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HEAT EXCHANGE SURFACE [13 records]

Record 1 2023-03-16

English

Subject field(s)
  • Machinery
  • Skating
  • Polar Geography
CONT

... a thermosyphon is a passive heat exchange system. This technology allows cold air to get beneath the foundation of a structure(like a building or a road embankment) and redistributes heat into the air, above the surface. If applied to the [Rideau Canal] Skateway, this technology would promote ice growth by cooling the water beneath the ice.

CONT

Researchers will also test a "thermosyphon" ... The machine draws heat from the water and releases it into the air above.

Key term(s)
  • thermo-siphon
  • thermo siphon
  • thermo-syphon
  • thermo syphon

French

Domaine(s)
  • Machines
  • Patinage
  • Géographie du froid
DEF

Dispositif dans lequel la circulation d'eau est assurée par des différences de température.

CONT

Les chercheurs testeront également un thermosiphon, qui est utilisé pour refroidir l'eau sous la couche supérieure de glace. La machine tire la chaleur de l'eau et la libère dans l'air au-dessus.

Spanish

Campo(s) temático(s)
  • Maquinaria
  • Patinaje
  • Geografía polar
CONT

Los termosifones son dispositivos pasivos, pues no consumen energía para su funcionamiento, tienen alta eficiencia, estructura simple, confiabilidad y bajo costo, son ampliamente utilizados en sistemas de recuperación de calor, incluyendo celdas solares fotovoltaicas, hornos de cocción, equipos electrónicos, intercambiadores de calor y sistemas de enfriamiento electrónicos […]

Save record 1

Record 2 2016-02-22

English

Subject field(s)
  • Coils and Windings (Electrical Components)
CONT

The bent coil increases the overall surface area of the coil for a given duct volume, improving the heat exchange characteristics of the coil.

French

Domaine(s)
  • Bobines et bobinage (Composants électrotechniques)
CONT

[La] bobine coudée augmente la surface active générale de la bobine pour un volume canalisé donné, ce qui améliore les caractéristiques d'échange thermique de la bobine.

Spanish

Save record 2

Record 3 2011-06-17

English

Subject field(s)
  • Heat Exchangers
  • Air Conditioning and Heating
DEF

A surface employed in heat exchange equipment which is not in intimate or direct contact with both the heat absorbing and rejecting mediums.

OBS

secondary surface; indirect surface: terms officially approved by the Lexicon Project Committee (New Brunswick).

French

Domaine(s)
  • Échangeurs de chaleur
  • Conditionnement de l'air et chauffage
OBS

surface secondaire; surface indirecte : termes uniformisés par le Comité du projet de lexiques (Nouveau-Brunswick).

Spanish

Save record 3

Record 4 2011-05-04

English

Subject field(s)
  • Air Conditioning and Heating
DEF

That surface of heat exchange equipment which is in direct contact with both the heat absorbing and rejecting media.

CONT

Plain piping or tubing is the most prevalent example of primary surface.

OBS

primary surface; prime surface; direct surface: terms officially approved by the Lexicon Project Committee (New Brunswick).

French

Domaine(s)
  • Conditionnement de l'air et chauffage
OBS

surface primaire; surface directe : termes uniformisés par le Comité du projet de lexiques (Nouveau-Brunswick).

Spanish

Save record 4

Record 5 2003-11-18

English

Subject field(s)
  • Ovens, Furnaces and Boilers (Heating)
DEF

A passage for conveying flame and hot gases around or through water in a steam boiler.

CONT

Steel boilers are fabricated into one assembly of a given size and rating, usually by welding. The heat exchange surface past the firebox usually is an assembly of vertical, horizontal, or slanted tubes. The tubes may be firetube(flue gas inside, heated fluid outside) or watertube(fluid inside).

CONT

The firing tubes are copper clad on the water side. The 2 in. OD by number 13 gauge tubes are formed by telescoping a .030 in. hard phosphorized copper tube over a .065 in. seamless steel tube and drawing over a mandrel and through a die for a tight bond. Long tube life is positively assured under the most aggressive conditions.

French

Domaine(s)
  • Fours et chaudières (Chauffage)
DEF

Chacun des tubes dans lesquels circulent les gaz chauds dans une chaudière.

Spanish

Campo(s) temático(s)
  • Hornos y calderas (Calefacción)
DEF

Tubería que une un horno a una caldera con su chimenea.

