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1 heat flow
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2 flow
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3 интенсивность теплового потока
интенсивность теплового потока
P
Количество тепла, образующегося в смазочном слое в единицу времени и передаваемого путем теплопередачи или массопередачи.
[ ГОСТ ИСО 4378-4-2001]Тематики
EN
FR
Русско-французский словарь нормативно-технической терминологии > интенсивность теплового потока
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4 длительный допустимый ток
- courant permanent admissible, m
- courant admissible, m
(длительный) допустимый ток
Максимальное значение электрического тока, который может протекать длительно по проводнику, устройству или аппарату при определенных условиях без превышения определенного значения их температуры в установившемся режиме
[ ГОСТ Р МЭК 60050-826-2009]
Этот ток обозначают IZ
[ ГОСТ Р 50571. 1-2009 ( МЭК 60364-1: 2005)]EN
(continuous) current-carrying capacity
ampacity (US)
maximum value of electric current which can be carried continuously by a conductor, a device or an apparatus, under specified conditions without its steady-state temperature exceeding a specified value
[IEV number 826-11-13]
ampacity
The current in amperes that a conductor can carry continuously under the conditions of use without exceeding its temperature rating.
[National Electrical Cod]FR
courant (permanent) admissible, m
valeur maximale du courant électrique qui peut parcourir en permanence, un conducteur, un dispositif ou un appareil, sans que sa température de régime permanent, dans des conditions données, soit supérieure à la valeur spécifiée
[IEV number 826-11-13]Ampacity, the term is defined as the maximum amount of current a cable can carry before sustaining immediate or progressive deterioration. Also described as current rating or current-carrying capacity, is the RMS electric current which a device can continuously carry while remaining within its temperature rating. The ampacity of a cable depends on:
- its insulation temperature rating;
- conductor electrical properties for current;
- frequency, in the case of alternating currents;
- ability to dissipate heat, which depends on cable geometry and its surroundings;
- ambient temperature.
Electric wires have some resistance, and electric current flowing through them causes voltage drop and power dissipation, which heats the cable. Copper or aluminum can conduct a large amount of current before melting, but long before the conductors melt, their insulation would be damaged by the heat.
The ampacity for a power cable is thus based on physical and electrical properties of the material & construction of the conductor and of its insulation, ambient temperature, and environmental conditions adjacent to the cable. Having a large overall surface area may dissipate heat well if the environment can absorb the heat.
In a long run of cable, different conditions govern, and installation regulations normally specify that the most severe condition along the run governs the cable's rating. Cables run in wet or oily locations may carry a lower temperature rating than in a dry installation. Derating is necessary for multiple circuits in close proximity. When multiple cables are near, each contributes heat to the others and diminishes the amount of cooling air that can flow past the individual cables. The overall ampacity of the insulated conductors in a bundle of more than 3 must be derated, whether in a raceway or cable. Usually the de-rating factor is tabulated in a nation's wiring regulations.
Depending on the type of insulating material, common maximum allowable temperatures at the surface of the conductor are 60, 75 and 90 degrees Celsius, often with an ambient air temperature of 30°C. In the U.S., 105°C is allowed with ambient of 40°C, for larger power cables, especially those operating at more than 2 kV. Likewise, specific insulations are rated 150, 200 or 250°C.
The allowed current in cables generally needs to be decreased (derated) when the cable is covered with fireproofing material.
For example, the United States National Electric Code, Table 310-16, specifies that up to three 8 AWG copper wires having a common insulating material (THWN) in a raceway, cable, or direct burial has an ampacity of 50 A when the ambient air is 30°C, the conductor surface temperature allowed to be 75°C. A single insulated conductor in air has 70 A rating.
Ampacity rating is normally for continuous current, and short periods of overcurrent occur without harm in most cabling systems. The acceptable magnitude and duration of overcurrent is a more complex topic than ampacity.
When designing an electrical system, one will normally need to know the current rating for the following:- Wires
- Printed Circuit Board traces, where included
- Fuses
- Circuit breakers
- All or nearly all components used
Some devices are limited by power rating, and when this power rating occurs below their current limit, it is not necessary to know the current limit to design a system. A common example of this is lightbulb holders.
