convection

EXP: la convection est induite par des différences de densités (dues à des différences de températures, "convection naturelle") ou à des différences de pressions (dues à des mouvements d'air, "convection forcée")

Source : EPFL, Transport de chaleur: conduction - convection - rayonnement, 1995, p. 2 ([Internet, 2017-01-12](http://moodle.epfl.ch/pluginfile.php/179921/mod_resource/content/0/illustrations/TransportChaleur.pdf))

EXP: z. B. Raumheizung; es wird zwischen freier und erzwungener Konvektion unterschieden (bzw. bei konstantem Druck oder infolge mechanischer Druckdifferenz)

Source : C. Zürcher / T. Frank, Bauphysik, 2010, S. 33

Source : C. Zürcher / T. Frank, Bauphysik, 2010, S. 33

EXP: la convezione può essere causata dalle variazioni di temperatura (convezione naturale) o dall’azione meccanica, ad es. di apparecchi e ventilatori (convezione forzata)

Source : Università degli Studi di Genova/C. Isetti, Dipartimento di Scienze dell'Architettura, Corso di Fisica tecnica e ambientale/Conduzione e convezione, 2011/2012, p. 1 ([Internet, 2017-01-12](https://architettura.unige.it/per/doc/isettic/matdid11_12/pdf/cap9.pdf))

EXP: convection can be "forced" (for example driven by fans), or "natural" (also "free convection") resulting from pressure differences between one part of the building and another

Source : Autodesk, Building Design > Building Energy Fundamentals > Heat Energy Flows in Buildings ([Internet, 2017-01-12](https://sustainabilityworkshop.autodesk.com/buildings/heat-energy-flows-buildings))

Source : Z. S. Spakovszky, Thermodynamics and Propulsion, 2002 ([Internet, 2018-09-23](http://web.mit.edu/16.unified/www/FALL/thermodynamics/notes/node121.html))

EXP: p.ex. stgaudament; ins fa la differenza tranter convecziun libra e convecziun sfurzada (resp. tar pressiun constanta u en consequenza da differenza da pressiun mecanica)

Source : Pledari Grond, "convecziun" ([internet,2018-02-08](http://www.pledarigrond.ch/rumantschgrischun/#searchPhrase=konvektion))