October 8, 20196 yr Good day guys Where in GP is the best place to buy flat roof mounting with concrete ballasts? I buy from the usual guys but they dont offer mounting with concrete ballasts at a central shop. Something like this I have in mind. Edited October 8, 20196 yr by Fazil spelling error
October 8, 20196 yr why not just bolt the brackets down? Otherwise building lintels would work perfectly... you could bolt a regular frame to them, just drill carefully. edit: i think rubicon has them also... Edited October 8, 20196 yr by Dex_
October 8, 20196 yr 2 hours ago, Fazil said: Where in GP is the best place to buy flat roof mounting with concrete ballasts? I will send you the number for an installer in your area that uses a system that you fill with water, it then closes and the water cant evaporate. I am not sure where he buys it, but it does not penetrate the concrete roof and compromise its integrity. The containers are very light and afterwards you dont need to hall concrete slabs or containers full of ballast stones up unto the roof, you just run a hosepipe up there and you are sorted.
October 10, 20196 yr On 2019/10/08 at 7:21 PM, Fazil said: Good day guys Where in GP is the best place to buy flat roof mounting with concrete ballasts? Hi Fazil, I know this may sound odd to many but why not laying the panels flat on the roof? Like this. I made this for a customer in Purmerend which is 52,5 degrees north of the equator. SA is closer to the equator so should give even better results.
October 10, 20196 yr In summer the sun is only 5 degrees from vertical, but winter production would be really poor.
October 10, 20196 yr 22 minutes ago, DeepBass9 said: In summer the sun is only 5 degrees from vertical, but winter production would be really poor. Not a dead loss though by any means: I think the biggest losses will come from the fact that panels need to be at least 15 degrees to self-clean in the rain.
October 10, 20196 yr I suppose it also depends on the usage profile. If you are running ACs in summer it would make sense.
October 10, 20196 yr 3 hours ago, phil.g00 said: Not a dead loss though by any means: I think the biggest losses will come from the fact that panels need to be at least 15 degrees to self-clean in the rain. Exactly, you will have to clean your panels more. About this picture, where did you get that from? @DeepBass9 Its not as bad as you would expect but then here in Holland we still have netmetering so its much easier than the situation in SA.
October 10, 20196 yr @RikH, It's a screen grab from an online calculator: http://www.solarelectricityhandbook.com/solar-irradiance.html
October 10, 20196 yr Ok, interesting. Sometimes I use a tool that the EU government uses thats quite accurate as well. I'll give you a link when I'm back. Have to go now. Quick update before I go: https://re.jrc.ec.europa.eu/pvg_tools/en/tools.html Edited October 10, 20196 yr by RikH Added link
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