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1 soortelijke warmte
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2 Eigenwärme
f1. PHYSIOL. body temperature2. PHYS. specific heat* * *Ei|gen|wär|mefbody heat* * *2. PHYS specific heat -
3 spezifische Warmeaustauschoberflache der Deslillationsentsalzunganlage
удельная поверхность теплообмена дистилляционной опреснительной установки
удельная поверхность теплообмена
Отношение суммарной площади поверхности теплообмена дистилляционной опреснительной установки к часовой производительности этой установки.
[ ГОСТ 23078-78]Тематики
Синонимы
EN
DE
FR
- surface d’echange de chaleur specifique pour installation de dessalement par distillation
7. Удельная поверхность теплообмена дистилляционной опреснительной установки
Удельная поверхность теплообмена
D. Spezifische Warmeaustauschoberflache der Deslillationsentsalzunganlage
E. Specific heat exchage surface for distillation desalination plant
F. Surface d’echange de chaleur specifique pour installation de dessalement par distillation
Отношение суммарной площади поверхности теплообмена дистилляционной опреснительной установки к часовой производительности этой установки
Источник: ГОСТ 23078-78: Установки и аппараты опреснительные дистилляционные. Термины и определения оригинал документа
Немецко-русский словарь нормативно-технической терминологии > spezifische Warmeaustauschoberflache der Deslillationsentsalzunganlage
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4 spezifischer Warmeverbrauch der Destillationsentsalzunganlage
удельный расход теплоты дистилляционной опреснительной установки
удельный расход теплоты
Отношение количества теплоты, затраченной на производство дистиллята, к массе этого дистиллята.
[ ГОСТ 23078-78]Тематики
Синонимы
EN
DE
FR
- debit specifique de chaleur pour installation de dessalement par distillation
5. Удельный расход теплоты дистилляционной опреснительной установки
Удельный расход теплоты
D. Spezifischer Warmeverbrauch der Destillationsentsalzunganlage
E. Specific heat rate for distillation desalination plant
F. Debit specifique de chaleur pour installation de dessalement par distillation
Отношение количества теплоты, затраченной на производство дистиллята, к массе этого дистиллята
Источник: ГОСТ 23078-78: Установки и аппараты опреснительные дистилляционные. Термины и определения оригинал документа
Немецко-русский словарь нормативно-технической терминологии > spezifischer Warmeverbrauch der Destillationsentsalzunganlage
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5 Wärmekapazität
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6 c
< phys> ■ velocity of light (c); speed of light; light velocity<phys.msr> (Vorsilbe für Einheiten: 10-2) ■ centi (c)<phys.therm> (z.B. in J/kg K) ■ specific heat capacity (c) -
7 q
<phys.therm> ■ specific heat (q) -
8 spezifische Wärme
f < therm> ■ specific heat -
9 spezifische Wärmekapazität
f (c) <phys.therm> (z.B. in J/kg K) ■ specific heat capacity (c)German-english technical dictionary > spezifische Wärmekapazität
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10 spezifische Wärmemenge
f (q) <phys.therm> ■ specific heat (q)German-english technical dictionary > spezifische Wärmemenge
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11 isobare spezifische Wärmekapazität
Deutsch-Englisch Wörterbuch Engineering > isobare spezifische Wärmekapazität
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12 spezifische Wärme
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13 spezifische Wärme
Deutsch-Englisch Fachwörterbuch Architektur und Bauwesen > spezifische Wärme
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14 spezifische Wärmekapazität
Deutsch-Englisch Fachwörterbuch Architektur und Bauwesen > spezifische Wärmekapazität
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15 spezifische Wärme
Deutsch-Englisch Wörterbuch der Elektrotechnik und Elektronik > spezifische Wärme
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16 spezifische Wärme
fHeizung, Be- & Entlüftung, Klimatisierung, Werkstoffeigenschaften specific heat -
17 spezifische Wärmekapazität
fHeizung, Be- & Entlüftung, Klimatisierung, Werkstoffeigenschaften specific heat capacityDeutsch-Englisch bauwesen Wörterbuch > spezifische Wärmekapazität
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18 spezifische Torfverbrennungswärme nach Kalorimeterbombe
удельная теплота сгорания торфа по бомбе
Высшая теплота сгорания торфа с учетом теплоты образования и растворения в воде серной и азотной кислот.
