convection

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Related to Convection cooling: Thermal convection

current

 [kur´ent]
1. something that flows.
2. specifically, electricity transmitted through a circuit.
alternating current a current that periodically flows in opposite directions; its amplitude fluctuates as a sine wave.
convection current a current caused by movement by convection of warmer fluid into an area of cooler fluid.
direct current a current that flows in one direction only; when modeled as a wave, its amplitude is constant. When used medically it is called galvanic current. This current has distinct and important polarity and marked secondary chemical effects.
galvanic current a steady direct current.
current of injury an electric current that flows between injured myocardium and normal myocardium, because such cells have a reduced membrane potential; it may be either diastolic or systolic.
current of injury, diastolic the current that flows from injured to noninjured tissue during electrical diastole.
current of injury, systolic the current that flows from healthy tissue to injured tissue during electrical systole.
inwardly rectifying current current that rectifies so that it passes more easily towards the interior of a cell.
leakage current the electrical current that exists in the parts or metal case of electrical equipment.
outwardly rectifying current current that rectifies so that it passes more easily towards the exterior of a cell.
potassium rectifying c's transmembrane currents that rectify inwardly or outwardly to make adjustments in cellular functions; they are mainly responsible for the repolarization phase of the action potential. There are at least six mechanisms by which potassium ions move across cardiac cell membranes in the role of rectifier.

con·vec·tion

(kon-vek'shŭn),
Conveyance of heat in liquids or gases by movement of the heated particles, as when the layer of water at the bottom of a heated pot rises or the warm air of a room ascends to the ceiling.
[L. con-veho, pp. -vectus, to carry or bring together]

convection

/con·vec·tion/ (kon-vek´shun) the act of conveying or transmission, specifically transmission of heat in a liquid or gas by bulk movement of heated particles to a cooler area.convec´tive

convection

[kənvek′shən]
Etymology: L, convehere, to bring together
(in physics) the transfer of heat through a gas or liquid by the circulation of heated particles.

con·vec·tion

(kŏn-vek'shŭn)
Conveyance of heat in liquids or gases by movement of the heated particles, as when the layer of water at the bottom of a heated pot rises or the warm air of a room ascends to the ceiling.
[L. con-veho, pp. -vectus, to carry or bring together]

convection

the propagation of heat through liquids and gases by the movement of the heated particles, increasing their kinetic energy.

convection

the act of conveying or transmission; specifically, transmission of heat in a liquid or gas by circulation of heated particles.
References in periodicals archive ?
In 1988, Kasperski studied the effects of wind on performance of natural convection cooling towers and evaluated the inside and outside pressure of the towers [4].
It is specifically designed to meet the industry's highest standards as it offers exceptionally high output powers, yet uses convection cooling, thereby significantly extending the equipment's total lifetime and lowering power consumption.
Efficiency: Concrete slab on-grade thermal mass with radiant floor heating system, energy efficient exterior wall material (ten inch aerated autoclaved concrete block units R-30 insulating value) passive solar design, natural cross ventilation with convection cooling through house, reflective radiant barrier installed in roof, high efficiency hot water boiler for radiant floor system and domestic water, photovotaic power system, energy efficient lighting sources
In addition, the racks' fully perforated front and rear doors provide efficient convection cooling and improved visibility and ventilation.
The Astec LPS122 switching power supply can deliver its full rated output of 130W with 30 CFM forced air or 80 W with convection cooling.
The housing can be constructed in one of three different ways: (1) heat sink with ambient-air convection cooling, (2) heat sink with forced air (electrical fan) cooling, or (3) water jacket cooling [5].
It has a ventilated metal case and is mounted vertically for convection cooling.
Before being released into the open air, each core cycles through a nitrogen atmosphere convection cooling section that reduces part temperature to 150[degrees]C, shortening the overall length of the line.
The Conduction Cooled Frame Assemblies from APW Electronic Solutions are designed for circuit boards requiring cooling in harsh environments, especially when convection cooling is not possible.
Molded into the covers are various lock-head options and a patented venting system for convection cooling.
Boards are mounted vertically, allowing for natural convection cooling, which is often assisted by forced air cooling.
Heat gain in summer is hoped not to be a problem, and the walls of the lower part can be opened on hot days to allow convection cooling.