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freebeard · 09-21-2018, 03:12 PM

I wish I could sell a used car for my asking price.

Energy Matters:FLAT PLATE VS. EVACUATED TUBE SOLAR HOT WATER COLLECTORS/

These evacuated tubes are more efficient (and expensive) than a flat plate collector. If these tubes were inclined on a N-S axis at an angle dependent on the latitude; and if they were spaced further apart, each with a reflective sleeve that rotates to maintain an orientation to the Sun — then they would be still more efficient.

09-21-2018, 03:12 PM	#2958 (permalink)
freebeard Master EcoModder Join Date: Aug 2012 Location: northwest of normal Posts: 28,549 Thanks: 8,091 Thanked 8,880 Times in 7,328 Posts	I wish I could sell a used car for my asking price. Energy Matters:FLAT PLATE VS. EVACUATED TUBE SOLAR HOT WATER COLLECTORS/ These evacuated tubes are more efficient (and expensive) than a flat plate collector. If these tubes were inclined on a N-S axis at an angle dependent on the latitude; and if they were spaced further apart, each with a reflective sleeve that rotates to maintain an orientation to the Sun — then they would be still more efficient. __________________ . .Without freedom of speech we wouldn't know who all the idiots are. -- anonymous poster ____________________ . .Three conspiracy theorists walk into a bar --You can't say that is a coincidence.