VAWT: Difference between revisions
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*50 kW brushless generator head, 1800 rpm - $2.2k [http://cgg1.com/Brushless--Single%20phase--2%20bearing--120-240.htm] | *50 kW brushless generator head, 1800 rpm - $2.2k [http://cgg1.com/Brushless--Single%20phase--2%20bearing--120-240.htm] | ||
=Industry Standards= | =Industry Standards= | ||
*Aeolos - up to 10 kW size - [http://www.windturbinestar.com/wind-turbine-pictures.html] | *Aeolos - up to 10 kW size - [http://www.windturbinestar.com/wind-turbine-pictures.html]. Price? | ||
*ANew S1 - 16kW - $65k kit plus structure (total about $100k) - [http://www.anew-institute.com/vertical-wind-turbine.html] | |||
=Alternative Design: VAWT as Water Lifting Device= | =Alternative Design: VAWT as Water Lifting Device= | ||
Revision as of 01:25, 5 May 2016
Some examples of different types of Vertical Axis Wind Turbine (VAWT): (A) Darrius type; (B) Gorlov type; (C) H-type; (D) Savonius type; (E) Twisted Savonius type; (F) mixed Savonius and Darrieus type; (sources for images: see [1])
![[1]](http://opensourceecology.org/wiki/File:VAWT_types.jpg){kind=link}
Calculations
- Power Production - take this 16 kW VAWT - [2] at $65k in kit form (assumes $30k more for BOS). For average 6.5 m/s wind in Maysville, MO - power production is 4 kW for 8760 hours - or 35 MW hours! At 10 cents per kWhr - 35,000 kWhr is $3500 worth of electricity. Clear capacity to export to the grid.
- 7.4x4.7 diameter and height for a swept area of 35 sq m. If power proportional to swept area, then 3 kw at 6 m/s translates to 1 kW average power with a 12 sq meter swept area.
- Check out assembly - [3].
- Comparison to PV - $4/Watt vs 40 cents per watt for PV - 10x less cost for PV. Cost of wind can be reduced to: $3k generator (off shelf), $10k structure. 3" shaft and bearings - $30/foot for shaft of 10' length = $300 + $100 bearings. DIY direct drive PM generator cost should be explored. Brute force electronics can be done. Cost design calculations should be done.
- Sample structure - 1/2" wall square tubing legs -120' - $3240 for tower + concrete 10 yd ($1000) + BOS = $5k tower. Then blades - 60' vertical + 36' horiz = 100' more - $2700 -> $8k total structure. $3k gen. $2k power electronics. $2k BOS. $15k cost for 16 kW
Links
Tech assessment. Is the VAWT a feasible candidate for wind power? Low cost due to ground mounting are a potential advantage
Sourcing
- 50 kW brushless generator head, 1800 rpm - $2.2k [6]
Industry Standards
- Aeolos - up to 10 kW size - [7]. Price?
- ANew S1 - 16kW - $65k kit plus structure (total about $100k) - [8]
Alternative Design: VAWT as Water Lifting Device
To overcome the intermittency of wind, an alternative VAWT design may be a water lifting device (see example). The water released from the reservoir can then power an electric generator whenever needed. Other mechanical power inputs can also be used to add water to the same reservoir. The reservoir has obvious dual uses, such as for gravity-fed irrigation or possibly even in aquaculture.