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German to English translations [PRO] Tech/Engineering - Food & Dairy / beer preparation
German term or phrase:ausdampfen versus verdunsten
Dieser Artikel gibt eine Übersicht über die Grundlagen der Aromastoffausdampfung während der Würzebereitung als Beispiel für einen Lebensmittelherstellungsprozess. Hierfür werden die Unterschiede bezüglich der Vorgänge des "Verdampfens durch Kochen und des Verdampfens durch Verdunsten" erläutert.
I thought that Ausdampfen or Verdampfen is evaporation but does not seem to be the case here. Could Verdampfen be "stripping" und Verdunsten be "evaporation" in this particular case?
In particular, I would like to thank Audrey but - unfortunately - I cannot award points to her as she simply posted as a reference. In the end, I went for:
Ausdampfen - boil-off
Verdampfen - evaporisation
Verdunsten - vaporisation
on second thoughts, could ausdampfen be boil-off and verdunsten evaporation?
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Answers
14 mins confidence:
offgassing/off-gassing (or outgassing)
Explanation: I'd say that Verdampfen is "evaporation" and ausdampfen is offgassing/off-gassing.
-------------------------------------------------- Note added at 20 mins (2009-10-07 14:56:53 GMT) --------------------------------------------------
and verdunsten = evaporate
Example sentence(s):
Offgassing is the evaporation of volatile chemicals
Outgassing (sometimes called offgassing, particularly when in reference to indoor air quality) is the slow release of a gas that was trapped, frozen, absorbed or adsorbed in some material.
verdampfen: vaporize [specif. evaporate from the body of the liquid as well as from the surface, as in boiling]
verdunsten: evaporate [specif. evaporate from the surface]
[Source: A New German/English Dictionary for Chemists by Neville, Johnston and Boyd]
Vaporization and evaporation however, are not entirely the same processes. For example, substances like caesium, francium, gallium, bromine, rubidium and mercury may vaporize, but they do not evaporate as such. http://www.answers.com/topic/evaporation
Vaporization of an element or compound is a phase transition from the liquid phase to gas phase. There are two types of vaporization: evaporation and boiling.
Evaporation is a phase transition from the liquid phase to gas phase that occurs at temperatures below the boiling temperature at a given pressure. Note: evaporation usually occurs on the surface.
Boiling is a phase transition from the liquid phase to gas phase that occurs at or above the boiling temperature. Note boiling occurs below the surface.
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