36000 watts in a day?

[sweetwind]

i thought of taking advice from you guys, if i have to convert my office towards wind energy produced power backup (calculated value is approx 36k watt), what could be max size of turbine i have to use,

ps: i prefer using vawt in place because of the space constraints

[sweetwind]

changed the heading

[snake]

in a day means 24 hours.so if you have a turbine producing 2000W/H,then you will have 48000 watts in 24 hours

[Flux]

If you consume 36kW and say the load is on for 10 hrs a day you need to produce 360kWh.

A 100kW rated turbine may average perhaps 10kw on a typical day so if the wind blew for 24 hrs ( rare in most areas) you would be close on many days. On good days you would have plenty, on other days you would have nothing.

Anything below 20kW is not going to give you much of a saving on the average day.

Throw in the lack of space, presumably in an urban area and VAWT, save your money. If you have sun think of solar. Otherwise conserve energy as a starting point.

[Bruce S]

I agree with Flux.

One of the biggest things you'll be better doing would be to conserve first.

There's a construction company here in St. Louis (Alberici) that built their own building ( actually rehabbed an older building) and installed a "used" GE mill. Used it cost 1.2M$ puts out 65K and only provides 20% of its needs. Granted we're not in one of the better winds zones, but you get the idea.

It sure is pretty driving by it each day seeing it turning in the wind.

Where are you located? perhaps you're in a better wind area than we are.

You will find in a ton of posts on here, that conservation wins hands down and is cheap to do ;-)

Best of Luck!!

Bruce    

[DanB]

I wont get into the VAWT bit.  Everyone wants a VAWT it seems due to space, regulations, noise or some other reason...  that's why we see those VAWTS all over the place on roof tops everywhere!  (At least on the internet).

Main point in this reply is your units.

The Watt is a unit of Power.

Saying 36000 Watts in a day is sort of like saying 'what sort of engine to I need in my car so that I can have 500 horsepower in a day' (it doesnt make sense).

So I assume you mean Watt hours or KiloWattHours.  Watt hour is a unit of 'energy' or 'work'.

The max size of turbine you need depends completely on wind speed.  On a good tower, with decent wind speed of perhaps 12mph average... a 20 -25' diameter HAWT should probably do the job.  

[kurt]

unless you give proper units of measure your gonna get every answer under the sun as no one will really know what you mean and everyone will be guessing. give us how many kilowatt hours (kWh) you use in a day week month whatever should be on the electric bill.

[sweetwind]

thanks to flux,kurt,DanB,Bruce S, snake,

"

A 100kW rated turbine may average perhaps 10kw on a typical day so if the wind blew for 24 hrs ( rare in most areas) you would be close on many days. On good days you would have plenty, on other days you would have nothing.

Anything below 20kW is not going to give you much of a saving on the average day.

Throw in the lack of space, presumably in an urban area and VAWT, save your money. If you have sun think of solar. Otherwise conserve energy as a starting point.

Going towards solar is best option i have. Just thinking of spending $800(my budget) on these experiments and trying.

--

[DamonHD]

Yep, sounds like a good plan.

Accept that some of the experiments won't work, and a little of your money and effort may ultimately be 'wasted' (though only if you ignore the fun and education), but some will get further than you expect.

For example, the little solar off-grid system I set up a couple of years ago to run my office lighting, after several rounds of expansion, now also powers my main Internet server (though boy the software work I had to do was much harder than the hardware)!

http://www.earth.org.uk/solar-PV-pilot-summer-2007.html

http://www.earth.org.uk/note-on-SheevaPlug-setup.html

Rgds

Damon