Windmill Day 2024 is on Friday, May 10, 2024: windmill

Friday, May 10, 2024 is Windmill Day 2024. National Windmill Day National Windmill Day falls on

Windmills were when a a lot more usual attribute of our landscapes; however, modern sector has actually rendered these historical wind-powered factories primarily redundant. Windmill Day motivates you to visit your local windmill, acquire associated with reconstruction tasks, and to attempt your hand as a miller!

Windmill is one of the renewable source of energy.Although many more efficient systems (Solar Energy) are present but they are limited(cant be used in cold areas and at night) but that's not the case of Windmill.

1. It can be used both in day and night.

2. It can be used well in colder areas where wind blows (Antarctica,Greenland,Germany and many places of USA)

3. It isn't as expensive as Solar Panels if established at right place.

It is useful in its category(Uses Wind to get Energy) and others in Theirs so no system can be said fully useful but still USEFUL (Non-Polluting and so on).

in a modern day windmill?

Too vague a question. the traditional "windmill" was used to grind grains into flour. Traditionally they had floor or two for accessing the upper level gears for maintenance.

Or were you refering to wind generators ?

WINDMILLS - How many watts per hour does a windmill ACTUALLY produce?

To be absolutely correct, the windmill produces no electrical energy. It's simply the driver used to turn a set of coils in a magentic field, thereby producing electric current and voltage.

The limitation on the output is dependent on a couple of things:

- the efficiency of the electrical machine (usually located inside the nacelle, behind the blades)

- the allowable variability in blade pitch (to make the most out of changing wind speeds)

- the mechanical efficiency of the gear unit (typically, the blades turn MUCH slower than the electrical machine, to try and keep the size of the machine within reasonable bounds).

- the actual 'wind speeds' in the area

- the ability of the windmill to pivot (to accomodate for changing wind direction).

Using a wind generator does not automatically mean there is a 'battery' or other energy storage system attached. In fact, most do not. This is because wind energy is used to supplement the energy generation from other sources ... which means the connection to the grid is already present.

If the blade has no provision for variable pitch, the power produced is approximately equivalent to the cube of the speed ... thus if the generator produces 3000 kW at 28 mph, it will produce 47 W at 7 mph (3000 x 7/28 x 7/28 x 7/28 = 47).

If the wind gets too high, there has to be a brake on the propellor shaft to stop rotation (to pervent damage to the internals); at very low wind speeds, the device does not generate enough energy to overcome its internal friction and other losses. This means the 'active range' is fairly narrow - something like 7 to 20 miles per hour. Using variable pitch blades can help somewhat ... but only by extending the top end to perhaps 30 mph.

As to how much the wind generator can produce per hour? Typically, the generator is rated at a given kW output. This means the generator can produce this much power indefinitely, provided the conditions are suitable to do so. In a year, it will produce that many kilowatts times the number of hours in operation (typically assumed to be about 50 percent of the time).