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Constructal geometry and operation of adsorption processes

Publication ,  Journal Article
Rivera-Alvarez, A; Bejan, A
Published in: International Journal of Thermal Sciences
October 1, 2003

This paper shows that the temporal and spatial structure of adsorption-desorption processes can be optimized for maximal packing of mass transfer into a fixed space, and for minimal overall pumping power. In the first part of the paper, simple models demonstrate that the periodicity of such processes can be optimized in three settings: fixed desorption time, variable desorption time, and variable species concentration in the gas space. The second part of the paper shows how the optimized time scales determine the dimensions of the smallest flow channels-the elemental system. The available space can be packed with elemental systems in a hierarchical (constructal) structure [Bejan, Shape and Structure, from Engineering to Nature, Cambridge University Press, 2000], in which elements are assembled into first constructs, first constructs are assembled into second constructs, etc. The robustness and nearly optimal performance of the optimized mass exchanger structure is discussed. © 2003 Éditions scientifiques et médicales Elsevier SAS. All rights reserved.

Duke Scholars

Published In

International Journal of Thermal Sciences

DOI

ISSN

1290-0729

Publication Date

October 1, 2003

Volume

42

Issue

10

Start / End Page

983 / 994

Related Subject Headings

  • Mechanical Engineering & Transports
  • 4017 Mechanical engineering
  • 4012 Fluid mechanics and thermal engineering
  • 0915 Interdisciplinary Engineering
  • 0913 Mechanical Engineering
  • 0102 Applied Mathematics
 

Citation

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Rivera-Alvarez, A., & Bejan, A. (2003). Constructal geometry and operation of adsorption processes. International Journal of Thermal Sciences, 42(10), 983–994. https://doi.org/10.1016/S1290-0729(03)00077-2
Rivera-Alvarez, A., and A. Bejan. “Constructal geometry and operation of adsorption processes.” International Journal of Thermal Sciences 42, no. 10 (October 1, 2003): 983–94. https://doi.org/10.1016/S1290-0729(03)00077-2.
Rivera-Alvarez A, Bejan A. Constructal geometry and operation of adsorption processes. International Journal of Thermal Sciences. 2003 Oct 1;42(10):983–94.
Rivera-Alvarez, A., and A. Bejan. “Constructal geometry and operation of adsorption processes.” International Journal of Thermal Sciences, vol. 42, no. 10, Oct. 2003, pp. 983–94. Scopus, doi:10.1016/S1290-0729(03)00077-2.
Rivera-Alvarez A, Bejan A. Constructal geometry and operation of adsorption processes. International Journal of Thermal Sciences. 2003 Oct 1;42(10):983–994.
Journal cover image

Published In

International Journal of Thermal Sciences

DOI

ISSN

1290-0729

Publication Date

October 1, 2003

Volume

42

Issue

10

Start / End Page

983 / 994

Related Subject Headings

  • Mechanical Engineering & Transports
  • 4017 Mechanical engineering
  • 4012 Fluid mechanics and thermal engineering
  • 0915 Interdisciplinary Engineering
  • 0913 Mechanical Engineering
  • 0102 Applied Mathematics