Save record 5

Record 6 2003-10-21

English

Subject field(s)
  • Meteorology
  • Thermodynamics
  • Fluid Mechanics and Hydraulics (Physics)
DEF

Convection caused by mechanical forces, such as those arising from air motion over a rough or sloping surface.

CONT

Convection... is a principal means of energy transfer. Distinction is made between free convection(gravitational or buoyant convection), motion caused only by density differences within the fluid; and forced convection, motion induced by mechanical forces such as deflection by a large-scale surface irregularity, turbulent flow caused by friction at the boundary of a fluid, or motion caused by any applied pressure gradient. Free and forced convection are not necessarily exclusive processes. On a windy day with overcast sky, the heat exchange between ground and air is an example of forced convection. On a sunny day with a little wind where the ground temperature rises, both kinds of convection take place.

French

Domaine(s)
  • Météorologie
  • Thermodynamique
  • Mécanique des fluides et hydraulique (Physique)
DEF

Convection d'une masse d'air causée par des forces mécaniques extérieures au système considéré.

Spanish

Campo(s) temático(s)
  • Meteorología
  • Termodinámica
  • Mecánica de fluidos e hidráulica (Física)
DEF

Convección producida por fuerzas mecánicas tales como las debidas al movimiento del aire sobre una superficie rugosa o una pendiente.

Save record 6

Record 7 2003-10-09

English

Subject field(s)
  • Meteorology
  • Thermodynamics
  • Fluid Mechanics and Hydraulics (Physics)
DEF

Convection caused by density differences within the air.

CONT

Free convection is the rising of heated air and the sinking of cooler air without the need of external forces.

CONT

Convection... is a principal means of energy transfer. Distinction is made between free convection(gravitational or buoyant convection), motion caused only by density differences within the fluid; and forced convection, motion induced by mechanical forces such as deflection by a large-scale surface irregularity, turbulent flow caused by friction at the boundary of a fluid, or motion caused by any applied pressure gradient. Free and forced convection are not necessarily exclusive processes. On a windy day with overcast sky, the heat exchange between ground and air is an example of forced convection. On a sunny day with a little wind where the ground temperature rises, both kinds of convection take place.

French

Domaine(s)
  • Météorologie
  • Thermodynamique
  • Mécanique des fluides et hydraulique (Physique)
DEF

Convection provoquée par des différences de densité de l'air.

CONT

[La] convection naturelle [...] est causée par le réchauffement diurne de la surface terrestre, résultant souvent en la formation de nuages Cumulus.

Spanish

Campo(s) temático(s)
  • Meteorología
  • Termodinámica
  • Mecánica de fluidos e hidráulica (Física)
DEF

Convección producida por diferencias de densidad dentro del aire.

Save record 7

Record 8 2000-02-29

English

Subject field(s)
  • Cooling and Ventilating Systems
DEF

Cooling obtained by adiabatic exchange of heat between air and water sprays or jets.

CONT

Evaporative cooling : involves adiabatic heat exchange between air and a water spray or wetted surface. The water assumes the wetbulb temperature of the air, which remains constant during its traverse of the exchanger.

French

Domaine(s)
  • Systèmes de refroidissement et de ventilation
DEF

Refroidissement par échange adiabatique de chaleur entre l'air et l'eau pulvérisée ou ruisselante [...]

Spanish

Save record 8

Record 9 2000-02-29

English

Subject field(s)
  • Steam-Powered Machines and Condensers
  • Air Conditioning and Heating
  • Freezing and Refrigerating
DEF

A refrigerant condenser in which part of the heat rejection may be accomplished by raising the temperature of an air stream passing over a heat exchange surface and the remainder by evaporation of water sprayed or otherwise distributed over the heat exchange surface.

Key term(s)
  • evaporator condenser

French

Domaine(s)
  • Machines à vapeur et condenseurs
  • Conditionnement de l'air et chauffage
  • Congélation, surgélation et réfrigération
DEF

Condenseur dans lequel l'évacuation de la chaleur apportée par le frigorigène est obtenue essentiellement par circulation forcée d'air et par évaporation d'eau.

Spanish

Save record 9

Record 10 1995-06-30

English

Subject field(s)
  • Water Heaters and Softeners (Household)
  • Energy Transformation
  • Solar Energy
DEF

A device, which is designed to transfer heat easily... from one fluid to another while preventing mixing of the two fluids, made of a simple coil tube immersed in the storage tank that rely on natural conversion to move the water inside the tank past the heat exchange surface.

