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HEAD-LOSS [16 records]
Record 1 - internal organization data 2016-03-11
Record 1, English
Record 1, Subject field(s)
- Fluid Mechanics and Hydraulics (Physics)
- Hydrology and Hydrography
- Transport of Water (Water Supply)
Record 1, Main entry term, English
- head loss
1, record 1, English, head%20loss
correct
Record 1, Abbreviations, English
Record 1, Synonyms, English
- head-loss 2, record 1, English, head%2Dloss
correct
- lost head 3, record 1, English, lost%20head
correct
- loss of head 4, record 1, English, loss%20of%20head
correct, standardized
- energy loss 5, record 1, English, energy%20loss
correct
- loss of energy 6, record 1, English, loss%20of%20energy
correct
- pressure loss 7, record 1, English, pressure%20loss
correct
Record 1, Textual support, English
Record number: 1, Textual support number: 1 DEF
The drop in the sum of pressure head, velocity head, and potential head between two points along the path of a flowing fluid. 8, record 1, English, - head%20loss
Record number: 1, Textual support number: 1 CONT
What engineers call head loss or lost head is more specifically the energy lost by a unit weight of water because of surface resistance within the conduit, mechanical energy being converted into nonrecoverable heat energy. 3, record 1, English, - head%20loss
Record number: 1, Textual support number: 1 OBS
loss of head : term standardized by the British Standards Institution(British Standard No. 4118). 9, record 1, English, - head%20loss
Record 1, French
Record 1, Domaine(s)
- Mécanique des fluides et hydraulique (Physique)
- Hydrologie et hydrographie
- Adduction d'eau (Alimentation en eau)
Record 1, Main entry term, French
- perte de charge
1, record 1, French, perte%20de%20charge
correct, feminine noun
Record 1, Abbreviations, French
Record 1, Synonyms, French
Record 1, Textual support, French
Record number: 1, Textual support number: 1 DEF
Réduction de la charge, correspondant à l'énergie dissipée au cours de l'écoulement. 2, record 1, French, - perte%20de%20charge
Record number: 1, Textual support number: 1 CONT
La perte de charge est une diminution de pression provoquée par la résistance à l'écoulement d'un fluide ou par perte d'énergie non convertible en travail utile. 3, record 1, French, - perte%20de%20charge
Record number: 1, Textual support number: 2 CONT
Si le tube a une rugosité constante sur toute sa longueur, la perte de charge est proportionnelle à la longueur [...] 4, record 1, French, - perte%20de%20charge
Record 1, Spanish
Record 1, Campo(s) temático(s)
- Mecánica de fluidos e hidráulica (Física)
- Hidrología e hidrografía
- Transporte de agua (Abastecimiento de agua)
Record 1, Main entry term, Spanish
- pérdida de carga
1, record 1, Spanish, p%C3%A9rdida%20de%20carga
correct, feminine noun
Record 1, Abbreviations, Spanish
Record 1, Synonyms, Spanish
- pérdida de energía 2, record 1, Spanish, p%C3%A9rdida%20de%20energ%C3%ADa
feminine noun
Record 1, Textual support, Spanish
Record number: 1, Textual support number: 1 DEF
Disminución de la carga total, expresada en unidades de altura, debida a la disipación de energía. 2, record 1, Spanish, - p%C3%A9rdida%20de%20carga
Record 2 - internal organization data 2010-05-12
Record 2, English
Record 2, Subject field(s)
- Equipment and Tools (Water Supply)
- Water Treatment (Water Supply)
Record 2, Main entry term, English
- clogged filter 1, record 2, English, clogged%20filter
Record 2, Abbreviations, English
Record 2, Synonyms, English
Record 2, Textual support, English
Record number: 2, Textual support number: 1 CONT
Filtration of clarified water at a limited rate(7 m/h)... in open filters and at higher rates in closed filters where the head-loss can be higher; it is not generally possible to exceed 0. 6 bar with a clogged filter without spoiling the quality of the filtered water. 1, record 2, English, - clogged%20filter
Record 2, French
