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types of wind turbine
2009-08-28 13:10:00 A wind turbine is an apparatus used for generating kinetic energy through the collection of mechanical energy that comes from the wind. Ahorizontal axis wind turbine (HAWT) is a structure that stands straight up into the wind as the means for collecting the mechanical energy. This collection of
hovering wind turbine
2009-08-24 21:18:00 An Inventor's Frustration When I was 6 years old [1944 ] I "invented" the steam engine, and later - many already existing farming equipment. At the age of 40 I invented a free piston engine, and my idea was better [according to an engineer who w
Wind Turbine
2009-08-08 14:55:00 I have planned to design a rooftop windmill for my home. i have all the calculation except the blade design calculations. please guide me to design the blade.
Inside a Small Wind-Turbine Beta Test
2009-07-22 14:59:00 From CNET News.com: WindTronics is one of many small wind companies trying to crack into clean energy industry. Can it make wind affordable and revitalize manufacturing at the same time? Last month, I took a detour from a summer road trip to visit WindTronics and see a prototype
Help in wind turbine
2009-07-18 12:36:00 Hi frnds i m doing project on the wind turbine to power my house. I have formulas for designing each part except the blades.I want to charge 6v battery frm it.I m having 9v dc Generator.Wind speed is 8 to 10mph.I will use two batteries for input to my 12 invertor.So that 1>what is the formula fo
Tip Speed Ratio of Wind Turbine Blades
2009-07-03 10:32:00 is there any method or formula for calculating tip speed ratio of wind turbine prop.there r three blades which r at 120 degree to each other it is made up of PVC pipe the average wind speed is 10-9 mph.Length of one blade is 0.5m
DESIGN OF BLADE OF WIND TURBINE
2009-06-25 14:17:00 HI friends is there any buddy help me to make wind turbine in less cost.I have planned to construct 10 to 12 wind turbine in my area (colony) to over come power cut.i will going to keep one proposal in front of my society committee.So if there is any one who can help me plz give ans.thanks
sales tax (of wind turbine) in Bulgaria
2009-06-24 10:55:00 Hi there, I'm not sure if there is sales tax of wind turbines in different places of Bulgaria, but I really want to know. I try every means to get the relative website where I can search for it easily, but I got nothing, leaving myself quite exhauted. Alas! Is there anybody who can
Wind Turbine Sale Tax
2009-06-24 10:55:00 Hi there, I'm not sure if there is sales tax of wind turbines in different places of Bulgaria, but I really want to know. I try every means to get the relative website where I can search for it easily, but I got nothing, leaving myself quite exhauted. Alas! Is there any
Surface Treatments for Wind Turbine Mountings
2009-06-05 06:04:00 OK guys, I don't want to mount my all of 1 kW wind turbine on galvanized angle iron served up plain. Cost-effective, but way too reminiscent of olde tyme wind mills. Yes, white paint is an option. So is re-painting it every other year or so. I'm looking for ideas -- electroplate maybe? -- on ho
wind turbine
2009-05-17 09:58:00 hi I need to a software or a algorithm for design a mini wind turbine. please help me(mail me) best regards memar@momtazan.com
on-grid wind turbine connection to the grid in USA
2009-05-07 09:03:00 Hello, folks, As there are different 3 phases grid in the USA, I want to know how to connect the wind turbines with the phases? should we choose 3 wires or 4 wires? and which voltage and grid system should be chosen? It is top urgent! Appreciate your earliest reply! Thank y
wind turbine installation in SA
2009-04-16 10:20:00 Hi All, We have been selling our small wind turbines (from 300W to 20KW)to SA markets for one year. Now that we met such a problem about the local grid power and frequency when collect our systems into the local grid, I have an idea that I want to collect all the tips on selling and instal
wind turbine regulators
2009-04-16 01:07:00 I contacted SouthWest Wind Products with a technical question about regulators. Solar Panel systems are using a regulator design called MPPT which is a smart switch mode unit that constantly adjust for varying sunlight hitting a fixed panel. I asked if such a controller could be adapted to a wi
New System Detects Stress on Wind Turbine Blades & Adjusts to Increase
2009-04-03 16:56:00 From TreeHugger: As wind turbines get larger and larger (a 5 MW turbine has a blade about 180' long, which at its height is over 400' off the ground) the different types wind stress on the turbine can be of such a nature that components can wear out early, causing early breakdown o
Wind Turbine Blades
2009-03-27 21:51:00 I am about to prototype a new design of turbine blades. My idea is to have 2 or 3 aerofoil shape blades with a constant chord dim from root to tip. The root of the blade would be fixed to the hub in a way that allows it to change pitch. The fixing pin on the blade would be offset from the centr
Wind Turbine Mast Design
2009-03-21 23:09:00 I am trying to make a tall mast as light as possible to support a wind turbine. Hypothetically ; If I were to use a steel tube say about 100mm dia and around 10 metres tall with a disc of around 1 metre dia welded halfway along its length. There would be 4 steel ropes attached to the top end
Most effiecient and accurate method to evaluate wind turbine design.
