Adiabatic process
Thermodynamic process in which no mass or heat is exchanged with surroundings
Adiabatic process
An adiabatic process (adiabatic from Ancient Greek ἀδιάβατος (adiábatos) 'impassable') is a type of thermodynamic process that occurs without transferring heat between the thermodynamic system and its environment. Unlike an isothermal process, an adiabatic process transfers energy to the surroundings only as work and/or as mass flow. As a key concept in thermodynamics, the adiabatic process supports the theory that explains the first law of thermodynamics. The opposite term to "adiabatic" is diabatic. Some chemical and physical processes occur too rapidly for energy to enter or leave the system as heat, allowing a convenient "adiabatic approximation". For example, the adiabatic flame temperature uses this approximation to calculate the upper limit of flame temperature by assuming combustion loses no heat to its surroundings. In meteorology, adiabatic expansion and cooling of moist air (which can be triggered by winds flowing up and over a mountain, for example) can cause the water-vapor...
Read on Wikipedia · Image Eric Gaba (Sting - fr:Sting), Public domain
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