Joule-Thomson Refrigeration Sam Coogan. Adiabatic Expansion Many ways to have adiabatic expansion – Constant Entropy (Isentropic) – Constant Internal.

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Presentation transcript:

Joule-Thomson Refrigeration Sam Coogan

Adiabatic Expansion Many ways to have adiabatic expansion – Constant Entropy (Isentropic) – Constant Internal Energy (Free Expansion) – Constant Enthalpy (Joule-Thomson)

Joule-Thomson Effect Throttling process reduces pressure Caused by non-idealities Joule-Thomson Coefficient

Why? Cooling at very low temperatures Achievable Cryogenics Short cool down time

Applications Cryogenic Freezing (Cryonics) Gas liquefaction (O 2, N 2, Ar) Linde Technique (Liquefaction of Air)

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