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  1. waterwheeler

    low revving generator for water wheel

    Assuming I use a car alternator, what can I expect in terms of efficiency? And what sort of power can I expect at what sort of revs. Water is delivered to site via 60m of 6" plastic pipe, so I can't increase flow rate much above 20 l/sec without sacrificing head. Also this flow rate is the...
  2. waterwheeler

    low revving generator for water wheel

    My hunch is that high revving generators are the general rule because modern power sources are high revving. High speed bearings and gear trains running 24/7 are likely to be noisy inefficient and subject to heavy wear. In this application I must have quiet, efficient generation from a very low...
  3. waterwheeler

    low revving generator for water wheel

    I'm building a small water wheel and want to generate electricity. Not fussy about voltage or frequency but given limitations of site(2m head, perhaps 20 l/sec flow, so about theoretically about 0.5 Kw) it must be highly efficient. Everyone seems to agree that conventional generators are not...

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