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Thesis: Exploring the geometry and performance of cryocooler re-condenser designs.

Dan Schick M.S. Graduate Student Mechanical Engineering Room: 1335 ERB Email: dschick@wisc.edu Hometown: Oconomowoc, WI. Thesis: Exploring the geometry and performance of cryocooler re-condenser designs. Cryocooler Re-condensers. Used to re-condense stored cryogens for

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Thesis: Exploring the geometry and performance of cryocooler re-condenser designs.

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  1. Dan SchickM.S. Graduate StudentMechanical EngineeringRoom: 1335 ERBEmail: dschick@wisc.eduHometown: Oconomowoc, WI Thesis: Exploring the geometry and performance of cryocooler re-condenser designs.

  2. Cryocooler Re-condensers • Used to re-condense stored cryogens for • Superconducting electromagnets: Particle accelerator magnets, MRI, motors, generators, etc. • Cryogen storage depots in space • Helium is the working fluid inside the cryocooler, and the condensing fluid outside the cryocooler • Thermal resistance between cryocooler cold tip and the surrounding helium gas causes inefficiency Cold tip http://www.jwst.nasa.gov/images_cryo2.html

  3. Re-condenser Optimization • Project goals • Minimize thermal resistance • Optimize condensation rate • Geometry and extensions • Determine appropriate geometry to adequately move condensed gas to liquid phase • Investigate influence of surface preparation • Extend condensing surface into the saturated bath? vs.

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