Record 2, Domaine(s)
- Équipement et outillage (Alimentation en eau)
- Traitement des eaux
Record 2, Main entry term, French
- filtre colmaté
1, record 2, French, filtre%20colmat%C3%A9
correct, masculine noun
Record 2, Abbreviations, French
Record 2, Synonyms, French
- filtre encrassé 1, record 2, French, filtre%20encrass%C3%A9
correct, masculine noun
Record 2, Textual support, French
Record number: 2, Textual support number: 1 CONT
Filtration d'eau décantée à vitesse limitée (7 m/h) en filtres ouverts, et à vitesse plus élevée en filtres fermés où l'on peut disposer d'une perte de charge plus importante; on ne peut, en général, excéder la valeur de 0.6 bar, filtre colmaté, sous peine de nuire à la qualité de l'eau filtrée. 1, record 2, French, - filtre%20colmat%C3%A9
Record 2, Spanish
Record 2, Textual support, Spanish
Record 3 - internal organization data 1982-03-11
Record 3, English
Record 3, Subject field(s)
- Water Treatment (Water Supply)
- Geology
Record 3, Main entry term, English
- round grain 1, record 3, English, round%20grain
Record 3, Abbreviations, English
Record 3, Synonyms, English
Record 3, Textual support, English
Record number: 3, Textual support number: 1 OBS
The porous medium.(a) Physical properties.... Given an equal grain size, the head-loss increase is less with coarse grains than with round grains for,... coarse grains bed down less easily than round grains, and leave larger spaces for the water to pass through. 1, record 3, English, - round%20grain
Record 3, French
Record 3, Domaine(s)
- Traitement des eaux
- Géologie
Record 3, Main entry term, French
- grain rond
1, record 3, French, grain%20rond
correct
Record 3, Abbreviations, French
Record 3, Synonyms, French
Record 3, Textual support, French
Record number: 3, Textual support number: 1 OBS
Le milieu poreux. a) Caractéristiques physiques. [...] A granulométrie égale, l'accroissement de perte de charge est plus faible avec des grains anguleux qu'avec des grains ronds, car [...] les grains anguleux s'imbriquent moins facilement les uns dans les autres que les grains ronds, et laissent des sections de passage plus grandes; [...] 1, record 3, French, - grain%20rond
Record 3, Spanish
Record 3, Textual support, Spanish
Record 4 - internal organization data 1982-03-11
Record 4, English
Record 4, Subject field(s)
- Measuring Instruments (Engineering)
- Fluid Mechanics and Hydraulics (Physics)
Record 4, Main entry term, English
- mercury differential pressure gauge 1, record 4, English, mercury%20differential%20pressure%20gauge
Record 4, Abbreviations, English
Record 4, Synonyms, English
Record 4, Textual support, English
Record number: 4, Textual support number: 1 OBS
Depending on the type of filter and its control system, it may be necessary to monitor : the degree of clogging of the filter bed by means of a head-loss indicator which may be an ordinary pressure gauge, a differential pressure gauge(mercury or diaphragm type) or even a vacuum gauge(siphon control). 1, record 4, English, - mercury%20differential%20pressure%20gauge
Record 4, French
Record 4, Domaine(s)
- Instruments de mesure (Ingénierie)
- Mécanique des fluides et hydraulique (Physique)
Record 4, Main entry term, French
- manomètre différentiel à mercure
1, record 4, French, manom%C3%A8tre%20diff%C3%A9rentiel%20%C3%A0%20mercure
correct
Record 4, Abbreviations, French
Record 4, Synonyms, French
Record 4, Textual support, French
Record number: 4, Textual support number: 1 OBS
Suivant les types de filtres et leur régulation, on peut être amené à contrôler: l'état d'encrassement du lit filtrant au moyen d'un indicateur de colmatage qui peut être un manomètre simple, un manomètre différentiel à mercure ou à membrane ou même un vacuomètre (cas de la régulation par siphon). 1, record 4, French, - manom%C3%A8tre%20diff%C3%A9rentiel%20%C3%A0%20mercure
Record 4, Spanish
Record 4, Textual support, Spanish
Record 5 - internal organization data 1982-03-11
