general_dude said...



Feeling bored & geeky to.
No expert but feel like blah ing on with what I do know.....

I think rain is not going to give you more power, but lets talk about temperature.
Wind energy (not quite the same as force by the way) is related to velocity cubed & density. So denser air should be more 'powerful' but the effect is not nearly as dramatic as higher wind speed.
Air is compressable so air will be denser if at higher pressure and at the same temp.
Air also expands when heated - PV=mRT
most of the time this means pressure x volume = 'somenumber' x temperature.
So this kind of means that if you double the temperature and keep the pressure the same the density (sort of opposite of volume) will halve. Only thing is temp is in kelvin & 0degrees C = 273Kelvin (I think) so if you change the temp from 0 deg C to 27 deg C this is only a 10% change in Kelvin so density will only change by 10%.
There is also a relationship between viscosity & temperature. Viscosity (which relates more to drag than lift - now starting to stretch the grey cells) for most normal fluids increases as temperatures decreases. Not sure if this would offset the above.

In summary: Lower temp should equal more powerful wind, but effect should be pretty small.

Here endith the lesson (until someone who really does know what they're talking about decides to join in!)