The annual electrical energy demand is 300,000,000 KWh. Is it possible to build a wind farm that could provide electricity throughout the year? If so, how many wind mills will be required to build the wind farm. Average wind speed is 15 mph. A state-of-the-art windmill has a rotor blade length of 75 m and the practical efficiency of a wind mill is 40%.

A) the wind speed and the depth of the water
B) length of time the wind blew and the wind speed
C) wind speed, length of time the wind blew, and the fetch.
D) wind speed, water temperature, and the density.

Hi Everyone, I am working on a business plan which I need to submit to an investment board in Pakistan and a some other countries by December 2011. After speaking to numerous people and reading many journals I would like to know what would be the equipment specification and cost for:
1) Wind turbine for 20 small houses (only lighting, perhaps 2 bulbs and heating the gas stove) would be required.
2) Solar panels for the same need.

I understand batteries and additional equipment will be required if someone can answer these question for me I would be greatly appreciative. The first market I would like to target is rural Pakistan and the resources for both the solar and wind initiatives are as follows:

The average daily insolation amounts to approximately 5–7 kWh/m2/day. Especially
the southwestern province of Balochistan and Northeastern part of Sindh . There the sun shines between 6 to 8 h daily or approximately more than 2300–2700 h per annum. The average daily insolation of 5–7 kWh/ m2/day means daily sun energy of 18–25 MJ/m2/day is available as
input natural resource of energy to be exploited for photovoltaic power generation or solar thermal applications.

Wind speed from 5 m/s to 7 m/s persists in coastal regions of Sind and Balochistan provinces
and in a number of North-West Frontier valleys

Given this data could someone be kind enough to tell me the kind of equipment required to power a small village on 20 or so households for just lighting and heating the stove. My business plan intends to alleviate the poverty of these villagers who have been living in Darkness for centuries and to improve their environment.
Any information will be greatly appreciated.

Wind Power The electrical power generated by a
windmill varies jointly with the square of the diameter
of the area swept out by the blades and the cube of the
wind velocity. If a windmill with a 10-foot diameter
and a 16-mile-per-hour wind generates 15,392 watts,
how much power would be generated if the blades
swept out an area 12 feet in diameter and the wind
speed was 15 miles per hour?

I am not assuming that such capture is possible. I just want to know how much energy exists.

What would the answer be if the wind speed increased to 10 mph?

Please express the answers in BTU or KWH.

Although I certainly believe that renewable energy is preferable to fossil fuel burning, I've been thinking, is it not possible that these options will cause their own forms of climate change? For example, wind turbines should cause a small decrease in wind speed, and as climate is a chaotic system who knows what the end result could be due to the "butterfly effect."

Likewise, hydroelectricity should cause a change in surface heat retention (due to the fact that water retains heat longer than solid ground), whilst solar power will increase the reflective properties of the ground possibly reducing surface heat take-up.

What are your opinions on this?
Also, what options do you think we have instead? Do we have ANY?

Due to the change in the wind speed, the speed of the wind turbine rotor changes, so at the output we get variable AC supply which means we do not get exactly constant voltage and frequency.

It can be control by controlling shaft speed and at the output by varying the load (Resistance).

I need to submit a case study about that so tell me about any site or e-book where I can find comprehensive details about that.

Due to the change in the wind speed, the speed of the wind turbine rotor changes, so at the output we get variable AC supply which means we do not get exactly constant voltage and frequency.

It can be control by controlling shaft speed and at the output by varying the load (Resistance).

I need to submit a case study about that so tell me about any site or e-book where I can find comprehensive details about that.

How to estimate the energy of wind turbine?
how do i estimate the annual energy output of a 5kw wind turbine in an area which has a average wind speed of 7.4m/s at 10m above ground level, and the rated wind speed of the turbine is 10m/s. there is no buildins around to interfear with the wind and the hub of turbine is 12m above ground level also how do i find out the prevailing wind direction in my area

I am planning to go for a wind turbine of 500 watts to install for domestic use. With average wind speed of 15km/hr in my location, can anybody suggest me how much energy can be generated by this wind turbine and also which are the appliences to which this energy would sffice?

I am by no means an expert on this subject, but I do have one idea I would like to throw out there. Would it be feasible to somehow place wind turbines at the top of skyscrappers or any tall buildings far that matter? I know that doubling the altitude of turbines increases wind speed, which would increase energy out. Dosen't make sense to put a turbine on a very tall building?

Wind Energy?
"950W of power at 45km.hr winds
Delivers 100 Kw / hours a month at an average wind speed of 5.4 m/s
Adjustable voltage (12/24/36/48V)"

Can someone please tell me what that means? And my question is would you be able to indefinitely power a small fridge, a TV and other things on that wind turbine which costs 000? I'm posting this many times because I'm not satisfied with the answers I already received. People are just not making it simple enough to comprehend. Its all spanish to me.

How big must the turbine be?
What average wind speed per month must there be?
How high must the tower be?

How to estimate the energy of wind turbine?
how do i estimate the annual energy output of a 5kw wind turbine in an area which has a average wind speed of 7.4m/s at 10m above ground level, and the rated wind speed of the turbine is 10m/s. there is no buildins around to interfear with the wind and the hub of turbine is 12m above ground level. and could you show me the formula for this sum.

Wind Energy?
"950W of power at 45km.hr winds
Delivers 100 Kw / hours a month at an average wind speed of 5.4 m/s
Adjustable voltage (12/24/36/48V)"

Can someone please tell me what that means? And my question is would you be able to indefinitely power a small fridge, a TV and other things on that wind turbine which costs 000? I'm posting this many times because I'm not satisfied with the answers I already received. People are just not making it simple enough to comprehend. Its all spanish to me.