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2. Ceiling fan - Wikipedia

   en.wikipedia.org/wiki/Ceiling_fan

   These fans, hence the name "mini" ceiling fan are relatively small in size, usually ranging from 40.64 cm to 91.44 cm, however, some still span to sizes as large as 106.68 cm in diameter. Additionally, unlike traditional ceiling fans, these fans typically use synchronous motors. Bladeless ceiling fans.

3. High-volume low-speed fan - Wikipedia

   en.wikipedia.org/wiki/High-volume_low-speed_fan

   A High-volume low-speed fan. A high-volume low-speed (HVLS) fan is a type of mechanical fan greater than 7 feet (2.1 m) in diameter. [1] HVLS fans are generally ceiling fans although some are pole mounted. HVLS fans move slowly and distribute large amounts of air at low rotational speed– hence the name "high volume, low speed."

4. Air changes per hour - Wikipedia

   en.wikipedia.org/wiki/Air_changes_per_hour

   Air changes per hour, abbreviated ACPH or ACH, or air change rate is the number of times that the total air volume in a room or space is completely removed and replaced in an hour. If the air in the space is either uniform or perfectly mixed, air changes per hour is a measure of how many times the air within a defined space is replaced each hour.

5. Lumen method - Wikipedia

   en.wikipedia.org/wiki/Lumen_method

   The CU value should be obtained by the manufacturer of the luminaire which is to be evaluated. In order to determine the CU on the manufacturer's table, a room cavity ratio (RCR) must be used. Also, the reflectance of the ceiling, walls and floor must be known. RCR = 5 x (room height) x (room width + room length) / [(room width) x (room length ...

6. [Latest] Global Ceiling Fans Market Size/Share Worth USD 17.6 ...

   lite.aol.com/tech/story/0022/20240627/9170422.htm

   “According to the latest research study, the demand of global Ceiling Fans Market size & share was valued at approximately USD 11.5 Billion in 2023 and is expected to reach USD 12.3 Billion in 2024 and is expected to reach a value of around USD 17.6 Billion by 2033, at a compound annual growth rate (CAGR) of about 4.5% during the forecast ...

7. Clean air delivery rate - Wikipedia

   en.wikipedia.org/wiki/Clean_Air_Delivery_Rate

   Whole house air cleaners are not covered by the CADR specification because the measurement is performed in a standard 1,008-cubic-foot (28.5 m 3) room, the size of a typical house room, which has different airflow patterns than whole-house filters. Measurements are made with the filter running and not running, so particles that naturally fall ...