isothermal expansion

isothermal expansion

[¦ī·sə¦thər·məl ik′span·chən]
(thermodynamics)
Expansion of a substance while its temperature is held constant.
References in periodicals archive ?
And because you've got this volume of heat exchange fluid, it is isothermal expansion - so it keeps the temperature the same, which is far more efficient.
Heat for isothermal expansion can be harvested from water, air, or a source of waste heat such as a fuel-burning power plant.