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Numerical study on coupled heat and mass transfers in an adsorber with external fluid heating.

Author(s) : SUN L. M., BEN-AMAR N., MEUNIER F.

Type of article: Article

Summary

Numerical investigations are made for two adsorbent-adsorbate pairs: zeolite 13X-water and 13X-ammonia, whose operating pressures are considerably different. For the 13X-water pair, the dynamics of the adsorber can be significantly limited by the mass transfer inside the adsorbent bed, when its dimension is large. The poor mass transfer can lead to very large pressure variations and small adsorbed or desorbed quantities, making the heat pump process ineffective. Conversely, the zeolite-ammonia pair operates at much higher pressures (several bars) and the corresponding pressure variations in the bed are, in general, negligible. In this case, the limitation by mass transfer can be neglected and the uniform-pressure assumption is acceptable.

Details

  • Original title: Numerical study on coupled heat and mass transfers in an adsorber with external fluid heating.
  • Record ID : 1995-3531
  • Languages: English
  • Source: Heat Recov. Syst. CHP - vol. 15 - n. 1
  • Publication date: 1995/01

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