[ ГОСТ 21123-85]Недопустимые, нерекомендуемые
Тематики
Обобщающие термины
EN
DE
Немецко-русский словарь нормативно-технической терминологии > spezifische Torfverbrennungswärme nach Kalorimeterbombe
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19 spezifisch
I Adj. specific (auch MED.); spezifisches Gewicht specific weight (PHYS. gravity); spezifisch sein für be specific ( oder peculiar) toII Adv. specifically* * *specific* * *spe|zi|fisch [Spe'tsiːfɪʃ, sp-]1. adjspecific2. advspecifically; (= typisch) typically* * *(particular; exactly stated or described: Each of the bodily organs has its own specific function.) specific* * *spe·zi·fisch[ʃpeˈtsi:fɪʃ]I. adj2. (speziell) specificII. adv typically* * *1.Adjektiv specific; characteristic <smell, style>2.spezifisches Gewicht/spezifische Wärme — (Phys.) specific gravity/heat
adverbial specifically* * *spezifisches Gewicht specific weight (PHYS gravity);spezifisch sein für be specific ( oder peculiar) toB. adv specifically…spezifisch im adj:gattungsspezifisch specific ( oder peculiar) to the type, type-specific;rollenspezifisch specific ( oder peculiar) to the role, role-specific;systemspezifisch system-specific* * *1.Adjektiv specific; characteristic <smell, style>2.spezifisches Gewicht/spezifische Wärme — (Phys.) specific gravity/heat
adverbial specifically -
20 Dauerstrombelastbarkeit, f
(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
Немецко-русский словарь нормативно-технической терминологии > Dauerstrombelastbarkeit, f
- 1
- 2
См. также в других словарях:
Specific heat — specific spe*cif ic (sp[ e]*s[i^]f [i^]k), a. [F. sp[ e]cifique, or NL. spesificus; L. species a particular sort or kind + facere to make. Cf. {specify}.] 1. Of or pertaining to a species; characterizing or constituting a species; possessing the… … The Collaborative International Dictionary of English
specific heat — n 1) the ratio of the quantity of heat required to raise the temperature of a body one degree to that required to raise the temperature of an equal mass of water one degree 2) the heat in calories required to raise the temperature of one gram of… … Medical dictionary
specific heat — n. 1. the number of calories needed to raise the temperature of one gram of a given substance 1°C 2. the ratio of the amount of heat required to raise the temperature of a given mass of a substance one degree to the amount of heat required to… … English World dictionary
specific heat — Physics. 1. the number of calories required to raise the temperature of 1 gram of a substance 1°C, or the number of BTU s per pound per degree F. 2. (originally) the ratio of the thermal capacity of a substance to that of standard material. [1825 … Universalium
specific heat — savitoji šiluminė talpa statusas T sritis Standartizacija ir metrologija apibrėžtis Vienetinės masės medžiagos šiluminė talpa. atitikmenys: angl. heat capacity per unit mass; massic heat capacity; specific heat; specific heat capacity vok.… … Penkiakalbis aiškinamasis metrologijos terminų žodynas
specific heat — savitoji šiluminė talpa statusas T sritis Standartizacija ir metrologija apibrėžtis Šiluminė talpa, padalyta iš masės. atitikmenys: angl. heat capacity per unit mass; massic heat capacity; specific heat; specific heat capacity vok. Eigenwärme, f; … Penkiakalbis aiškinamasis metrologijos terminų žodynas
specific heat — savitoji šiluminė talpa statusas T sritis Standartizacija ir metrologija apibrėžtis Šilumos kiekis, kurį reikia suteikti 1 kg medžiagos, kad jos temperatūra pakiltų vienu kelvinu. atitikmenys: angl. heat capacity per unit mass; massic heat… … Penkiakalbis aiškinamasis metrologijos terminų žodynas
specific heat — noun a) the ratio of the amount of heat needed to raise the temperature of a unit mass of substance by a unit degree to the amount of heat needed to raise that of the same mass of water by the same amount b) the amount of heat, in calories,… … Wiktionary
specific heat — savitoji šiluma statusas T sritis chemija apibrėžtis Šilumos kiekis, kurį reikia suteikti 1 kg medžiagos, kad jos temperatūra pakiltų vienu kelvinu. atitikmenys: angl. specific heat rus. удельная теплота … Chemijos terminų aiškinamasis žodynas
specific heat — savitoji šiluma statusas T sritis fizika atitikmenys: angl. specific heat vok. spezifische Wärme, f rus. удельная теплота, f pranc. chaleur massique, f; chaleur spécifique, f … Fizikos terminų žodynas
Specific heat capacity — Specific heat capacity, also known simply as specific heat, is the measure of the heat energy required to increase the temperature of a unit quantity of a substance by a certain temperature interval. The term originated primarily through the work … Wikipedia