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Fan

Belongs to:
Climatization
Synonyms:
Ventilator
Description:

A ventilator is an electrically driven flow machine that generates an airflow with the help of a moving rotor.

Due to the operation with an electric motor, alternating electric and magnetic fields can occur even in the kHz region.

Type of field:
electric and magnetic

Measurements (acc. to literature)

window air conditioner
Measurand Value Feature Remarks
magnetic flux density 0.1 µT (mean, measured) - at a distance of 60.96 cm; examined frequency: 60 Hz [1]
magnetic flux density 0.3 µT (mean, measured) - at a distance of 30.48 cm; examined frequency: 60 Hz [1]
magnetic flux density 0.4 µT (maximum, measured) - at a distance of 121.92 cm; examined frequency: 60 Hz [1]
magnetic flux density 0.6 µT (maximum, measured) - at a distance of 60.96 cm; examined frequency: 60 Hz [1]
magnetic flux density 2 µT (maximum, measured) - at a distance of 30.48 cm; examined frequency: 60 Hz [1]
table fan
Measurand Value Feature Remarks
electric field strength 1.51 kV/m (maximum) - at the surface of the device at 50 Hz [2]
magnetic flux density 1 µT (maximum) - maximum value at a distance of 80 cm; examined frequency: 50 Hz resp. 60 Hz [3]
magnetic flux density 8 µT (maximum) - maximum value at a distance of 40 cm; examined frequency: 50 Hz resp. 60 Hz [3]
magnetic flux density 10.5 µT (maximum) - maximum value directly in front of the device; examined frequency: 50 Hz bzw. 60 Hz [3]
magnetic flux density 30–4,000 µT (maximum) - measurement span of 15 table fans; measurement bandwidth: 5 Hz - 2 kHz [4]
magnetic flux density 637 µT (maximum) - at the surface of the device at 50 Hz [5]
fan (without any further specification)
Measurand Value Feature Remarks
magnetic flux density 0.1 µT (maximum, measured) - at a distance of 121.92 cm; examined frequency: 60 Hz [1]
magnetic flux density 0.3 µT (mean, measured) - at a distance of 30.48 cm; examined frequency: 60 Hz [1]
magnetic flux density 0.5 µT (maximum) - at a distance of 80 cm; examined frequency: 50 Hz bzw. 60 Hz [3]
magnetic flux density 0.6 µT (maximum, measured) - at a distance of 60.96 cm; examined frequency: 60 Hz [1]
magnetic flux density 1.3 µT (mean, measured) - average of 4 devices at a distance of 50 cm; measurement bandwidth: 0 - 3000 Hz [6]
magnetic flux density 2.5 µT (maximum) - at a distance of 40 cm; examined frequency: 50 Hz bzw. 60 Hz [3]
magnetic flux density 5 µT (maximum, measured) - at a distance of 30.48 cm: examined frequency: 60 Hz [1]
magnetic flux density 6.5 µT (maximum) - directly beneath the device; examined frequency: 50 Hz resp. 60 Hz [3]
magnetic flux density 10.26 µT (mean, measured) - average of 4 devices at a distance of 10 cm; measurement bandwidth: 0 - 3000 Hz [6]
portable fan
Measurand Value Feature Remarks
magnetic flux density 13.83 nT (maximum) - spatially averaged value at distances from 30 cm - 3.05 m; examined frequency: 60 Hz [7]

References

  1. No authors listed (1992): EMF in your Environment: Magnetic Field Measurements of Everyday Electrical Devices
  2. Leitgeb N et al. (2008): Electric emissions from electrical appliances
  3. Farag AS et al. (1998): Electromagnetic fields in the home
  4. Leitgeb N et al. (2008): Magnetic emissions of electric appliances
  5. Leitgeb N et al. (2008): Magnetic emission ranking of electrical appliances. A comprehensive market survey
  6. Ainsbury EA et al. (2005): An investigation into the vector ellipticity of extremely low frequency magnetic fields from appliances in UK homes
  7. Mader DL et al. (1992): Residential exposure to 60-Hz magnetic fields from appliances