CONT

The heat exchanger coil is generally fabricated from either heavy-walled cooper or stainless steel tubing. The coil is inserted into the solar storage tank during the initial phases of tank construction.

CONT

The coil in tank heat exchanger can be used to transfer heat either from collector to storage or from storage to end use. Finned coils provide a large surface area to increase effectiveness.

French

Domaine(s)
  • Chauffe-eau et adoucisseurs d'eau
  • Transformation de l'énergie
  • Énergie solaire
CONT

Dans les régions où le gel est à craindre, l'addition de glycol dans le circuit d'eau des insolateurs rend cette eau impropre aux usages domestiques et oblige à installer un échangeur thermique à serpentin.

Spanish

Save record 10

Record 11 1990-01-23

English

Subject field(s)
  • Ovens, Furnaces and Boilers (Heating)
CONT

Steel boilers are fabricated into one assembly of a given size and rating, usually by welding. The heat exchange surface past the firebox usually is an assembly of vertical, horizontal, or slanted tubes. The tubes may be firetube(flue gas inside, heated fluid outside) or watertube(fluid inside). The tubes may be in one or more passes. As with cast-iron boilers, dry base, wet leg, or wet base design may be used. The majority of small steel heating boilers are of dry base, vertical firetube design. Larger boilers usually have horizontal or slanted tubes; both firetube and watertube designs are used. A popular design for medium and large steel boilers, is the Scotch, or Scotch Marine, which is characterized by having a central fluid-backed cylindrical firebox, surrounded by firetubes in one or more passes, all within the outer shell.... Steel boiler sizes range from approximately 14. 7 kW(150 mBh) to the largest boilers made.

OBS

The boiler heats the water for circulation through the system. It may be rectangular or square (occasionally even round) and made of steel or cast iron.

OBS

Boilers may be grouped into classes based on working pressure and temperature, fuel used, shape and size [materials of construction]....

French

Domaine(s)
  • Fours et chaudières (Chauffage)
CONT

GÉNÉRATEURS EN ACIER. Considérations sur l'utilisation de l'acier. [...] Sa grande résistance à la pression fera que ce matériau sera utilisé: -pour les générateurs à eau chaude [...], -pour les générateurs à eau surchauffée [...], -pour les générateurs à vapeur. [...] [Ils comportent:] 1. L'échangeur [...] 2. Le foyer [...] conçu pour utiliser le charbon, le fuel-oil, le gaz. [...] Les chaudières en acier peuvent être construites en un seul bloc ou comporter les éléments indépendants (généralement sectionnés).

OBS

Chaudière: Certains auteurs incluent l'air dans les types de fluide caloporteur de la chaudière. En général, on devrait plutôt dire "chaudière" lorsque le fluide caloporteur est l'eau ou la vapeur et "générateur d'air chaud", lorsque le fluide, est l'air.

OBS

générateur; chaudière: Certains auteurs semblent employer indifféremment ces termes, peu importe l'importance de l'appareil. Cependant, de façon générale, "générateur" serait réservé aux "appareils de chauffage de très grande importance"; dans d'autres cas, le terme "générateur", prendrait le sens général "d'appareil qui produit de la chaleur".

Spanish

Save record 11

Record 12 1990-01-08

English

Subject field(s)
  • Ovens, Furnaces and Boilers (Heating)
CONT

Steel boilers are fabricated into one assembly of a given size and rating, usually by welding. The heat exchange surface past the firebox usually is an assembly of vertical, horizontal, or slanted tubes. The tubes may be firetube(flue gas inside, heated fluid outside) or watertube(fluid inside).

French

Domaine(s)
  • Fours et chaudières (Chauffage)
DEF

(...) chacun des tubes dans lesquels circule l'eau dans une chaudière.

CONT

(...) les chaudières à tubes d'eau (...) sont constituées d'un faisceau de tubes de petit diamètre où circule un mélange d'eau et de vapeur, chauffé par convection ou rayonnement par les gaz de combustion.

Spanish

Save record 12

Record 13 1985-08-12

English

Subject field(s)
  • Energy Transformation
  • Effects of Heat (Energy Transfer)
  • Geological Research and Exploration
CONT

The water/rock interface must have the greatest possible contact area.

French

Domaine(s)
  • Transformation de l'énergie
  • Effets de la chaleur (Transfert de l'énergie)
  • Recherches et prospections géologiques

Spanish

Save record 13

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