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Politics : Formerly About Advanced Micro Devices -- Ignore unavailable to you. Want to Upgrade?


To: Jeff Hayden who wrote (1433514)1/15/2024 2:50:21 PM
From: Eric  Respond to of 1588061
 
Spot on.

You know your stuff.



To: Jeff Hayden who wrote (1433514)1/15/2024 3:19:51 PM
From: Doren  Read Replies (1) | Respond to of 1588061
 
Yes. BATTERIES are rated by watt hours...

but they are sold by amp hours which means nothing until you convert amp hours to watt hours.

amp hours x voltage = watt hours

I'm on a solar forum on FB... amazing how many people fall for the amp hours thing. I guess it's because most people are thinking 12V. A 24 volt battery system with the same amp hour rating stores 2x as much theoretically.

Watt hours on batteries are one of the main concerns. I'm slowly boning up on building my own system on my next home. Hopefully off grid. Will Prowse is great. Created a great educational business on youtube.




To: Jeff Hayden who wrote (1433514)1/15/2024 4:32:26 PM
From: Tenchusatsu1 Recommendation

Recommended By
longz

  Respond to of 1588061
 
Jeff,
The sun provides about 1360 watts/square meter on the Earth with the sun directly overhead.
Correction: 1000W/m2.

1360W/m2 is the amount of energy in sunlight before it hits Earth's atmosphere.

Tenchusatsu



To: Jeff Hayden who wrote (1433514)1/15/2024 7:53:15 PM
From: Jeff Hayden  Read Replies (2) | Respond to of 1588061
 
I agree that energy flux at the surface was less than the 1.360 kW direct energy from the sun

I was trying to imply power reduction by atmospheric filtering, cloud filtering, planetary surface position would result in lowering overall energy flux on solar panels. In all, I think 1kW surface flux is a bit arbitrary.