Record 5, English
Record 5, Subject field(s)
- Equipment and Tools (Water Supply)
- Water Treatment (Water Supply)
Record 5, Main entry term, English
- Chamberland filter
1, record 5, English, Chamberland%20filter
correct
Record 5, Abbreviations, English
Record 5, Synonyms, English
Record 5, Textual support, English
Record number: 5, Textual support number: 1 CONT
The Chamberland filters make use of porcelain candles of very fine porosity giving a high head-loss... for a small flow of water. 1, record 5, English, - Chamberland%20filter
Record 5, French
Record 5, Domaine(s)
- Équipement et outillage (Alimentation en eau)
- Traitement des eaux
Record 5, Main entry term, French
- filtre Chamberland
1, record 5, French, filtre%20Chamberland
correct, masculine noun
Record 5, Abbreviations, French
Record 5, Synonyms, French
Record 5, Textual support, French
Record number: 5, Textual support number: 1 CONT
Les filtres Chamberland utilisent [...] des bougies en porcelaine d'une porosité très fine qui conduit pour un faible débit d'eau, à une perte de charge importante [...] 1, record 5, French, - filtre%20Chamberland
Record 5, Spanish
Record 5, Textual support, Spanish
Record 6 - internal organization data 1982-03-11
Record 6, English
Record 6, Subject field(s)
- Water Treatment (Water Supply)
Record 6, Main entry term, English
- filtration front 1, record 6, English, filtration%20front
Record 6, Abbreviations, English
Record 6, Synonyms, English
Record 6, Textual support, English
Record number: 6, Textual support number: 1 OBS
... where the filter no longer gives clear water once the maximum head-loss... is reached, the curve representing the pressures at different points in the filter... reaches the floor without having a straight section, which means that the filtration front has passed the floor and the filter is already pierced. 1, record 6, English, - filtration%20front
Record 6, French
Record 6, Domaine(s)
- Traitement des eaux
Record 6, Main entry term, French
- front de filtration
1, record 6, French, front%20de%20filtration
correct
Record 6, Abbreviations, French
Record 6, Synonyms, French
Record 6, Textual support, French
Record number: 6, Textual support number: 1 OBS
Dans le cas [...] où le filtre ne donne plus d'eau claire quand est atteinte la perte de charge maximale [...] la courbe représentative des pressions aux différents points du filtre [...] atteint le plancher sans avoir de partie linéaire, c'est-à-dire que le front de filtration a dépassé le plancher et que le filtre s'est déjà crevé. 1, record 6, French, - front%20de%20filtration
Record 6, Spanish
Record 6, Textual support, Spanish
Record 7 - internal organization data 1982-03-11
Record 7, English
Record 7, Subject field(s)
- Scientific Measurements and Analyses
- Water Treatment (Water Supply)
- Geology
Record 7, Main entry term, English
- coarse grain 1, record 7, English, coarse%20grain
Record 7, Abbreviations, English
Record 7, Synonyms, English
Record 7, Textual support, English
Record number: 7, Textual support number: 1 OBS
The porous medium.(a) Physical properties.... Given an equal grain size, the head-loss increase is less with coarse grains than with round grains for,... coarse grains bed down less easily than round grains, and leave larger spaces for the water to pass through. 1, record 7, English, - coarse%20grain
Record 7, French
Record 7, Domaine(s)
- Mesures et analyse (Sciences)
- Traitement des eaux
- Géologie
Record 7, Main entry term, French
- grain anguleux
1, record 7, French, grain%20anguleux
correct
Record 7, Abbreviations, French
Record 7, Synonyms, French
Record 7, Textual support, French
Record number: 7, Textual support number: 1 OBS
Le milieu poreux. a) Caractéristiques physiques. [...] A granulométrie égale, l'accroissement de perte de charge est plus faible avec des grains anguleux qu'avec des grains ronds, car [...] les grains anguleux s'imbriquent moins facilement les uns dans les autres que les grains ronds, et laissent des sections de passage plus grandes; [...] 1, record 7, French, - grain%20anguleux