[http://en.wikipedia.org/wiki/Ampacity]
Тематики
- электротехника, основные понятия
Синонимы
EN
DE
- Dauerstrombelastbarkeit, f
- Strombelastbarkeit, f
FR
- courant admissible, m
- courant permanent admissible, m
Русско-французский словарь нормативно-технической терминологии > длительный допустимый ток
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5 run
A n1 ( act or period of running) course f ; a two-mile run une course de deux miles ; that was a splendid run by Reeves Reeves a fait une course magnifique ; to go for a run aller courir ; to take the dog for a run in the park aller faire courir le chien au parc ; to break into a run se mettre à courir ; to do sth at a run faire qch en courant ; to take a run at prendre son élan pour franchir [fence, hedge, stream] ; to give sb a clear run fig laisser le champ libre à qn (at doing pour faire) ;2 ( flight) on the run [prisoner] en fuite, en cavale ○ ; to be on the run from sb/sth fuir qn/qch ; to have sb on the run lit mettre qn en fuite ; fig réussir à effrayer qn ; to make a run for it fuir, s'enfuir ; to make a run for the door se précipiter vers la porte ;3 ( series) (of successes, failures, reds, blacks) série f (of de) ; to have a run of (good) luck être en veine ; to have a run of bad luck jouer de malchance ; a run of fine weather une période de beau temps ; we've had a long run without any illness nous avons eu une longue période sans maladie ; the product has had a good run but… le produit a bien marché mais… ;4 Theat série f de représentations ; to have a long run tenir longtemps l'affiche ; to have a six-month run tenir l'affiche pendant six mois ; the play is beginning its Broadway run la pièce commence à se jouer à Broadway ;5 ( trend) (of events, market) tendance f ; the run of the cards/dice was against me le jeu était contre moi ; against the run of play Sport en sens inverse du cours réel du jeu ; in the normal run of things dans l'ordre normal des choses ; out of the common run hors du commun ;6 ( series of thing produced) ( in printing) tirage m ; ( in industry) série f ; a paperback run of 10,000 un tirage de 10 000 exemplaires en poche ;7 Fin ( on Stock Exchange) ( rush) ruée f ; a run on une ruée sur [stock market, bank, item] ; a run on sterling/the dollar une ruée spéculative sur la livre sterling/le dollar ;8 (trip, route) route f, trajet m ; it's only a short run into town ( in car) avec la voiture on est tout de suite en ville ; to go out for a run in the car aller faire un tour en voiture ; the run up to York la route jusqu'à York ; he does the Leeds run twice a week il fait le trajet jusqu'à Leeds deux fois par semaine ; a ferry on the Portsmouth-Caen run le ferry faisant la traversée Portsmouth-Caen ; a bombing run une mission de bombardement ;10 (for rabbit, chickens) enclos m ;11 (in tights, material) échelle f ;12 ( for skiing etc) piste f ;13 ( in cards) suite f ; a run of three une suite de trois cartes ; ⇒ practice run, test run, trial run.1 ( cover by running) courir [race, heat, stage, distance, marathon] ; I ran the rest of the way j'ai couru le reste du chemin ; she ran a brilliant race/a very fast time elle a fait une course superbe/un très bon temps ; the race will be run at 10.30 la course se court à 10 h 30 ;2 ( drive) to run sb to the station/to hospital conduire qn à la gare/à l'hôpital ; to run sb home ou back reconduire qn ; to run the car over to the garage conduire la voiture au garage ; to run sth over to sb's house apporter qch chez qn en voiture ; to run the car into a tree jeter la voiture contre un arbre ;3 (pass, move) to run one's hand over sth passer la main sur qch ; to run one's finger down the list parcourir la liste du doigt ; to run one's eye(s) over sth parcourir rapidement qch ; to run a duster/the vacuum cleaner over sth passer un coup de chiffon/d'aspirateur sur qch ; to run one's pen through sth rayer qch ;4 ( manage) diriger [business, hotel, store, school, country] ; a well-/badly-run organization une organisation bien/mal dirigée ; who is running things here? qui est-ce qui commande ici? ; I'm running this show ○ ! c'est moi qui commande ○ ! ; stop trying to run my life! arrête de vouloir diriger ma vie! ;5 ( operate) faire fonctionner [machine] ; faire tourner [motor, engine] ; exécuter [program] ; entretenir [car] ; to run sth off the mains/off batteries faire fonctionner qch sur secteur/avec des piles ; the car is cheap to run la voiture est peu coûteuse à entretenir ; to run a tape/a film mettre une cassette/un film ; to run tests on