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Tutorial ES8—Caloric Materials and Devices

Monday, April 17
1:30 pm – 5:00 pm
PCC North, 200 Level, Room 226 B

Instructors

  • Mehmet Acet, Universitat Duisburg-Essen
  • Andrew Rowe, University of Victoria

Schedule

1:30 pm – 3:00 pm—Part I: Mehmet Acet

The first part of the tutorial provided a general introduction to caloric effects and caloric materials. It showed that giant caloric effects occur in the vicinity of phase transitions. Results were illustrated for giant magnetocaloric and mechanocaloric materials. Finally the relevance of dissipative effects and hysteresis were considered.

3:00 pm – 3:30 pm—Break

3:30 pm – 5:00 pm—Part II: Andrew Rowe

The second part of the tutorial reviewed key principles governing the use of caloric materials in heat engines and heat pumps. A simplified analytic framework was presented and used to estimate performance of an active caloric regenerator cycle. Loss mechanisms were described and trade-offs between shape, size, operating frequency and matrix properties were quantified. Performance metrics relating material properties and operating conditions to cost were presented.