Record 7, Spanish
Record 7, Textual support, Spanish
Record 8 - internal organization data 1982-03-11
Record 8, English
Record 8, Subject field(s)
- Fluid Mechanics and Hydraulics (Physics)
Record 8, Main entry term, English
- linear head-loss 1, record 8, English, linear%20head%2Dloss
Record 8, Abbreviations, English
Record 8, Synonyms, English
Record 8, Textual support, English
Record number: 8, Textual support number: 1 OBS
Point... showing the start of the linear head-loss, indicates the level... reached by the impurities in the sand; below... as the head-loss is linear, the sand is clean. 1, record 8, English, - linear%20head%2Dloss
Record 8, French
Record 8, Domaine(s)
- Mécanique des fluides et hydraulique (Physique)
Record 8, Main entry term, French
- perte de charge linéaire
1, record 8, French, perte%20de%20charge%20lin%C3%A9aire
correct
Record 8, Abbreviations, French
Record 8, Synonyms, French
Record 8, Textual support, French
Record number: 8, Textual support number: 1 OBS
Le point [...] figuratif du début de la perte de charge linéaire indique le niveau [...] atteint par les impuretés dans le sable; en-dessous [...] la perte de charge étant linéaire le sable est propre. 1, record 8, French, - perte%20de%20charge%20lin%C3%A9aire
Record 8, Spanish
Record 8, Textual support, Spanish
Record 9 - internal organization data 1982-03-11
Record 9, English
Record 9, Subject field(s)
- Measuring Instruments (Engineering)
- Fluid Mechanics and Hydraulics (Physics)
Record 9, Main entry term, English
- diaphragm differential pressure gauge 1, record 9, English, diaphragm%20differential%20pressure%20gauge
Record 9, Abbreviations, English
Record 9, Synonyms, English
Record 9, Textual support, English
Record number: 9, Textual support number: 1 OBS
Depending on the type of filter and its control system, it may be necessary to monitor : the degree of clogging of the filter bed by means of a head-loss indicator which may be an ordinary pressure gauge, a differential pressure gauge(mercury or diaphragm type) or even a vacuum gauge(siphon control). 1, record 9, English, - diaphragm%20differential%20pressure%20gauge
Record 9, French
Record 9, Domaine(s)
- Instruments de mesure (Ingénierie)
- Mécanique des fluides et hydraulique (Physique)
Record 9, Main entry term, French
- manomètre différentiel à membrane
1, record 9, French, manom%C3%A8tre%20diff%C3%A9rentiel%20%C3%A0%20membrane
correct
Record 9, Abbreviations, French
Record 9, Synonyms, French
Record 9, Textual support, French
Record number: 9, Textual support number: 1 OBS
Suivant les types de filtres et leur régulation, on peut être amené à contrôler: l'état d'encrassement du lit filtrant au moyen d'un indicateur de colmatage qui peut être un manomètre simple, un manomètre différentiel à mercure ou à membrane ou même un vacuomètre (cas de la régulation par siphon). 1, record 9, French, - manom%C3%A8tre%20diff%C3%A9rentiel%20%C3%A0%20membrane
Record 9, Spanish
Record 9, Textual support, Spanish
Record 10 - internal organization data 1982-03-09
Record 10, English
Record 10, Subject field(s)
- Measuring Instruments (Engineering)
- Applications of Automation
Record 10, Main entry term, English
- head-loss sensor
1, record 10, English, head%2Dloss%20sensor
correct
Record 10, Abbreviations, English
Record 10, Synonyms, English
Record 10, Textual support, English
Record number: 10, Textual support number: 1 CONT
Current examples of fully-automated systems are filter plants in which washing of filters is monitored by readings from head-loss sensors... 1, record 10, English, - head%2Dloss%20sensor
Record 10, French
Record 10, Domaine(s)
- Instruments de mesure (Ingénierie)
- Automatisation et applications
Record 10, Main entry term, French
- capteur de perte de charge
