1. BASICS OF WINDMILL

(a). Wind to energy! ! ! 

(b). Why we need wind energy?

(c).  what is  windmill?

(d).  Part of a windmill.

(e).  function of parts of a windmill.  

2. DEFERENCE OF WINDMILL WITH OTHER ENERGY                               

(f).  Deference with electrical energy.

(g).  Deference with Generator energy.

(h).  Deference with Solar energy.

(i).  Advantage of windmill.

3. FACTOR FOR WINDMILL

(j)   Size factor of windmill.

(k).  Wind speed factor.

(l).  Availability factor.

(m). Capacity factor.

(n)  Power factor.

4. YOUR OWN WINDMILL !!!

(o). Build your own wind power plant !!!                                                                            (p). Understand what is "Watt" and your "consumption of Watts"                                         (q).  How many windmill needed for megawatt.                                                                       (r). How many homes can one megawatt of wind energy supply?

5. Price of windmill

(s). Price of windmill.                                                                              (t ). Feature of  350 watts windmill.

6. Business Deal

                                     1. BASICS OF WINDMILL

(a). wind to energy ! ! !
Naturally wind energy is a converted form of solar energy. The sun's radiation heats different parts of the earth at different rates during the day and night between also water and land. As a result- air rises up, decrease atmospheric pressure at the earth's surface, and cooler air is drawn in to replace it and wind blows.

Air has mass. So motional air has "kinetic energy" (= mass X speed) which can be converted into  mechanical force or other energy.

(b). Why we need wind energy ?

1. It is free which come from nature. [See- (a)]                                                    2. No fuel (gas, oil, coal ) is needed. [See- (g)]                                                     3. No Co2 and other harmful gas is produced. [See -(g)]                                       4. Rate of per KW/h is less than electrical and generator energy. [see- (f/g)]           5. Price of wind and solar energy is almost same but windmill can produce energy at night and cloudy day. [see- (i)]                                                                           6. Price of electricity of windmill is more cost effective than Generator/ Solar system. [see- (i)]                                                                                                           7. On other hand, beautiful construction attract people/visitor. [see picture-3]         8. Useful for homes, businesses, many many use and also electricity can be sale to other.

(c). What is windmill ?

A windmill system transforms the kinetic energy of the wind into mechanical energy (rotational/ momentum) by its angular blade or rotor.

The mechanical energy then transforms to electrical energy by generator.

As for example, a small windmill (5 ft diameter) at low air speed( 10 km/h) and at normal air speed ( 20 km/h) can produce respectively 35-60 watts and 160-240 watts [see (j)].

(d). Part of a windmill.

(1) A tower on which total windmill system stands;                                                                                       (2) A special angle changeable rotor or blades for wind's energy to rotational shaft energy;                            (3) A nacelle (With motor for change angel of rotor)  including a gearbox and a generator ;                        (4) A gearbox makes high speed rotational moment for generator ;                                                            (5) A generator convert rotational energy to electricity ;                                                                              (6) Some unit has  Energy storage (battery) system with Inverter (UPS/ IPS).                                            (7) A Inverter (not always needed) make storage DC volt to AC 220 V/ 110 V and 50/60 Hz.                          (8) Electronic equipment such as control panel, sensor and controller, electrical cables for power       distribution, safety device is needed ;                                                                                                          (9) Long Tail with anemometer to follow wind direction and measure wind speed.                                         (10) Turbine Breaker system are also some times needed.

(e). Function of parts of a windmill.

(1) Tower:

Towers are made from "tubular steel" or "steel lattice" on a bass (made by concrete). Taller towers are more effective because wind speed increases with height.

(2) Rotor or Blade :

The blades and the hub together are called the "rotor" which is very light but strong. It is made by "fiber and light materials fabrication" by fiberglass, reinforced polyester or wood-epoxy.

Most turbines have two, three or more blades. Wind blowing over the blades causes the blades rotational shift.

(3) Nacelle:

Our design has A "specialty at its nacelle". Inside the nacelle there is a motor with small gear. The motor "changes angel of rotor" by pulling the rotor connected by steel wire.

This special advantage gives "stable speed of generator". A "anemometer" senses air speed and a "Electronic circuit" control angel of the Blades. So rotor speed is stabled at  low or high speed.

The main advantage is, at stormy wind  the rotor or blade will be at 0 degree with wind direction and hopefully keep the rotor damaging from high speed wind or storm.

(4) Gear box:

Gears connect the "low-speed shaft (of windmill) to the high-speed shaft (of generator)". It increase the rotational speeds from about "30-60 rotations per minute (rpm) to about 1000-1800 rpm" to produce electricity.

