SOLAR SERDAR – WIND TURBINE

SOLAR SERDAR – WIND TURBINE
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Green Energy Pioneers | Made in Germany by deutschewelle

In most locations, GENTLE winds (5-15 mph) are the most common, and strong winds are much more rare. As you’ll see by examining our latest machines, our philosophy about designing wind turbines is to make large, sturdy machines that produce good power in low wind speeds, and are able to survive high wind events while still producing maximum power. The power available in the wind goes up by a factor of 8 as the windspeed doubles.
Other critical factors are rotor size and tower height. The power a wind turbine can harvest goes up by at least a factor of 4 as you double the rotor size. And making a tower higher gets you above turbulence for better performance and substially increased power output. Putting a wind turbine on a short tower is like mounting solar panels in the shade!
Wind turbines are used to generate electricity from the kinetic power of the wind. Historical they were more frequently used as a mechanical device to turn machinery. There are two main kinds of wind generators, those with a vertical axis, and those with a horizontal axis. Wind turbines can be used to generate large amounts of electricity in wind farms both onshore and offshore.
How much electricity is produced?
The newer turbines expanded the capacity of the Buffalo Mountain site to 29 megawatts of generation, or enough to power about 3,780 homes. They are about 260 feet tall, and the blades are 135 feet long. They have a capacity of 1.8 megawatts each. The three original turbines, with a capacity of 660 kilowatts each, are 213 feet tall, and their blades are 75 feet long. Generally, the higher the tower, the better the access to the wind.

How is wind energy generated?
A turbine and switchgear are mounted at the top of each tower in a casing called a nacelle, and blades are attached to the turbine. The turbines use moving air to produce power by transferring the wind’s momentum to the rotor blades and localizing that energy in a single rotating shaft. The larger turbines rotate at about 15 revolutions per minute. Transformers in the nacelles step up the power to 35 kilovolts (kV), and it’s stepped up again to 161 kV at the substation located on the mountain. The substation connects to an existing TVA transmission line. The three smaller turbines are connected to the TVA system through a partnership arrangement with Clinton Utilities Board.

Do wind turbines produce electricity all the time?
Energy is generated when the wind speed reaches about 10 miles per hour, and a speed of 25 miles per hour allows the turbines to generate at their rated capacity. They shut down when the wind exceeds 55 miles per hour. Although wind speed varies according to the time of day, season, height above ground, and terrain, the proper placement of a wind turbine in a breezy location away from large obstructions enhances its performance.

Are the wind turbines noisy?
Large modern turbines are very quiet. At distances of more than 650 feet, the swishing sound of the rotor blades is usually masked completely by wind noise in the leaves of trees or shrubs. The turbine sites will be distant enough from neighbors so that people won’t hear any sound at all unless they’re standing close to the towers.

Will the turbines interfere with radio and TV signals?
No. In fact, some turbines even double as communications towers — for cellular phone transmitters, among other things. The turbine blades are made not of metal but of glass-reinforced epoxy (a material similar to fiberglass), and the turbines are equipped with asynchronous (brushless) generators that don’t create any electrical disturbance. For these reasons the turbines that will be used in the green power program will cause no electromagnetic interference and won’t disrupt radio or television signals.
SOLAR SERDAR
solarserdar@gmail.com

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About CROATIAN CENTER of RENEWABLE ENERGY SOURCES

CROATIAN CENTER of RENEWABLE ENERGY SOURCES (CCRES)• was founded in 1988 as the non-profit European Association for Renewable Energy that conducts its work independently of political parties, institutions, commercial enterprises and interest groups, • is dedicated to the cause of completely substituting for nuclear and fossil energy through renewable energy, • regards solar energy supply as essential to preserve the natural resources and a prerequisite for a sustainable economy,• acts to change conventional political priorities and common infrastructures in favor of renewable energy, from the local to the international level, • brings together expertise from the fields of politics, economy, science, and culture to promote the entry of solar energy, • provides the opportunity to play a part in the sociocultural movement for renewable energy by joining the association for everyone, • considers full renewable energy supply a momentous and visionary goal - the challenge of the century to humanity. Zeljko Serdar Head of CCRES association solarserdar@gmail.com
This entry was posted in ALTERNATIVE, ALTERNATIVE ENERGY, CCRES, CROATIAN CENTER of RENEWABLE ENERGY SOURCES, GREEN ENERGY, HCOIE, HRVATSKI CENTAR OBNOVLJIVIH IZVORA ENERGIJE, PASSIVE ENERGY, RENEWABLE ENERGY, RENEWABLE ENERGY CENTER SOLAR SERDAR, SOLAR SERDAR and tagged , , , , , , , , , , , , , , , , . Bookmark the permalink.