1, record 10, French, capteur%20de%20perte%20de%20charge
correct, masculine noun
Record 10, Abbreviations, French
Record 10, Synonyms, French
Record 10, Textual support, French
Record number: 10, Textual support number: 1 CONT
Ainsi sont couramment automatisées les installations de filtration dans lesquelles le lavage des filtres est commandé par exemple à partir des indications de capteurs de perte de charge [...] 1, record 10, French, - capteur%20de%20perte%20de%20charge
Record 10, Spanish
Record 10, Textual support, Spanish
Record 11 - internal organization data 1981-04-01
Record 11, English
Record 11, Subject field(s)
- Chemistry
- Pipes and Fittings
Record 11, Main entry term, English
- macropore resin
1, record 11, English, macropore%20resin
correct
Record 11, Abbreviations, English
Record 11, Synonyms, English
Record 11, Textual support, English
Record number: 11, Textual support number: 1 CONT
In order to withstand the head-loss caused by the combination of high speed and clogging, ion exchangers have to be highly resistant; macropore resins are most often used. 1, record 11, English, - macropore%20resin
Record 11, French
Record 11, Domaine(s)
- Chimie
- Tuyauterie et raccords
Record 11, Main entry term, French
- résine macroporeuse
1, record 11, French, r%C3%A9sine%20macroporeuse
correct, feminine noun
Record 11, Abbreviations, French
Record 11, Synonyms, French
Record 11, Textual support, French
Record number: 11, Textual support number: 1 CONT
Pour résister à la perte de charge due à la fois à la vitesse élevée et au colmatage, les échangeurs d'ions doivent être particulièrement résistants : les résines macroporeuses sont les plus utilisées. 1, record 11, French, - r%C3%A9sine%20macroporeuse
Record 11, Spanish
Record 11, Textual support, Spanish
Record 12 - internal organization data 1981-01-26
Record 12, English
Record 12, Subject field(s)
- Measuring Instruments (Engineering)
- Chemistry
Record 12, Main entry term, English
- ion exchanger bed 1, record 12, English, ion%20exchanger%20bed
Record 12, Abbreviations, English
Record 12, Synonyms, English
Record 12, Textual support, English
Record number: 12, Textual support number: 1 CONT
Decompacting or backflow washing. During normal operation, with the liquid to be treated passing downwards through the ion exchanger bed, the product becomes compacted, and its head-loss increases slightly... 1, record 12, English, - ion%20exchanger%20bed
Record 12, French
Record 12, Domaine(s)
- Instruments de mesure (Ingénierie)
- Chimie
Record 12, Main entry term, French
- lit d'échangeur d'ions
1, record 12, French, lit%20d%27%C3%A9changeur%20d%27ions
correct, masculine noun
Record 12, Abbreviations, French
Record 12, Synonyms, French
Record 12, Textual support, French
Record number: 12, Textual support number: 1 CONT
Détassage ou lavage à contre-courant. Au cours du fonctionnement normal, dans lequel le liquide à traiter traverse le lit d'échangeur d'ions de haut en bas, le produit se tasse, sa perte de charge augmente légèrement [...] 1, record 12, French, - lit%20d%27%C3%A9changeur%20d%27ions
Record 12, Spanish
Record 12, Textual support, Spanish
Record 13 - internal organization data 1981-01-26
Record 13, English
Record 13, Subject field(s)
- General Vocabulary
Record 13, Main entry term, English
- compacted 1, record 13, English, compacted
Record 13, Abbreviations, English
Record 13, Synonyms, English
Record 13, Textual support, English
Record number: 13, Textual support number: 1 CONT
Decompacting or backflow washing. During normal operation, with the liquid to be treated passing downwards through the ion exchanger bed, the product becomes compacted, and its head-loss increases slightly... 1, record 13, English, - compacted
Record 13, French
Record 13, Domaine(s)
- Vocabulaire général
Record 13, Main entry term, French
- tassé
1, record 13, French, tass%C3%A9
correct
Record 13, Abbreviations, French
Record 13, Synonyms, French
