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GAUL [2 records]

Filter results by subject field Alphabetical list of terms

Filter results by subject field

Alphabetical list of terms

Record 1 2001-07-03

English

Subject field(s)
  • Metrology and Units of Measure
  • Tolerances and Modular Co-ordination (Construction)
  • Mine Ventilation, Heating and Lighting
OBS

Unit of measurement of the old French measurement system.

French

Domaine(s)
  • Unités de mesure et métrologie
  • Calcul, tolérances et modulation (Construction)
  • Ventilation, chauffage et éclairage des mines
DEF

Unité de mesure de résistance aéraulique.

CONT

L'unité de résistance [d'une galerie d'aérage] est le murgue [...] Le murgue est donc la résistance d'une galerie dans laquelle un débit de 1 m³/s circule sous l'effet d'une différence de charge de 10-3 kg/m² = 1 g/m².

OBS

Le murgue figurait dans l'ancien système d'unités français, pour le calcul de la perte de charge dans un élément de circuit d'aérage.

Key term(s)
  • gaul

Spanish

Save record 1

Record 2 1981-11-05

English

Subject field(s)
  • Metrology and Units of Measure
  • Mine Ventilation, Heating and Lighting
CONT

Mine roadways offer resistance to air flow due mainly by surface drag between air and roadway sides (...) Energy losses are directly proportional to the cube of the air quantity flowing. A simpler pressure difference relationship is used which is derived from basic fluid flow principles and which can be related to Atkinson's equation. In this case P = RQ [squared] where P is the frictional pressure difference across a length of roadway in pascals: R is the roadway resistance in Gauls (...); and Q the air-flow rate in [cub metre] / s. Roadway resistances are expressed in Gauls per 100 m of airway (...)

French

Domaine(s)
  • Unités de mesure et métrologie
  • Ventilation, chauffage et éclairage des mines
OBS

Selon ce qu'en dit M. Favre Bulle, directeur de la revue "Industrie minérale", le Gaul est, dans le nouveau système international, l'unité de mesure de la résistance d'une galerie d'aérage, d'après la formule h = rxq au carré, où h représente la différence de charge (en pascals); r, la résistance (en Gauls), et q le débit (en mètres cubes/seconde). L'ancien système d'unités français utilisait le "murgue", un kilomurgue valant 9,81 Gauls.

OBS

Le terme Gaul ne se retrouve dans aucune des sources françaises consultées.

Spanish

Save record 2

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