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Joule-Thomson Refrigeration

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

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Joule-Thomson Refrigeration

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  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 (O2, N2, 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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