Water Availability

Well you might start here:

http://www.bom.gov.au/lam/humiditycalc.shtml

or just google 'Psychrometric Chart' and find one to download yourself.

But what if the air isn't in australia???

milo " sorry for the punk answer, but Its better than doing my homework."

healybj8: Thank you, again. Table 2 in that reference was good enough for the calculations I need to run on recovering irrigation water from humid air. Almost 50 grams of water in a cubic meter of air with a dewpoint of 40 C. Chilling it to 5 C generates some significant volume when fed to a high efficiency trickle irrigation system.

Try to feed a hungry man, and you will both starve; try to support a poor man, and you will both be impoverished. But enable a poor man to support himself, and he will help his neighbor; enable a hungry man to grow his own food, and he will feed his village...george's law of human dignity.