sth effectuer des tests sur qch ; to run a check on sb [police] vérifier les antécédents de qn ; ( generally) prendre des renseignements sur qn ;6 (organize, offer) organiser [competition, lessons, course] ; mettre [qch] en place [train, bus, service] ;7 (extend, pass) (of cable, wire, pipe) to run sth between/from/to/around faire passer qch entre/de/à/autour de ; to run a rope through a ring faire passer une corde dans un anneau ;8 ( cause to flow) faire couler [water, bath] ; ouvrir [tap] ; I'll run you a bath je vais te faire couler un bain ; to run water into/over sth faire couler de l'eau dans/sur qch ;11 ( smuggle) faire passer [qch] en fraude [guns, drugs] ;1 ( move quickly) [person, animal] courir ; to run to catch the bus/to help sb courir pour attraper le bus/pour aider qn ; to run to meet sb courir à la rencontre de qn ; to run across/down/up sth traverser/descendre/monter qch en courant ; to run around the house/around (in) the garden courir dans toute la maison/dans le jardin ; will you run over to the shop and get some milk? peux-tu courir au magasin chercher du lait? ; to run for the train courir pour attraper le train ; to run for the exit courir vers la sortie ; to run for one's country Sport courir pour son pays ; to run in the 100 metres/in the 3.30 (race) courir le 100 mètres/dans la course de 15 h 30 ; she came running towards me elle a couru vers moi ; the customers will come running fig les clients vont se précipiter ;2 ( flee) fuir, s'enfuir ; I dropped everything and ran j'ai tout jeté et je me suis enfui ; to run for one's life s'enfuir pour sauver sa peau ○ ; run for your life!, run for it ○ ! sauve qui peut!, déguerpissons ○ ! ; I had to run for it ○ j'ai dû déguerpir ○ ; there's nowhere to run (to) il n'y a nulle part où aller ; to go running to the police courir à la police ; to go running to one's parents se réfugier chez ses parents ;3 ○ ( rush off) filer ○ ; sorry-must run! ○ désolé-il faut que je file! ○ ;4 ( function) [machine, generator] marcher ; [engine, press] tourner ; to leave the engine running laisser tourner le moteur ; to run off fonctionner sur [mains, battery] ; to run on marcher à [diesel, unleaded] ; to run fast/slow [clock] prendre de l'avance/du retard ; the organization runs very smoothly l'organisation fonctionne parfaitement ;5 (continue, last) [contract, lease] courir ; to have another month to run avoir encore un mois à courir ; to run from… to… [school year, season] aller de… à… ;6 Theat [play, musical] tenir l'affiche ; this show will run and run! ce spectacle tiendra l'affiche pendant des mois! ; to run for six months tenir l'affiche pendant six mois ; the film will run (for) another week le film reste à l'affiche une semaine encore ;7 ( pass) to run past/through sth [frontier, path, line] passer/traverser qch ; to run (from) east to west aller d'est en ouest, être orienté est-ouest ; the road runs north for about ten kilometres la route va vers le nord sur une dizaine de kilomètres ; to run parallel to sth être parallèle à qch ; the stripes run vertically les rayures sont verticales ; the bird has a green stripe running down its back l'oiseau a une bande verte le long du dos ; a scar runs down her arm une cicatrice court le long de son bras ;8 ( move) [sledge, vehicle] glisser (on sur ; forward vers l'avant ; back vers l'arrière) ; [curtain] coulisser (on sur) ; to run through sb's hands [rope] filer entre les mains de qn ; a pain ran up my leg une douleur m'est remontée le long de la jambe ; a wave of excitement ran through the crowd un frisson d'excitation a parcouru la foule ; his eyes ran over the page il a parcouru la page des yeux ; the news ran from house to house la nouvelle s'est transmise de maison en maison ;9 ( operate regularly) [buses, trains] circuler ; they don't run on Sundays ils ne circulent pas le dimanche ; a taxi service/ferry runs between X and Y il existe un service de taxi/un ferry entre X et Y ; the train is running late le train est en retard ; programmes are running late this evening ( on TV) les émissions ont du retard ce soir ; we are running 30 minutes behind schedule ou late nous avons 30 minutes de retard ; we're running ahead of schedule nous sommes en avance ;10 ( flow) [water, liquid, stream, tap, bath, nose] couler ; the tap is running le robinet coule or est ouvert ; my nose is running j'ai le nez qui coule ; tears ran down his face les larmes coulaient sur son visage ; there was water running down the walls il y avait de l'eau qui coulait le long des murs ; my body was