2009-03-08 21:23:00 How would I go about finding a CAD program that could evaluate a mini-wind turbine design for energy output potential. Or is there a better way to approach this problem?
Volts Amps Low rpm wind turbine alternator
2009-02-22 05:11:00 In making a low rpm "Disk break Low rpm alternator" could I when making the coils that will be 3 phase, use will say 16 gage wire to carry the amp's and say 20 gage wire to carry the voltage.I want to have the cut in speed at about 30 rpm and that will be around 200 windings. for the 9 coils,in sets
calculations and equations for a savonius wind turbine
2009-02-15 20:42:00 Does anyone know the calculations or equations to find the torque output for a two-stepped savonius wind turbine?
High Torque Vertical axis wind turbine
2009-02-14 20:28:00 Im looking to find a design for a vertical axis wind turbine that will yeild a torque of about 1/16-1/8 horsepower to run a vacuum pump. The turbine can not be too big. any suggestions?
Vertical Wind Turbine Could Be Successful
2009-02-04 05:18:00 Imagine spending your life savings on an invention you are sure will someday be successful, even if skeptics think it is impossible. It's pretty risky right? Well Adam Fuller from Racine, Wisconsin has done this very thing. He has spent his life savings designing an invention he believes in, a vertical wind turbine. Will it work?
Oh, You Are So GREEN! The HYmini Handheld Wind Turbine
2009-02-02 18:20:00 A handheld wind turbine might be the last thing you would think of to charge your MP3, cell phone, or digital camera. How about a handheld wind turbine with mini solar panels too?
Wind Turbine Blades Covered With Photovoltaic Cells?
2009-01-26 13:36:00 Who makes a vertical wind turbine which has all its blades covered with photo voltaic cells? Some time ago I saw an article about this turbine and have been looking for the manufacturer ever since.
Aliens destroy wind turbine.
2009-01-16 04:13:00 Guess the title is self-explanatory. Looks like the free energy believing, conspiracy theory spouting nutcases got it all wrong. It's not any human agency that's responsible for suppressing information of alien visitation on Earth or free energy or even alternative energy, it's the aliens themselves
Selecting a Wind Turbine
2009-01-05 15:58:00 Hello, I intend to buy the generator (12v,500W) of hobby wind turbin for my hobby at home. I will make the impeller by myself. I appreciation if someone can help to point out shop or website Best Regards DBT
Battery Charging by Wind Turbine
2008-12-19 09:06:00 Dear All, Any body suggest me, what are the arrangement and how I can make wind turbine which charges 24v, 98ah battery for inverter purpose. speed control of turbine/regulation of charging etc...
