Pregled bibliografske jedinice broj: 126994
Wind Frames in Croatia? Yes, but what kind?
Wind Frames in Croatia? Yes, but what kind? // Zbornik radova Međunarodni kongres ENERGIJA I OKOLIŠ 2002 XVIII znanstveni skup o energiji i zaštiti okoliša / Franković, Bernard (ur.).
Rijeka: Hrvatski savez za sunčevu energiju, 2002. str. 163-170 (predavanje, međunarodna recenzija, cjeloviti rad (in extenso), znanstveni)
CROSBI ID: 126994 Za ispravke kontaktirajte CROSBI podršku putem web obrasca
Naslov
Wind Frames in Croatia? Yes, but what kind?
Autori
Hudec, Mladen ; Tor, Krešimir ; Jaguljnjak-Lazarević, Antonia
Vrsta, podvrsta i kategorija rada
Radovi u zbornicima skupova, cjeloviti rad (in extenso), znanstveni
Izvornik
Zbornik radova Međunarodni kongres ENERGIJA I OKOLIŠ 2002 XVIII znanstveni skup o energiji i zaštiti okoliša
/ Franković, Bernard - Rijeka : Hrvatski savez za sunčevu energiju, 2002, 163-170
Skup
Međunarodni kongres ENERGIJA I OKOLIŠ XVIII znanstveni skup o energiji i zaštiti okoliša
Mjesto i datum
Opatija, Hrvatska, 23.09.2002. - 25.09.2002
Vrsta sudjelovanja
Predavanje
Vrsta recenzije
Međunarodna recenzija
Ključne riječi
VAWT; vetical axis wind turbines
Sažetak
Some attempts to establish the wind turbines in extreme conditions in the coastal area close to Velebit finished in debacle. Probably that is the reason why the authors of the study "Designs of wind frames in Croatia" avoided this area and chose the nearest location on the island Pag. The wind in this area called "bura" (borra) ia a gale-force wind the with highest energy concentration, and lasts for a great number of hours with gusts of over 100 km/h, i. e. velocities when all conventional turbines are unable to function. It is curious that our Faust Vrančić (1615) in "Machine novae" proposed six types of wind turbines with vertical axis and none with a horizontal one. Obviously, he knew the "bura" and its capacity for sudden change of velocity and wind direction well. The theory states that turbines based on drag have a low efficiency in relation to turbines based on lift effects, but they have low cost, very simple design due to lack of a movable part on the rotor, and no transmissions. In the paper we analyze the properties of turbines with vertical axes. One, H-type (only 40 kW) operates in extreme meteorological conditions in Africa. Such turbines are not sensitive to changes of wind direction, and have a high "survive velocities". Some theoretical research has demonstrated that it makes sense to continue to study these kinds of turbines for extreme meteorological conditions.
Izvorni jezik
Engleski
Znanstvena područja
Rudarstvo, nafta i geološko inženjerstvo