running with sweat mon corps ruisselait de sueur ; the streets will be running with blood fig le sang coulera à flots dans les rues ; the river ran red with blood la rivière est devenue rouge de sang ; the meat juices ran pink/clear le jus qui est sorti de la viande était rose/incolore ;11 ( flow when wet or melted) [colour, dye, garment] déteindre ; [ink, makeup, butter, cheese] couler ;12 Pol ( as candidate) se présenter ; to run for être candidat/-e au poste de [mayor, governor] ; to run for president être candidat/-e à la présidence ; to run against se présenter or être candidat/-e contre [person] ;13 ( be worded) [message, speech] se présenter, être libellé sout ; the telex runs… le télex se présente or est libellé comme suit… ; so the argument runs selon l'argument habituellement avancé ;14 ( snag) [tights, material] filer.to have the run of sth avoir qch pour soi ; to give sb the run of sth mettre qch à la disposition de qn ; in the long run à la longue, à longue échéance ; in the short run à brève échéance.■ run about, run around:1 (hurrying, playing etc) courir ; I've been running around all over the place looking for you j'ai couru partout pour essayer de te trouver ;■ run across ○:▶ run across [sth/sb] tomber sur ○ [acquaintance, reference].■ run after:■ run along se sauver ○, filer ○ ; run along! sauve-toi ○ !■ run at:▶ run at [sth]1 ( charge towards) se précipiter sur [door, person] ;2 ( be at) [inflation, unemployment] atteindre, être de l'ordre de [percentage, rate, figure] ; with inflation running at 12% avec une inflation de l'ordre de 12%.■ run away:▶ run away1 ( flee) s'enfuir (from sb devant qn ; to do pour faire) ; to run away from home s'enfuir de chez soi ; to run away from one's responsibilities/a situation fuir ses responsabilités/une situation ;2 ( run off) [water, liquid] couler ;▶ run away with [sth/sb]1 ( flee) partir avec [profits, object, person] ;2 ( carry off easily) rafler ○ [prizes, title] ;4 ( get into one's head) to run away with the idea ou notion that s'imaginer que ; I don't want him running away with that idea je ne veux pas qu'il s'imagine ça ; to let one's emotions/one's enthusiasm run away with one se laisser emporter par ses émotions/son enthousiasme.■ run back:▶ run back [sth], run [sth] back rembobiner [tape, film].▶ run back over [sth] revenir sur [points, plans].■ run down:▶ run down [battery] se décharger ; [watch] retarder ; [exports, reserves] diminuer ; [machine, industry, company] s'essouffler ;▶ run down [sth/sb], run [sth/sb] down1 ( in vehicle) renverser ; to be ou get run down by sth être renversé par qch ;2 (reduce, allow to decline) réduire [production, operations, defences, industry, reserves] ; user [battery] ;3 ( disparage) dénigrer [person, economy] ;4 Naut éperonner, heurter [boat] ;■ run in:▶ run in [sth], run [sth] in roder [car, machine] ; ‘running in-please pass’ ‘en rodage’ ;■ run into:▶ run into [sth/sb]2 ( encounter) rencontrer [person, difficulty, opposition, bad weather] ; to run into debt s'endetter ;3 ( amount to) [debt, income, sales] se compter en [hundreds, millions] ; the trial could run into months le procès pourrait durer des mois.■ run off:▶ run off2 [liquid, water] couler ;▶ run off [sth], run [sth] off1 ( print) sortir [copy] (on sur) ;2 ( contest) disputer [heats].■ run on:▶ run on [meeting, seminar] se prolonger ;▶ run on [sth] ( be concerned with) [mind] être préoccupé par ; [thoughts] revenir sur ; [conversation] porter sur ;▶ run on [sth], run [sth] on1 Print faire suivre [qch] sans alinéa ;2 Literat faire enjamber [line].■ run out:▶ run out1 ( become exhausted) [supplies, resources, oil] s'épuiser ; time is running out le temps manque ; my money ran out mes ressources s'étaient épuisées ; my patience is running out je suis en train de perdre patience ;2 ( have no more) [pen, vending machine] être vide ; sorry, I've run out désolé, je n'en ai plus ; quick, before we run out vite, avant que nous n'ayons plus rien ;3 ( expire) [lease, passport] expirer ;▶ run out of ne plus avoir de [petrol, time, money, ideas] ; the car ran out of petrol la voiture est tombée en panne d'essence ; to be running out of n'avoir presque plus de [petrol, time, money, ideas].■ run out on:▶ run out on [sb] abandonner, laisser tomber ○ [family, lover, ally].■ run over:▶ run over1 [meeting, programme] se prolonger, dépasser l'horaire prévu ; to run over by 10 minutes/by an hour dépasser l'horaire prévu de 10 minutes/d'une heure ;▶ run over [sth/sb], run [sth/sb] over1 ( injure) renverser [person, animal] ; ( kill) écraser [person, animal] ; you'll get run over tu vas te faire écraser ;2 ( drive over) passer sur [log, bump, corpse].