Registered: 1388591029 Posts: 2,782
Reply with quote #11
I think 110C should be fine. If the temperature gets above that you'll have other problems.
__________________ Solar is like the wind. It may be free, but putting it to work isn't! Willie, Tampa Bay
Registered: 1352981942 Posts: 2,274
Reply with quote #12
I'm only asking because I wonder if the copper pipes inside the aluminum cans would get hotter than if the sun was directly on black painted pipes. The pipes inside the tubes are shaded, so the heat transfer is done via air inside the cans. Air isn't a good heat transfer medium compared to copper or water. But being the air in the cans is somewhat stagnant, the air in the cans may be hotter than direct sunlight on the pipes. Not criticizing, just wondering how it compares pipes without the cans. Could you poke a thermometer probe inside one of the cans? Greg in Minneapolis
Registered: 1492723901 Posts: 41
Reply with quote #13
I'll have to somehow seal the sensor in the column, at the very top I guess.
If the particle board I constructed the panel out of hasn't fallen apart in this weather I'll dig the unit out and hope for a sunny day!