Ægidius Elling

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Aegidius Elling nel 1900

Jens William Ægidius Elling (Oslo, 26 luglio 1861 – 27 maggio 1949) è stato un inventore, ingegnere e progettista norvegese, inventore e pioniere della turbina a gas; ha costruito una turbina a gas, la prima in grado di autoalimentarsi per produrre più energia del necessario per far funzionare i propri componenti[1][2].

Biografia

Turbina a gas di Elling del 1903

Elling è nato e cresciuto a Oslo, ha studiato ingegneria meccanica al Kristiania Technical College (ora parte del Oslo of Akershus University College of Applied Sciences), laureandosi nel 1881. Tra il 1885 e il 1902, ha lavorato come ingegnere e progettista in numerosi workshops in Svezia e Norvegia.

Nel 1884 depositò il suo primo brevetto per la turbina a gas. Nel 1903 completò la prima turbina che produceva potenza in eccesso oltre quella necessaria per autoalimentarsi; la sua creazione utilizzava sia compressori rotativi che turbine per producendo 11 CV di potenza.[3] Nel 1912 sviluppò un sistema di turbina a gas con la turbina e compressore separati che lavoravano in serie, combinazione che al giorno d'oggi è assai comune.[4]

Una delle maggiori sfide era trovare materiali in grado di resistere alle alte temperature sviluppate nella turbina per raggiungere elevati picchi di potenza. La turbina progettata nel 1903 poteva resistere a temperature fino a 400 °C. Elling capì che se fossero stati trovati materiali migliori, la turbina a gas sarebbe stata una fonte di energia ideale per gli aeroplani. Molti anni dopo Sir Frank Whittle, basandosi sui primi lavori di Elling, riuscì a costruire il primo motore a turbina a gas per un aereo, il motore a reazione. I prototipi di turbina a gas di Ellings del 1903 e del 1912 sono esposti al Museo Norsk Teknisk di Oslo.

Nel 1914 Elling pubblicò un libro intitolato Billig opvarmning: veiledning i at behandle magasinovner økonomisk og letvint.

Note

  1. ^ https://www.snl.no/.nbl_biografi/%C3%86gidius_Elling/utdypning
  2. ^ https://doi.org/10.1115%2FGT2004-53211
  3. ^ (EN) Inventions, su ThoughtCo. URL consultato il 26 novembre 2019.
  4. ^ turbomachine.com, http://www.turbomachine.com/history/. URL consultato il 26 novembre 2019.

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