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I think that you and I are measuring it differently. You statedDepends on cloud cover and time of day. See above
Example - semaphore is at latitude -26, but highest average year round output is at elevation 65 degrees, and 25 degrees would get him only 80% of what he would average at 65 degrees
That is why I qualified it:
derp I hadn't realized, you were talking about the plane the panel sits on
, and not the direction of the normal of the panel's plane
No sweatderp I hadn't realized, you were talking about the plane the panel sits on , and not the direction of the normal of the panel's plane
90-25 = 65 as I simulated, so we are in agreement
What you call roof pitch, I am familiar with calling zenith, with elevation being the difference between zenith and a right angle (elevation being elevation above the horizon).
The reason for the distinction between zenith and elevation is that zenith takes into account azimuth, and is therefore the minimum angle between the face of the panel (vector normal to the plane the panel sits on) and the vector of the sun's apparent location relative to a flat and plumb plane on the ground
a few thousand lines of matlab - I canablized it mostly from my thesis which was to do with modeling Concentrated Solar Power collectors of various new designs and materialsNo sweat
What tool do you use to generate the graphs?
Have you tried licensing it?
Hey can you check Kyalami corner. CNR main road and r55
Nope - that sort of business side isnt really my thing.
I live near there - do you know what your roofs' azimuth and elevations are? I can add that to the simulation
Given the really high number of black days you get in summer, if your plan is to off grid without a generator, I would say anything around 70 degrees is pretty good for you. Flatter if you want to survive black days in summer better (up to lets say 85 degrees), and steeper for more winter production (down to 65 degrees). - I'd go with 70 or 75 if possible.
Thanks. It's a slab roof so angle shouldn't be an issue when building the mountain i doubt I'll manage to go fully offgrid but can always use it as a backup.
Dump the solar geyser bump up your panels. For 30k you can 8 to 10 more panels. I have solar Geysers and would hands down add that money onto the installation I did. I have a sunsynk 8kw and hubbles I'm super happy with.
mybroadband.co.za
I agree, especially if you can’t feed back to the grid. Less efficient but much cheaper (when a PV system is already in place) and works better in cloud cover as wellDump the solar geyser bump up your panels. For 30k you can 8 to 10 more panels. I have solar Geysers and would hands down add that money onto the installation I did. I have a sunsynk 8kw and hubbles I'm super happy with.
You can see how my installation went.
Snyper's Solar Farm
Hi all, I am finally getting round to making this thread. After loads of research and another bout of load shedding I finally decided to pull the trigger and load shed Eskom. Prior to going solar I already had all the lights on LEDs, house is kitted with energy efficient appliances and...
I'm sure others can also comment if this is a better approach.
So just to confirm the frame must be at 70 degrees. So almost vertical?
Yes. The face of the panel must be 70 degrees up from the horizon (i.e., facing mostly completely up toward the sky; and the angle between the ground and the back side of the panel being 30 degrees)
Thanks makes sense now
sounds like very expensive with you water being solar heated - if you're willing to send me a PM with where you are I can work out how many panels you need for your roof
