1. Cryogentic Refrigeration(Freezing) Andrew Willenborg

2. Cryogenics “The production of freezing cold” Below 123 K After refrigeration Originally the process Behavior of Materials Substances used: Liquid nitrogen Liquid helium Carbon dioxide More resistance to wear Stronger and more durable Preservation of organic materials

3. NASA Lightweight, High Efficiency Cryocooler Interested in space applications Advanced Cryogenic Fluid Management technology Propulsion systems Liquid hydrogen Zero boil off Liquid hydrogen at 20 K High efficiency and reliability Nov 18, two cryofreezers sent to ISS Biological research

4. Cryogenic Devices Stirling Cryocooler– Works in reverse as a heat pump Cryo-Torr cryogenic pump Transport of liquid

5. Other cryogenic topics Cryogenic compressor High pressure helium Cryogenic hardening Martensite Cryogenic deflashing Remove mold flash Superconductors Zero resistivity Conservation biology Freeze animals

6. Cryonics The freezing of people Must be pronounced dead Ted Williams

7. References http://www.boc- gases.com/products_and_services/by_process/cryogenic_chilling_and_freezi ng.asphttp://www.boc- gases.com/products_and_services/by_process/cryogenic_chilling_and_freezi ng.asp http://en.wikipedia.org/wiki/Cryogenics http://www.nasa.gov/centers/ames/research/technology- onepagers/cryogenic-fluid-management.htmlhttp://www.nasa.gov/centers/ames/research/technology- onepagers/cryogenic-fluid-management.html http://www.youtube.com/watch?v=Vhy5kwLmKdQ http://www.youtube.com/watch?v=bCVLe_fUbpQ