Wind Turbine Experiences
2008-12-02 19:53:00 I am looking for some first person experience with large wind turbines. As I mentioned in other threads there is a large project proposed for my area. They are considering a set-back from residential buildings of 400 meters. I've read so much "for" and "against" information that I was hopi
Wind turbine generator
2008-11-21 05:57:00 Dear all, Please anybody have a great experience in a wind turbine generator? due to the present situation with my natural gas generator power provider compounded with a very high operation cost in diesel generator, I am looking at feasibility of introducing the wind turbine generator, and I
small wind turbine
2008-10-28 13:55:00 is possible to install wind turbine at terrace or any company for trade this type or wind turbine or solar cell
Energy Ball - A Cheap And Efficient Wind Turbine
2008-09-22 18:22:00 From Delicious hotlist: As our dependence on fossil fuels will be reduced, we will need new ways of harnessing renewable energies. Actually, there are lots of ways to get energy - wind, solar, wave and tidal will replace oil in the future. The problem is that we have to find effici
Wind Turbine Blades
2008-09-21 22:13:00 What configuration and design of blades on a wind turbine gives the most torque at low speeds. I know that 3 aerofoil shape blades are typically used on wind turbines that require high speed. I am not neccessarily looking for high speed but high torque with low wind. I am driving a hydraulic pump wi
wind turbine force
2008-09-09 21:06:00 I would like to know if 2 inch scd 40 pipe will take the force.Right now I have made a vawt the rotation shaft is 2 inch steel pipe.The mast is scd 40 -4 inch pipe 18 feet above the ground.I have 2 pillow blocks mounted on the 4 inch pipe,One at the top and one 4 feet below the top. The 2 inch shaf
Wind turbine in my backyard
2008-09-09 18:30:00 I received notification of 40 wind turbines planned to be built in my area. My wife has some concerns over health issues that she has heard about. Does anyone know about issues with turbines. Other than if you are a bird......
Wind Turbine Blows Speed Racer Around The Track
2008-08-20 15:04:00 From Crave: The gadget blog: The Loopwing Wind Power Generator Set is recommended for ages 15 and older.(Credit: Tamiya America) Toys are truly a reflection of the time in which they are sold. This new car set from Tamiya has only
Siemens to open wind turbine research center in Boulder - Seattle Post Inte
2008-06-08 04:20:00 DENVER — Colorado's quest to become a renewable energy leader has received a boost from Siemens Energy's decision to locate a wind turbine research and development center near... [[ This is a content summary only. Visit my website for full links, other content, and more! ]]
By: Engineers Voice
Wind Turbine
2008-06-07 23:59:00 I am building an Axial Flux (10kw) wind turbine generator. Has anybody out there built one of these before. If so what are the pitfalls to look out for.
Sieman?s To Build R&D Wind Turbine In Colorado
2008-06-07 14:09:00 Well, well, this is very interesting news which I whole-heartedly support (Clean Tech) Siemens says it intends to collaborate with NREL on the installation of a 2.3 MW pilot wind turbine at the NWTC. Siemens Energy, the energy arm of the German industrial conglomerate Siemens AG (NYSE: SI), today announced plans to establish its first U.S. wind ...
By: Pirate's Cove
Vertical-axis wind turbine spins into business
2008-06-02 18:05:00 From Crave: The gadget blog: Mariah Power says its Windspire vertical-axis wind turbine is now commercially available, after having passed performance tests. The Windspire costs $4,995, which includes the inverter, pole, and other equipment. Typically, small-wind turbines suc
Overvoltage protection for wind turbine output
2008-05-31 23:38:00 An off the shelf grid tie in inverter that I am considering requires that I mitigate any overvoltage due to high turbine rotation in strong winds. Two methods are suggested, short-circuiting the generator to slow it down or activating a resistor assembly (dumpload) the generator in question is
Queen Elizabeth Throws Down For The World?s Largest Wind Turbine
2008-05-22 21:36:00 It’s not just Prince Charles that gets to enjoy all those cool, green toys. Queen Elizabeth has decided to invest some serious cash in the world’s largest wind turbine — a 7.5 megawatt monster. I’ve seen some 1.5mw behemoths that were gigantic, so this thing must be massive. Now, of course, we don’t imagine the Queen herself ...
