : 画像と呼吸機能)
- 家庭用エアコン暖冷房時の気流環境と消費電力の同時計算ツールの開発 : 熱源特性モデルを組み込んだCADIEE-Airflowの精度検証
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- 英
- airflow、air current