■ run through:▶ run through [sth]1 ( pass through) [thought, tune, murmur] courir dans ;3 ( look through) parcourir [list, article, notes] ; ( discuss briefly) passer [qch] en revue [main points, schedule] ;4 (use, get through) dépenser [money, inheritance] ;▶ run [sb] through littér ( with sword) transpercer [person] (with avec, de) ; to run sth through the computer passer qch dans l'ordinateur ; to run sth through a series of tests faire passer une série de tests à qch.■ run to:▶ run to [sth] ( extend as far as) [book, report] faire [number of pages, words] ; her tastes don't run to modern jazz ses goûts ne vont pas jusqu'au jazz moderne ; his salary doesn't run to Caribbean cruises son salaire ne lui permet pas une croisière aux Caraïbes ; I don't think I can run to that je ne crois pas pouvoir me permettre cela.■ run up:▶ run up [sth], run [sth] up1 ( accumulate) accumuler [bill, debt] ;2 ( make) fabriquer [dress, curtains] ;3 ( raise) hisser [flag].▶ run up against [sth] se heurter à [obstacle, difficulty]. -
6 циркуляция морской воды
циркуляция морской воды
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[ http://www.eionet.europa.eu/gemet/alphabetic?langcode=en]EN
sea circulation
Large-scale horizontal water motion within an ocean. The way energy from the sun, stored in the sea, is transported around the world. The currents explain, for example, why the UK has ice-free ports in winter, while St. Petersburg, at the same latitude as the Shetland Islands, needs ice breakers. Evidence is growing that the world's ocean circulation was very different during the last ice age and has changed several times in the distant past, with dramatic effects on climate. The oceans are vital as storehouses, as they absorb more than half the sun's heat reaching the earth. This heat, which is primarily absorbed near the equator is carried around the world and released elsewhere, creating currents which last up to 1.000 years. As the Earth rotates and the wind acts upon the surface, currents carry warm tropical water to the cooler parts of the world. The strength and direction of the currents are affected by landmasses, bottlenecks through narrow straits, and even the shape of the sea-bed. When the warm water reaches polar regions its heat evaporates into the atmosphere, reducing its temperature and increasing its density. When sea-water freezes it leaves salt behind in the unfrozen water and this cold water sinks into the ocean and begins to flow back to the tropics. Eventually it is heated and begins the cycle all over again. (Source: MGH / WRIGHT)
[http://www.eionet.europa.eu/gemet/alphabetic?langcode=en]Тематики
EN
DE
FR
Русско-французский словарь нормативно-технической терминологии > циркуляция морской воды
См. также в других словарях:
heat flow — šilumos srautas statusas T sritis Standartizacija ir metrologija apibrėžtis Šilumos kiekis, pereinantis per tam tikrą paviršių per vienetinį laiko tarpą. atitikmenys: angl. heat flow; heat flow rate; heat flux; thermal flow; thermal flux vok.… … Penkiakalbis aiškinamasis metrologijos terminų žodynas
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heat flow line — šilumos srauto linija statusas T sritis fizika atitikmenys: angl. heat flow line; line of heat flow; line of heat flux vok. Wärmestromlinie, f rus. линия теплового потока, f pranc. ligne du flux de chaleur, f … Fizikos terminų žodynas
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line of heat flow — šilumos srauto linija statusas T sritis fizika atitikmenys: angl. heat flow line; line of heat flow; line of heat flux vok. Wärmestromlinie, f rus. линия теплового потока, f pranc. ligne du flux de chaleur, f … Fizikos terminų žodynas
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density of heat flow rate — šilumos srauto tankis statusas T sritis Standartizacija ir metrologija apibrėžtis Šilumos srautas, padalytas iš ploto, kurį tas srautas statmenai kerta. atitikmenys: angl. areic heat flow rate; density of heat flow rate vok. Wärmestromdichte, f… … Penkiakalbis aiškinamasis metrologijos terminų žodynas
radiant heat flow-rate — šiluminės spinduliuotės srautas statusas T sritis Standartizacija ir metrologija apibrėžtis Tam tikros sistemos elektromagnetinių bangų pavidalu išspinduliuotas, praleistas arba sugertas šilumos srautas. atitikmenys: angl. radiant heat flow rate… … Penkiakalbis aiškinamasis metrologijos terminų žodynas