The gear box is heavy part of the wind turbine. Some times "direct-drive generators" (operates at lower rotational speeds) are used to avoid gear boxes.                               

By our technology, we can control speed of rotation by changing the angle of Rotor or blade. So we can get "stable (Regulated) electricity (voltage)". 

(5) Generator:

"Shelf-induction generator" with voltage controller (automatic) produces 220 V/ 110 V AC and 50/60-cycle (Hz) electricity.

(6) Energy storage:

Some times, "Battery" is charged from the electricity of generator directly or Indirectly. Direct charging system don't need "step down transformer".

The "charging system" is control by a electronic device ( auto charging and discharge limiter).

(7) Inverter:

The "function of inverter" (IPS / UPS) to make 220 V/110 V AC and 50/60 Cycle (Hz) from DC voltage (Battery).

Also the storage energy of battery can be used by directly. For low cost system - light, fan, TV and other home appliance is directly used from battery DC voltage. 

(8) Electrical controller:  

To make the system run Electronic equipment such as "control panel, electrical cables, safety device, power distribution unit" is needed. "Control panel" is a network between "speed sensor", "stable (Regulated) electricity (voltage)",  "charging system", "discharge limiter" and "Inverter".

(9) Tail with anemometer:

"Anemometer" measures the wind speed and transmits wind speed data to the "control panel". A big long "Tail' faces the windmill away to the wind direction.

(10) Breaker:

A disc brake for emergency stop for the rotor can which be applied mechanically, electrically, or hydraulically.

2. DEFERENCE BETWEEN WINDMILL AND OTHER ENERGY              

(f). Deference with electrical energy.

99% electric energy in the world mainly produced by gas, water turbine and nuclear reactor. Nuclear reactor system is very harmful for our environment.   Radiation comes to nature as they use radio active materials. Wind energy is free which come from nature. Price of electricity of windmill is more cost effective than other electricity system. We will discuses vastly in future about this in this web site. Please wait.

(g). Deference with Generator energy.

60% of electric energy in the world mainly produced by gas. Using fuel (gas, oil, coal ) Co2 and other harmful gas is produced. Rate of per KW/h is less than fuel generator energy.

Price of electricity of windmill is more cost effective than fuel Generator system.

We will discuses vastly in future in this web site. Please wait.

(h). Deference with Solar energy.

More than 1% of of electric energy in some country (Germany) produced by Solar system.

Price of wind and solar energy is almost same but windmill can produce energy at night and cloudy day. Sometimes price of windmill system  is chipper than solar energy system and also cost effective than Solar system.  

We will discuses vastly in future in this web site. Please wait.

           (i). Advantage of wind mill.

Small plant in distance/isolated please is very useful for homes, businesses, many use and also electricity can be sale to other.

It is free which come from nature. No fuel is needed. No Co2 and other harmful gas is produced. Windmill can produce energy 24 hour - at night and even cloudy day.

Price of electricity of windmill is more cost effective than Generator/ Solar system. The wind farm generates electricity near agricultural place continues undisturbed.

On other hand, attractive construction of windmill attract people/visitor.

We will discuses vastly in future in this web site. Please wait.

                         3. FACTOR FOR WINDMILL

( j)  Size factor of windmill.

The output of a wind turbine depends on the turbine's size and the wind's speed.

Small wind turbines  for residential or small business have rotor diameters of 8 meters or less and would be mounted on towers of 40 meters in height or less. Some bigger "Windmill Plant" has 50 meters to about 90 meters rotor with towers of 135 meters to 442 feet.

(k). Wind speed factor

Energy increase exponentially with wind speed. The power available in the wind is proportional to the cube of its speed, which means that "doubling" the wind speed increases the available power by a "factor of 8 (eight)".

Thus, a turbine operating at wind speed of 12-mph could generate about 33% more electricity than 11-mph wind speed.                                                                                                     Example: In a 10 mph wind (very common), a 5 foot turbine has (60-100 Watts available) finally 35 watts of output.  By comparison, a 10 foot turbine has (400 Watts available) finally 160-240 Watt, 20-foot turbine could possibly give 740W.

When the wind speed is double(20 mph), the exponential increase in power. A 5 foot turbine finally gives 160-240 watts of output, a 10 foot turbine finally gives 1200Watt, 20-foot turbine possibly give 5,900W.

(l). Available factor

Availability factor is a measurement of the reliability of a wind turbine. It refers to the percentage of time that a plant  "works perfectly" (that is, not out of service for maintenance or repairs). Modern wind turbines have an availability of more than 98%.

(m). Capacity factor

Capacity factor is one element in measuring the productivity of a wind turbine. It compares the plant's actual production over a given period of time with the amount of power the plant would have produced.