Record 13, Textual support, French
Record number: 13, Textual support number: 1 OBS
Détassage ou lavage à contre-courant. Au cours du fonctionnement normal, dans lequel le liquide à traiter traverse le lit d'échangeur d'ions de haut en bas, le produit se tasse, sa perte de charge augmente légèrement [...] 1, record 13, French, - tass%C3%A9
Record 13, Spanish
Record 13, Textual support, Spanish
Record 14 - internal organization data 1981-01-26
Record 14, English
Record 14, Subject field(s)
- Chemistry
Record 14, Main entry term, English
- preferential passage
1, record 14, English, preferential%20passage
correct
Record 14, Abbreviations, English
Record 14, Synonyms, English
Record 14, Textual support, English
Record number: 14, Textual support number: 1 CONT
To return the product to a state of suspension in water, thus destroying any preferential passages which might have formed as a result of the increase in head-loss. 1, record 14, English, - preferential%20passage
Record 14, French
Record 14, Domaine(s)
- Chimie
Record 14, Main entry term, French
- passage préférentiel
1, record 14, French, passage%20pr%C3%A9f%C3%A9rentiel
correct, masculine noun
Record 14, Abbreviations, French
Record 14, Synonyms, French
Record 14, Textual support, French
Record number: 14, Textual support number: 1 CONT
Remettre le produit en suspension dans l'eau et détruire ainsi les passages préférentiels qui auraient pu se produire par suite de l'augmentation de la perte de charge [...] 1, record 14, French, - passage%20pr%C3%A9f%C3%A9rentiel
Record 14, Spanish
Record 14, Textual support, Spanish
Record 15 - internal organization data 1981-01-26
Record 15, English
Record 15, Subject field(s)
- Scientific Measurements and Analyses
- Water Treatment (Water Supply)
Record 15, Main entry term, English
- true filtration speed 1, record 15, English, true%20filtration%20speed
Record 15, Abbreviations, English
Record 15, Synonyms, English
Record 15, Textual support, English
Record number: 15, Textual support number: 1 OBS
In actual fact, the true filtration speed in the cleanest filter depends on the maximum head-loss that can be tolerated for the whole of the battery;... 1, record 15, English, - true%20filtration%20speed
Record 15, French
Record 15, Domaine(s)
- Mesures et analyse (Sciences)
- Traitement des eaux
Record 15, Main entry term, French
- vitesse de filtration réelle
1, record 15, French, vitesse%20de%20filtration%20r%C3%A9elle
correct
Record 15, Abbreviations, French
Record 15, Synonyms, French
Record 15, Textual support, French
Record number: 15, Textual support number: 1 OBS
En fait, la vitesse de filtration réelle dans le filtre le plus propre dépend de la perte de charge maximale tolérée pour l'ensemble de la batterie; [...] 1, record 15, French, - vitesse%20de%20filtration%20r%C3%A9elle
Record 15, Spanish
Record 15, Textual support, Spanish
Record 16 - internal organization data 1981-01-26
Record 16, English
Record 16, Subject field(s)
- Electrical Measuring Equipment
Record 16, Main entry term, English
- head-loss indicator 1, record 16, English, head%2Dloss%20indicator
Record 16, Abbreviations, English
Record 16, Synonyms, English
Record 16, Textual support, English
Record number: 16, Textual support number: 1 CONT
Head-loss indicator with electrical contacts. 1, record 16, English, - head%2Dloss%20indicator
Record 16, French
Record 16, Domaine(s)
- Appareils de mesures (Électricité)
Record 16, Main entry term, French
- indicateur de pertes de charge
1, record 16, French, indicateur%20de%20pertes%20de%20charge
correct, masculine noun
Record 16, Abbreviations, French
Record 16, Synonyms, French
Record 16, Textual support, French
Record number: 16, Textual support number: 1 CONT
Indicateur de pertes de charge à contacts électriques. 1, record 16, French, - indicateur%20de%20pertes%20de%20charge
Record 16, Spanish
Record 16, Textual support, Spanish
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