One Response to SOLAR SERDAR – WIND TURBINE

  1. solarserdar says:

    Solarni vakumski kolektor s vakumskim cijevima najnovije tehnologije omogućuje grijanje vode čak i tijekom zimskih mjeseci ili po potpuno oblačnom vremenu te predstavlja odličan izbor za grijanje tople vode u pasivnim kućama. Visoki vakum u vakumskim cijevima solarnog vakumskog kolektora čini solarni vakumski kolektor višestruko učinkovitijim od klasičnog kolektora. Konstrukcija solarnog vakumskog kolektora predstavlja najnoviju tehnologiju izrade vakumskih cijevi promjera 100mm i suhog spoja unutar kolektora. Solarni vakumski kolektor svojim učinkom nadmašuju sve ostale tipove kolektora čak i zimi. Najnovija 4. generacija solarnog vakumskog kolektora maksimalno je učinkovita tijekom cijele godine, ne samo tijekom ljetnih mjeseci.

    Korištenjem tehnologije suhe grijačeg spoja unutar vakumske cijevi, solarni vakumski kolektor osigurava nam korištenje zagrijane tople vode čak i zimi, po oblačnim danima kad su drugi solarni kolektori neupotrebljivi.

    Srce svakog solarnog vakumskog kolektora je staklena vakumska cijev. U njoj je namješteno pet osnovnih dijelova kojima je zadaća da absorbiraju solarno zračenje i pretvaraju ga u toplinu.Više na solarserdar@gmail.com.

    Kondezator
    Na vrhu Heta Pipe cijevi nalazi se kondezator koji se suhim spojem spaja s toplinskim kolektorom
    Heat Pipe (toplinska cijev)
    Heat Pipe je cijev koja se prostire po cijeloj duljini absorbera. To je toplinski element s visokim stupnjem toplinske vodljivosti 4000 – 8000 više od srebra, kovine koja najbolje prenosi toplinu. Toplina se iz absorbera prenosi na Heat Pipe u kojem se nalazi specijalan medij koji ima svojstvo da se može konstantno pretvarati iz plinovitog u tekuće stanje i obratno čak i pri nižim temperaturama. Kad se medij zagrije visoka temperatura putuje gore prema kondezatoru koji zagrijava vodu u toplinskom kolektoru, koji se nalazi na vrhu kolektora i u kojem su uronjene Heat Pipe cijevi.
    Absorber
    Izraden je iz čistog aluminija visoke kvalitete. Namijenjen je upijanju i prijenosu sunčeve energije. Apsorber je tretiran aluminij-nitridnim selektivnim premazom kako bi se postigla najviša učinkovitost prijenosa topline. Premaz se nanosi pomoću magnetske tehnike raspršivanja. Ovaj posebni optički premaz transformira više od 92% dolaznog zračenje u toplinu.
    Staklena cijev
    Izrađena je iz borosilikatnog stakla koji ima veliku otpornost na udarce i tuču. Niska količina željeza omogućava visoki postotak prolaska sunčevog zračenja kroz staklo.
    Visoki vakum
    Da bi se smanjio gubitak topline konvekcijom, staklene cijevi su evakuirane u vakuumu pod pritiskom <10-5 mbar. Solarni vakumski kolektori 4. generacije koriste patentiranu tehniku korištenja visoke temperature i pritiska da se osigura nepropustan spoj stakla na metal vakuumske brtve. Kako bi zadržali stabilnost vakuuma za dugi period koristi se barijev tzv. "živi oganj". Evakuiranjem zraka iz staklene cijevi apsorbera sav materijal i selektivni premaz su zaštićeni od korozije i drugih utjecaja okoline.

    Apsorber i Heat Pipe cijevi su instalirani u visoko stabilnu borosilikatnu vakuumsku staklenu cijev. To spriječava oštećenje i gubitak topline koji se javlja u konvencionalnim solarnim kolektorima.Više na solarserdar@gmail.com.

    Kako bi se osigurala visoka učinkovitost apsorpcije, a pogotovo za oblačnih dana. Absorber je tretiran aluminij-nitridnim selektivnim premazom.
    Solarni vakumski kolektori absorbiraju veliki dio sunčeve energije pri niskom intezitetu svjetlosti, npr. Kod 200Wm2 kolektori ce lako osigurati 58% učinkovitosti i podignuti temperaturu medija preko 20°C iznad vanjske temperature.

    Solarni vakumski kolektori odlikuju se dugotrajnim zadržavanjem topline. Solarni vakumski kolektori imaju cijevi koje su visokovakumirane te sprjecavaju gubitak topline iz cijevi. Emisijski gubici su minimalni. Vakumske cijevi su opremljene toplinskom diodom koja potpuno sprjecava povratak topline iz toplinskog kolektora nazad prema absorberu.

    SOLAR SERDAR
    CENTAR ALTERNATIVNIH IZVORA ENERGIJE
    solarserdar@gmail.com

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