--- In [EMAIL PROTECTED], "michaelsmithwell" <[EMAIL PROTECTED]>
wrote:
>
>
> The stream flowing across our property comes from an abandoned mine
> portal. The Ph is in the 4-5 range. Will this be a factor in
> developing a strategy to harness this stream?
Michael
My stream is also acidic. I have not noticed any problems in the
several years I have been running microhydro. The turgo runner on the
turbine is not metal, so obviously no erosion. The turbine housing is
cast aluminium which is painted. Again, no noticable erosion.
Penstock plastic - no erosion. However I do find that concrete blocks
used for forebay do erode at water level. Since I coated these in
cement render I have had no further trouble.
David
www.OffTheGrid.co.uk
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