Date of Birth: 
Place of Birth: Ambérieu-en-Bugey, Auvergne-Rhône-Alpes, France
About Georges J. Ranque
- Georges-Joseph Ranque (7 February 1898 – 15 January 1973) was the inventor of the Ranque-Hilsch vortex tube, which generates streams of hot and cold gas from a stream of compressed gas. Georges-Joseph Ranque was born in Ambérieu-en-Bugey, France in 1898.
- His father, Léon-Joseph Ranque, worked as an engineer for a railroad; his mother was Joséphine Saint Germain.
- Georges attended the St.
- Louis lycée, where he became interested in physics.
- In 1918, he was admitted to the Ecole Polytechnique in Paris, where he studied physics.
- Subsequently he did post-graduate work at the Conservatoire des Arts-et-Métiers. For six years he had been interested in the operation of the Pantone carburetor.
- This led him, in turn, to the study of vortices.
- In 1922, he was trying to develop an industrial vacuum pump for vacuuming iron filings.
- While studying the flow of air through the pump, he inserted a cone at one end of a tube in which air was flowing in the form of a vortex, and he noticed what is now called the “Ranque effect”; namely, that a stream of air could be split into two streams, one of hot air and the other of cold air.
- In 1931, he filed for a patent on his vortex tube, and in 1933, he presented a paper on it.In 1923, Ranque went to work for the Saint-Jacques steelworks in Montluçon, where he improved methods of producing steel.
- He became head of the metallurgical laboratory at Saint-Jacques, where he helped develop steels that would be used as armor in tanks and in the Maginot line. In 1926, he married Eugénie Pierre in la Chapelaude.
- The couple had six children: Marie-Josèphe, Pierre, Marie-Noëlle, Marie-Thérèse, Monique and Marie-France.During the Second World War, he developed steels and alloys that would later be used by the aviation industry.
- After the war, he accepted a position at the Aubert et Duval steelworks in les Ancizes.
- There, as director of the metallurgical laboratory, he developed alloys for aviation. In 1972, he published a book on the search for the philosopher’s stone, La Pierre philosophale.He died in 1973 in Colombes, a suburb of Paris.
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