                                 Actual amount of power produced over time                      Capacity Factor =   Maximum Power output a system over time

A capacity factor of 40% to 80% means a "good plant". A capacity factor of 25% to 40% is common, although they may achieve higher capacity factors during windy weeks or months.

(n). Power factor.

We will discuses vastly in future in this web site. Please wait.

                             4. YOUR OWN WINDMILL !!!

(o). Build your own wind power plant !!!

Some good economical country provides money from Govt. So try to build your own wind plant.

Wind "plants" are "modular", which means they consist of many of small individual windmill modules and can easily be made more larger.

The most economical application of wind Plant is in groups of large machines (1000 kW and up), called "wind power plants" or "wind farms." 

Wind plants can range in size from a few megawatts to hundreds of megawatts in capacity.

(p). Understand what is "Watt" and your "Watts consumption"

The ability to generate electricity is measured in "watts". Watts are very small units. Other terms are kilowatt (kW, 1,000 watts), megawatt (MW, 1 million watts).

Electricity production and consumption are commonly measured in kilowatt-hours (kWh). A kilowatt-hour means one kilowatt (1,000 watts) of electricity produced or consumed for one hour. One 50-watt light bulb left on for 20 hours consumes one kilowatt-hour of electricity (50 watts x 20 hours = 1,000 watt-hours = 1 kilowatt-hour).

Example: A 10-kW wind turbine can generate 240-KW each day and about 87,600 kWh yearly at  wind speeds averaging 12 miles per hour.

(q). How many windmill needed for megawatt.

Most manufacturers offer 100-kW to 1MW range windmill. Ten 100-kW units would make a 1-MW wind plant. In the future, machines of larger size will be available.

(r). How many homes can one megawatt of wind energy supply?

An average U.S. household uses about 887 kilowatt-hours each month that means 10,655 kilowatt-hours (kWh) each year of electricity. One megawatt of wind energy can generate from 2.4 to more than 3 million kWh annually. Therefore, a megawatt of wind generates about as much electricity as 225 to 300 households use.  If the consumption become 290 kilowatt-hours each month then a megawatt of wind generates can provide 1000 households use.

5. Price of windmill

(S). Price of windmill

New price will be available soon in this web site. Please wait.

Old price:

2.5 KW System:-   Mechanical Power Turbine-5 525.00 $,  Alternator/Generator-2 250.00 $,  Inverter-2 250.00 $,  Controller-5 525.00 $ , 12V/300A  Batteries-5 525.00 $   Installation Hardware-8 920.00 $.Total Amount - 31 513.00- 32 013.00 $ 

5 KW system:- Mechanical Power Turbine-12 488.00 $, Alternator/Generator-8 920.00 $,  Inverter-8 920.00 $,  Controller-8 920.00 $,   Batteries- 8 920.00 $, Installation Hardware-8 920.00 $.Total Amount - 31 513.00- 32 013.00 $ 

10 KW system:-  Mechanical Power Turbine-12 488.00 $ , Alternator/Generator-3 980.00 $,  Inverter-4 750.00 $,  Controller-1 935.00 $, 40 6V/240A Batteries- 6 360.00 $, Installation Hardware-2 000.00-2 500.00 $, Total Amount - 31 513.00- 32 013.00 $ 

15 KW system:-  Mechanical Power Turbine-16 859.00 $, Alternator/Generator-5 350.00 $,  Inverter-9 500.00 $,  Controller-2 650.00 $, 60 6V/240A Deep Cycle Batteries - 9 540.00 $, Installation Hardware-2 000.00-3 000.00 $, Total Amount-5 899.00-46 899.00 $ 

20 KW system:-  Mechanical Power Turbine-16 859.00 $, Alternator/Generator-5 350.00 $,  Inverter-9 500.00 $,  Controller-2 650.00 $, 60 6V/240A Deep Cycle Batteries - 9 540.00 $, Installation Hardware-2 000.00-3 000.00 $, Total Amount-5 899.00-46 899.00 $ 

(t). Feature of  350 Watts windmill

Four-bladed glass fiber windmill high efficiency. The speed regulating system adjusts automatically to wind speed. The whole system is easy to install and convenient to maintain. Controller, inverting added to make 110v/220v.

For daily life it can give power to 12VDC for lighting, TV, record players, driers, etc.

This is portable so suitable to carry and install in pastoral, mountainous and insular areas as well as fishing-boats, railway depots, border sentry post, etc. 

Main technical data :-Rotor blade diameter- 2.5m, Numbers of blade- 4 ,Start up wind speed- 10 mph. For rated output power- 350W, wind speed needed- 10 mph. Height: 5m. Weight: 40kg. The product is portable. Other parts are- generator machine head , external appearance, Control System