Applies to a thermodynamic process during which no heat is added to or withdrawn from the body or system concerned In the atmosphere, adiabatic changes of temperature occur only in consequence of compression or expansion accompanying an increase or decrease of atmospheric pressure Thus, a descending body of air undergoes compression and adiabatic cooling
Refers to a process that occurs without the addition or removal of heat This is considered an ideal or theoretical process in which there is absolutely no heat exchange between a gas and its environment However, temperature changes may occur as a result of a change of state of a gas
Without loss or gain of heat to a system An adiabatic change is a change in volume and pressure of a parcel of gas without an exchange of heat between the parcel and its surroundings In reference to a steam turbine, the adiabatic efficiency is the ratio of the work done per pound of steam, to the heat energy released and theoretically capable of transformation into mechanical work during the adiabatic expansion of a unit weight of steam
An adiabatic process is one in which there is no exchange of heat with the surroundings The relationship of pressure and volume when a gas or other fluid is compressed or expanded with no loss or gain of heat In an adiabatic process, compression causes an increase in temperature and expansion a decrease in temperature
this is a way to conduct a process Other ways are isothermal or isobaric and so on A process is said to be adiabatic, if the system does not exchange heat with the surroundings during the process
invariants are quantities associated with approximately periodic motions which almost do not change, and are similarly useful They are important in calculating the way ions and electrons move in a magnetic field