What is adiabatic?

  • (adj): Occurring without loss or gain of heat.
    Example: "Adiabatic expansion"

Adiabatic

An adiabatic process is any process occurring without input or output of heat within a system (i.e. during the process the system is thermodynamically isolated- there is no heat transfer with the surroundings). This is the opposite of a diabatic process, where there is heat transfer. A key concept in thermodynamics, many rapid chemical and physical processes are described or approximated in this way. Such processes are usually followed or preceded by events that do involve heat transfer (i.e. are non-adiabatic). Examples include electron-transfer.

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Some articles on adiabatic:

Adiabatic Flame Temperature
... In the study of combustion, there are two types of adiabatic flame temperature depending on how the process is completed, constant volume and constant pressure, describing the temperature the combustion products ... The constant volume adiabatic flame temperature is the temperature that results from a complete combustion process that occurs without any work, heat transfer or changes in ... The constant pressure adiabatic flame temperature is the temperature that results from a complete combustion process that occurs without any heat transfer or changes in kinetic or ...
Adiabatic Conductivity
... Adiabatic conductivity is a measure of a material's electrical conductivity, σ, under thermodynamically adiabatic conditions ...
Atmospheric Thermodynamics - Overview
... conservation, the ideal gas law, specific heat capacities, adiabatic processes (in which entropy is conserved), and moist adiabatic processes ...
Adiabatic - Graphing Adiabats
... The isotherms are the red curves and the adiabats are the black curves.. ...
Adiabatic Circuit
... Adiabatic circuits are low power circuits which use "reversible logic" to conserve energy ... which dissipate energy during switching, adiabatic circuits attempt to conserve charge by following two key rules Never turn on a transistor when there is a voltage potential ...