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Generalized assessment of heat-storage accumulators based on exergy profiles.

Author(s) : HEMZAL K., WURM J.

Summary

No generalized or specialized criteria were available for the effective design of water-type heat accumulators. Therefore, design optimization was carried out analytically, and the resulting approach was experimentally verified. This process led to the development of generalized criteria for rating the efficiency of stored heat utilization and to the development of reservoir design guidelines that, for practical design purposes, eliminated the need for knowing storage temperature histograms. The analysis is based on defining the storage quality as the degree of perfection in terms of the initial and final exergy (available energy) ratios of the stored heat during the storage period. For a specified storage, the "degree of perfection" can then be optimized and the desirable dimensions of a reservoir selected by calculating the characteristic (or normalized) dimension from the Fourier number.

Details

  • Original title: Generalized assessment of heat-storage accumulators based on exergy profiles.
  • Record ID : 1995-1149
  • Languages: English
  • Source: Proceedings of the 1994 International Refrigeration Conference at Purdue.
  • Publication date: 1994/07/19
  • Document available for consultation in the library of the IIR headquarters only.

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