Is there any hard data out there or any personal experience about reduced cooling load as a result of solar panels installed on a south facing roof? So far I have found 1 study showing a 5 degree…Continue
"Any type of shading will help greatly. One of the biggest, if not the biggest, factor for high summertime attic temperature is the type of roofing material used. The most commonly installed roofing is asphalt shingles, which when exposed to the…"
"I don't think anyone can dispute the fact that the roof would be cooler, although putting a number on it would be difficult.
As far as using it to lower the cooling load and therefore the KWH, in my opinion would be risky and unwarranted.…"
Is there any hard data out there or any personal experience about reduced cooling load as a result of solar panels installed on a south facing roof? So far I have found 1 study showing a 5 degree roof temperature difference on 1 roof over 3 days...In my mind you would be able to see a marked difference in summer heat gain from an exposed roof compared with a roof with solar panels.. The home I currently am investigating is in New England, has a dark colored shingles and I'm looking in…See More
"Sidenote first, the thermal units are a commercial brand sold with the pump, they make custom panels used in a proprietary system, it's pricey yet payback is pretty fast & afaik they can adapt theirs to existing brands.
Yup in summer my…"
"There are some affordable data logging thermometers, it would be a good experiment to install one underneath a shingle under an array and to install one on the same roof plane under a shingle but not under the array; and to record the changing…"
"Tom, I don'the see any reason why we shouldn't harvest the heat beneath the panels; I would be worried about the roof top temperature becoming too high in the summer and frying the micro inverters (terminals are rated at 75 C) if there was…"
"Agree that shading does work to reduce heat-load nice stats from Dennis, now consider in winter using the panels to heat air by mounting them with 3/4" air-sealed gap ducted to the system to collect it, same system cools in summers storing at…"
"I just got back from the NABCEP conference in San Diego. John Schehl from RISE, indicated there is heat build up that occurs under PV modules. The heat build-up is not a direct function of UV, rather heat build up from module heat…"
"We have PV panels on our roof, we tracked the panel temps, microinverter temps, and attic temps for a couple of years. We did see a definite reduction in attic temps under the panels. Five degrees F is reasonable. But…"
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