By: Ecorazzi
vertical axis wind turbine built like a squirrel cage fan
2008-05-11 23:19:00 Hi i was wondering why people don't build some vawt's that look just like an open air squirrel cage fan (without housing or shroud)? i thought they were great air movers so wouldn't that mean they could be good air catchers too? what if someone built one that was like 20' diameter (across) and 40' h
Magenn gets its MARS floating wind turbine off the ground
2008-05-05 23:37:00 From Engadget: We've already seen some wind turbines designed to float offshore, but Canadian startup Magenn Power has some ideas of its own for getting wind power off the ground and, judging by its latest tests, it seems to be making some considerable progress. Its solution, dubbe
Improve Your Home With A Residential Wind Turbine
2008-04-16 08:01:00 by Rick Chapo What if I said you could cut your electric bill by 50 to 90 percent? Well, you can by installing a small, residential wind turbine on your property. Improve Your Home With A Residential Wind Turbine When you combine the cost of fossil fuels with the pollution and climate problems they create, it can all get a bit overwhelming. It is easy to find oneself wondering where to start
Video: Vertical Axis Wind Turbine (clock included)
2008-04-15 08:27:00 Like this post? Subscribe to our RSS feed and stay up to date. I took this short video of a new, small vertical axis turbine at Colorado State University in Fort Collins, CO. Despite the fact that it...
By: Green Options
Use the Power of Sun and Wind with a Wind Turbine
2008-04-08 15:28:00 Solar energy is energy derived from the sun. Solar energy, as well as well as other natural resources such as wind and wave power, is a readily available and renewable form of energy. This natural energy has been harvested in various ways for centuries, though only recently has technology allowed modern conveniences such as heating, lighting, electricity and flight to be solar-based. A wind turbine is a hybrid solar-wind generator that can provide power for a variety of industrial and arisolarwindicultural needs.The best available systems are quiet, durable, and have fast moving turbine blades for efficient performance. A wind-solar turbine also has a CPU-controlled generator, which provides protection against over-speed. The technology of some of these systems is comparable to that of electric cars. These systems have auto-regulating charge controls up 48 volts and wattages up to 3.5 kilowatts.Users of wind-solar turbine systems have stated that products work even at temperatures a...
Postdoc Positions in Modeling and Simulation of Wind Turbine Systems
2008-03-22 18:03:00 Denmark. Aalborg University. The positions are available within the Faculty of Engineering, Science and Medicine, Department of Energy Technology. Applicants should posses a PhD degree in Electrical Engineering and a sound background in electrical machines and power converters including control for wind turbine systems. The research potential of each applicant will be emphasized in the overall assessment. Experience in using Matlab/Simulink and Power Factory-DigSilent is also required. Appointment to Postdoc cannot exceed a period of four years in total at the same institution -appointment at Assistant Professor level cannot exceed a period of eight years in total in Denmark, however a maximum of six years at Assistant Professor level at Aalborg University. (more…) Share This Tags: aalborg university, denmark, electrical engineering, energy technology, postdoc positions
By: free scholarship
Testing a wind turbine & solar panel lamp
2008-03-21 16:44:00 I need to test an off-grid wind turbine & solar panel lamp and would appreicate some guidance on the equipment required and where to purchase. The setup consists of a wind turbine (rated 400W@15m/s), PV panel (120W), Lamp (55W), controller and 2x 12V 150Ahr batteries. I need to mea
Wind Turbine Tower Foundation
2008-03-15 09:13:00 I'm working on the sizing of the concrete foundation for a wind turbine tower. I don't have enough knowledge about aerodynamics. I need to determine the value of the total wind pressure (normal pressure exerted by the wind, in psf, for each/all blades.. maybe?), to complete the analysis. T |
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