We would really like feedback from as many people as possible to help us improve and develop the service.
The tool is available on line with a couple of feedback forms here
If you don't want to give feed back, but just want to play try here
nikcross - RenSMART Ltd.
|Site Planning Tool Trial||Nicholas Cross - 2010-02-25 15:52:55|
|Re: Site Planning Tool Trial||Bryan Rendall - 2010-03-04 21:14:12|
Nice start, but needs to tune up a bit in the accuracy department! I have tried it for my own location, and its only suggesting 14,125 kWh a year. Actual projections (based on production to date and original estimates) are over 20,000 kWh, potentially 24,000 (though not if we get as little wind as this month!). Production in 4 months is just over 7,000 kWh, so more than 14,125 is still estimated.
I guess one problem is that it either takes a generic 6 kW turbine or a basic specification, and makes it hard for end users to get a true indication of what their chosen machine will produce. The generic wind turbine model seems to fall quite a bit short of what will be achieved with a high efficiency machine.
The other problem, is that Orkney Islands Council is not listed in the available Planning Authorities, although I am not sure what odds that would make!
|Re: Site Planning Tool Trial||Nicholas Cross - 2010-03-05 09:49:44|
Thanks for sparing some time to look at our new tool.
I looked at the specification of the Scirocco turbine here http://www.eoltec.com/English/scirocco_en.htm and came up with an approximation using our page here http://www.rensmart.com/Information/Betz%27Law to find the efficiency of the turbine.
I also looked at the wind data recorded at your nearest Metar station here http://www.rensmart.com/Weather/Metar
When I adjusted the turbine hub height to 15m, the turbine diameter to 5.6m and the efficiency to 45% I get 16,600 kWh/year which is a bit closer to your value.
However, the current live version has inverter losses of 30%. We are about to revise that figure to 15% based on better data. This makes the value 20,100 kWh/year which is a pretty good match to your estimate and measurements.
Is your turbine the ROC project named Kirkwall Squash Club which we display here ?
Would you be interested in giving quotes through our service when it goes live in the next couple of weeks ?