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Experimental determination of flow and heat transfer correlations for passive regenerators.

Author(s) : KNAUF S., NELLIS G., KLEIN S.

Summary

Active magnetic regenerative refrigeration (AMRR) systems are being considered as an environmentally friendly alternative to vapour compression refrigeration cycles. AMRR systems use solid refrigerants rather than a synthetic working fluid. With the use of an environmentally safe heat transfer fluid, such as water or a water propylene glycol solution, the ozone depletion potential and global warming potential for AMRR is essentially negligible. Further optimization of AMRR systems is required in order for them to become an economically attractive and viable substitute for current air conditioning and refrigeration units. Much of this optimization is focused on the regenerator matrix geometry and the thermal-fluid behaviour of the packed bed of magnetocaloric material. As part of this effort, a passive single-blow test facility has been developed at the University of Wisconsin-Madison in order to measure the friction factor and the Nusselt number under conditions that are appropriate for AMRR systems.

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Details

  • Original title: Experimental determination of flow and heat transfer correlations for passive regenerators.
  • Record ID : 2011-0194
  • Languages: English
  • Publication date: 2010/07/12
  • Source: Source: Proc. 2010 int. Refrig. Air Cond. Conf., Purdue Univ.
    n. 2176; 8 p.; fig.; tabl.; 9 ref.

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