What he said.
PS:
Quote:
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Originally Posted by Gooserider
Thus a sub-ambient cooling system in the Sahara (where there is low humidity, and a very low dew point) might not get any condensation.
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Not the best example (but we get the point).
At night , temperatures can (and usually do) drop down to freezing point in the Sahara Desert. It's not uncommon to see - 5 ºC or less (much less in some areas).
If you're from, as an example, Algeria, and live in the outskirts of the Sahara (which is not hard, as it is like, most of the country) , you can get in certain regions up to 60 or 70% relative humidity and a temperature intervals of -5 ºC to 50 something ºC .
"Nice weather we're having, eh?".
