Has anyone compared the actual output of solar water pumps from different manufacturers?
We are looking for a comparative test of different solar pumps in the same conditions
I have just spotted that this question has not been answered. I personally do not have any direct knowledge of any such study. I have linked this question to a few other groups to see if it will elicit and answer from anywhere else.
I don't think I'm fully understanding the question. Are you asking for data on if pumps meet their promised specifications at a particular total dynamic head and electrical input? Or you asking if someone has (for example) placed multiple pumps into the same borehole one after another, with the same solar input, and seen how they perform?
One of the best organisations to ask on any renewable energy issue is, The Centre For Alternative Technology, in Wales.
They were pioneers were renewable energy, have an extensive bookshop and an information service available.
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