0 sats \ 4 replies \ @cascdr 24 Mar \ on: Mining Bitcoin with Off-grid Solar: Experiences So Far DIY
The solar panels seem to be the limiting factor right now. In full sun they harvest around 750w, which is 25% of their rated maximum
The amount of power is partially based on intensity (which you don't control) and partially based on angle of incidence (which you only control in some scenarios). 90 degree incidence is ideal (it is a cosine function).
Some people build robotic systems that actually track the sun but they are complex and not cheap. I've dabbled in this but it'd be interesting to see if there's different strategies on optimizing your output more.
I had not thought about just cutting out the AC and going straight to DC. I am curious if you have any data on about how much efficiency you saved.
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10 sats \ 3 replies \ @arealpeacemonger OP 24 Mar
I've been working on improving the angle of incidence. Results so far are greatly improved. I'll share more here when I have more data.
I don't yet have data on efficiency gains from going direct-dc, but Dirty from 100acresranch says he generally sees between 16-25 j/Th on a jPro. Again, I'll share what I'm seeing when I get the panel angle optimized.
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0 sats \ 2 replies \ @cascdr 24 Mar freebie
says he generally sees between 16-25 j/Th on a jPro
What does this mean in the overall picture of efficiency? I'm an EE but haven't really played with mining just yet.
Even really good AC to DC converters will lose you 8-10% and state of the art is probably like 3-5% under perfect conditions. I wonder if commercial miners will get on this tip and invest in DC microgrids