Forced convection
Forced convection, created by the fan of a snow cannon
Forced convection is caused by external mechanical action on a fluid . This creates pressure differences that cause the fluid to flow . Such effects can be generated, for example, by pumps or fans .
With forced convection, natural convection almost always occurs , which, however, in most technically relevant cases is negligibly small compared to forced convection.
Examples
Forced convection is an effective means of supplying and removing heat.
- When drying hair with a blow dryer , convection is forced by a fan.
- With hot water heating, circulation pumps ensure that the hot water is also distributed to the remote components of the heating system.
- Cooling of electronic components such as computer processors with fans .
Other examples:
- The jet of air generated in aircraft engines is forced convection.
- Human influence can also cause forced convection. A swimmer slides through water, causing currents around the swimmer. The swimming strokes of the arms and legs lead to further overlapping currents.
Web links
- itw.uni-stuttgart.de: Forced convection
Individual evidence
- ↑ Brockhaus ABC Physics . 1st edition. VEB FA Brockhaus, Leipzig 1972, p. 793–794 , keyword convection .
- ↑ techniklexikon.net: Forced convection. Retrieved June 28, 2011 .
- ↑ GeoDZ: convection. Retrieved June 28, 2011 .
- ↑ Heat dissipation. (PDF; 432 kB) for electronic components. Higher Technical Federal Training and Research Institute Rankweil, archived from the original on August 16, 2010 ; Retrieved July 7, 2016 (Section 2 Convection).