solar thermal collector efficiency in rain

sunspot · 12-05-12, 08:55 PM

Can anyone point me to data on the effect, if any, of turbulent water flow, ie. rain, on solar thermal collector efficiency?

Thanks,

Daox · 12-06-12, 08:05 AM

Does it rain while its sunny much in Vancouver Island? No offense, but the question seems kind of strange.

sunspot · 12-06-12, 04:43 PM

Quote:

Originally Posted by Daox

Does it rain while its sunny much in Vancouver Island? No offense, but the question seems kind of strange.

I'm more interested in what wavelenght(s), of those that would normally pass through the glazing into the collector, would be reflected or refracted by the water, independent of light intensity.

Daox · 12-06-12, 05:00 PM

I wouldn't consider it an issue. If you have sun on a panel its going to heat up and evaporate that water very quickly.

Mikesolar · 12-08-12, 07:58 PM

The water will suck the heat out of the panel but of course it is just temporary. It will be gone very soon after the sun comes out

12-05-12, 08:55 PM	#1
sunspot Apprentice EcoRenovator Join Date: Apr 2012 Location: Vancouver Island, BC Posts: 146 Thanks: 29 Thanked 35 Times in 29 Posts	solar thermal collector efficiency in rain Can anyone point me to data on the effect, if any, of turbulent water flow, ie. rain, on solar thermal collector efficiency? Thanks,

12-06-12, 08:05 AM	#2
Daox Administrator Join Date: Aug 2008 Location: Germantown, WI Posts: 5,468 Thanks: 1,110 Thanked 367 Times in 298 Posts	Does it rain while its sunny much in Vancouver Island? No offense, but the question seems kind of strange. __________________ Current project - To view links or images in signatures your post count must be 0 or greater. You currently have 0 posts. To view links or images in signatures your post count must be 0 or greater. You currently have 0 posts. & To view links or images in signatures your post count must be 0 or greater. You currently have 0 posts.

12-06-12, 05:00 PM	#4
Daox Administrator Join Date: Aug 2008 Location: Germantown, WI Posts: 5,468 Thanks: 1,110 Thanked 367 Times in 298 Posts	I wouldn't consider it an issue. If you have sun on a panel its going to heat up and evaporate that water very quickly. __________________ Current project - To view links or images in signatures your post count must be 0 or greater. You currently have 0 posts. To view links or images in signatures your post count must be 0 or greater. You currently have 0 posts. & To view links or images in signatures your post count must be 0 or greater. You currently have 0 posts.

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12-08-12, 07:58 PM	#5
Mikesolar Master EcoRenovator Join Date: Aug 2012 Location: Toronto Posts: 958 Thanks: 40 Thanked 158 Times in 150 Posts	The water will suck the heat out of the panel but of course it is just temporary. It will be gone very soon after the sun comes out