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Technology evolution, from the constructal law: Heat transfer designs

Publication ,  Journal Article
Bejan, A; Errera, MR
Published in: International Journal of Energy Research
June 10, 2015

People like to say that we cannot witness evolution because it occurred over a timescale immensely greater than human experience. Here, we show that it is possible to witness, explain, and predict evolution by focusing on technology evolution. We review the evolution of heat transfer devices from the point of view of the constructal law of design and evolution in nature. This is a broad view of the evolution where organs (components) are not stand-alone devices but play an important role in the 'live' finite-size systems that incorporate them. The larger systems can be human made or natural beings in which overall organization evolved, and continues to evolve. We show that heat transfer technology evolves predictably toward compactness, heat transfer augmentation, lower friction, and lower pumping power expenditure. These features are often misunderstood as 'competitors' in the design process, while in fact they are 'collaborators' from the perspective of the whole system that moves mass over the surface of the earth. Constructal law predicts that the characteristic size of the organ shifts toward lower thermodynamic imperfection and smaller sizes. In time, complexity increases predictably as larger numbers of high-density heat flux components become interconnected in finite-size constructs.

Duke Scholars

Published In

International Journal of Energy Research

DOI

EISSN

1099-114X

ISSN

0363-907X

Publication Date

June 10, 2015

Volume

39

Issue

7

Start / End Page

919 / 928

Related Subject Headings

  • Energy
  • 4008 Electrical engineering
  • 0913 Mechanical Engineering
  • 0906 Electrical and Electronic Engineering
  • 0904 Chemical Engineering
 

Citation

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MLA
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Bejan, A., & Errera, M. R. (2015). Technology evolution, from the constructal law: Heat transfer designs. International Journal of Energy Research, 39(7), 919–928. https://doi.org/10.1002/er.3262
Bejan, A., and M. R. Errera. “Technology evolution, from the constructal law: Heat transfer designs.” International Journal of Energy Research 39, no. 7 (June 10, 2015): 919–28. https://doi.org/10.1002/er.3262.
Bejan A, Errera MR. Technology evolution, from the constructal law: Heat transfer designs. International Journal of Energy Research. 2015 Jun 10;39(7):919–28.
Bejan, A., and M. R. Errera. “Technology evolution, from the constructal law: Heat transfer designs.” International Journal of Energy Research, vol. 39, no. 7, June 2015, pp. 919–28. Scopus, doi:10.1002/er.3262.
Bejan A, Errera MR. Technology evolution, from the constructal law: Heat transfer designs. International Journal of Energy Research. 2015 Jun 10;39(7):919–928.
Journal cover image

Published In

International Journal of Energy Research

DOI

EISSN

1099-114X

ISSN

0363-907X

Publication Date

June 10, 2015

Volume

39

Issue

7

Start / End Page

919 / 928

Related Subject Headings

  • Energy
  • 4008 Electrical engineering
  • 0913 Mechanical Engineering
  • 0906 Electrical and Electronic Engineering
  • 0904 Chemical Engineering