Enertron Glossary

Glossary TermDefinition
AnemometerAn instrument used for measuring the speed of airflow, or any current of gas.
Boiling LimitA boiling heat transfer limitation at the evaporator section of a heat pipe
Capillary ForceThe ability of a liquid to flow in narrow spaces (wick) without the assistance of, or even in opposition to, external forces like gravity.
Capillary LimitThe maximum possible capillary pressure for any liquid-wick combination.
Entrainment LimitThe limit at which liquid will be torn from the surface of the wick and entrained into the vapor.
Heat LoadFor electronics cooling, it is the amount of heat energy that would generate by the active electronic component or device.
Heat PipeA closed vessel in which a continuing cycle of evaporation and condensation of a fluid takes place. It is designed to transporting large amount of heat from one end to the other end efficiently.
Heat SinkA substance or device that absorbs or dissipates heat via free or force convection.
ManometerA device used to measure pressure.
Operational TemperatureFor heat pipe, it is the mean temperature of the heat pipe when operating.
Pressure TransducerA sensor that converts pressure into an analog electrical signal.
Strain GaugeA sensor that converts force, pressure, tension, weight, etc, into a change in electrical resistance which can then be measured.
Thermal ConductivityThe thermal property of a material to conduct heat.
Thermal ResistanceA measurement of a temperature difference by which an object or material resists a heat flow.
ThermocouplesA bi-metal wires that generates the electrical potential (in uV) when there is the temperature difference occurred. This physics phenomena calls Seebeck effect. The potential can be used to interpret to a temperature reading.
Wind TunnelA tool used to study the effects of air moving past solid objects.
Conduction Heat TransferConduction Heat Transfer occurs when two objects at different temperatures are in contact with each other. Heat flows from the warmer to the cooler object until they are both at the same temperature.
Convection Heat TransferUsually the most efficient way to transfer heat, Convection Heat Transfer occurs when warmer areas of a liquid or gas rise to cooler areas in the liquid or gas. As this happens, cooler liquid or gas takes the place of the warmer areas which have risen higher. This cycle results in a continuous circulation pattern and heat is transferred to cooler areas.
Convection Heat Transfer CoefficientA quantitative characteristic of convective heat transfer between a fluid medium and the surface flowed over by the fluid.
Radiation Heat TransferRadiation Heat Transfer is a method of heat transfer that does not rely upon any contact between the heat source and the heated object. Heat can be transmitted though empty space by thermal radiation. No mass is exchanged and no medium is required.
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