Wouldn't the same size glass spread over a larger solar collector (not focused) produce as much hot water without having to re- aim every three minutes?
If you want steam or looking for some sort of on demand you may be on to something.
Sometimes the answer is nothing
What is that? Is that a mongol horde? Can we fend them off with this tiny ad?
The new permaculture playing cards kickstarter is now live!
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