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

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Presentation on theme: "Joule-Thomson Refrigeration Sam Coogan. Adiabatic Expansion Many ways to have adiabatic expansion – Constant Entropy (Isentropic) – Constant Internal."— Presentation transcript:

1 Joule-Thomson Refrigeration Sam Coogan

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

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

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

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

6 Sources http://www.aero.org http://www.thales-cryogenics.com http://www.wikipedia.org www.cryogenicsinternational.com

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