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Fluid temperature   satisfying the following condition: 

T_{\rm inv} \cdot \alpha_V(T_{\rm inv}) = 1

 where

Thermal expansion coefficient


The Fluid above Inversion Temperature  has negative Joule–Thomson coefficient   and hence will be cooling under expansion ().

The Fluid below Inversion Temperature  has positive Joule–Thomson coefficient   and hence will be warming under expansion ().

See also


Physics / Thermodynamics / Thermodynamic process Adiabatic Process / Throttling process

Joule–Thomson coefficient ]