Renew-Reuse-Recycle | Proven 6KW at 5m/s maws

Proven 6KW at 5m/s maws

by Paul Shepherd at 2009-10-15 14:35:52 (Forum::Public::ProvenEnergy)

Is anyone out there operating a proven 6kw or Iskra at 5 m/s maws. I have got planning but not sure whether it is worth it at 5m/s. Its all very well quoting from the literature but real evidence is much more valuable

--
shepster

<< 15kW Whats up? 15kW Proven >>

View Comments (Threaded Mode) Printer Version

Proven 6KW at 5m/s maws	Paul Shepherd - 2009-10-15 14:35:52
Re: Proven 6KW at 5m/s maws	Bryan Rendall - 2009-10-17 15:53:49
Have you checked out the data from turbines on this site? None at exactly 5 m/s, but some round about. On the Home page, Small Wind Turbine Output Data, or http://spreadsheets.google.com/pub?key=pMgdBC-cyC82Xq-qAdpGMfw&gid=3 for a shortcut -- Bryan Rendall
Re: Proven 6KW at 5m/s maws	David Hobbs - 2009-11-23 14:26:27
My Proven6 (on a 15m mast) is in an area designated as 4.9m/s at 10m on the windspeed database. I suspect it is actually higher than this as we are at the top of rising ground (from the prevailing wind direction) that then falls away to flat fenland as far as the eye can see. In the first year of operation it produced 8,000 KWh. This year looks set to be a little lower although last week was the best ever with 460 KWh produced. I love the way this turbine continues to produce full output in storm-force winds although the Proven mast does bend and oscillate alarmingly at times. You'll be able to work out the benefit of getting paid 23.5p/KWh for 20 years compared with mine, which is currently 12p but due to fall to 9p next April. -- dch_control
Re: Proven 6KW at 5m/s maws	Richard fortin - 2010-09-23 18:27:54
-- Apiarist I had a Proven 6kw turbine on a 15m mast installed last December after indications that it would generate around 8,000 kwhs pa. In fact its output to date is only 885 kwhs. The site is about 140m above sea level and open to the SW which is the prevailing wind direction. There are trees in other directions but some as much as 250m away. The Proven power curves sent to me by the installer showed 1kwh @ 5m/s, 2.6 @ 7 and 5.3 @ 10 ( I gather these have now been withdrawn). The turbine has never come near these figures and in strong, steady SW winds has only produced about 25% of what the power curves indicated - eg 12hrs @ >10m/s produced only 17.5kwhs against a power curve based expectation of 63! I have a Davis weather station sited near the turbine mast on its own mast of about 7m. Its data is fed straight into my computer at 10 minute intervals. Because the installer has not yet commisioned the turbine or issued a MCS certificate I cannot even claim FIT payments for the small amount so far produced. Has anyone had similar experience or got any helpful, practical suggestions?

If you'd like to post comments on this site, just register here