Skip to main content

Entropy generation minimization in parallel-plates counterflow heat exchangers

Publication ,  Journal Article
Ordonez, JC; Bejan, A
Published in: International Journal of Energy Research
2000

This paper shows that the main architectural features of a counterflow heat exchanger can be determined based on thermodynamic optimization subject to volume constraint. It is assumed that the channels are formed by parallel plates, the two fluids are ideal gases, and the flow is fully developed, laminar or turbulent. In the first part of the paper, it is shown that the irreversibility of the heat exchanger core is minimized with respect to (1) the ratio of the two-channel spacings, and (2) the total heat transfer area between the two streams. In the second part, the entropy generation rate also accounts for the irreversibility due to discharging the spent hot stream into the ambient. It is shown that the design can be optimized with respect to (1), (2) and (3) the ratio of the capacity rates of the two streams. The optimized features of the geometry are robust with respect to whether the external discharge irreversibility is included in the entropy generation rate calculation.

Duke Scholars

Published In

International Journal of Energy Research

DOI

Publication Date

2000

Volume

24

Issue

10

Start / End Page

843 / 864

Related Subject Headings

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

Citation

APA
Chicago
ICMJE
MLA
NLM
Ordonez, J. C., & Bejan, A. (2000). Entropy generation minimization in parallel-plates counterflow heat exchangers. International Journal of Energy Research, 24(10), 843–864. https://doi.org/10.1002/1099-114X(200008)24:103.0.CO;2-M
Ordonez, Juan Carlos, and Adrian Bejan. “Entropy generation minimization in parallel-plates counterflow heat exchangers.” International Journal of Energy Research 24, no. 10 (2000): 843–64. https://doi.org/10.1002/1099-114X(200008)24:103.0.CO;2-M.
Ordonez JC, Bejan A. Entropy generation minimization in parallel-plates counterflow heat exchangers. International Journal of Energy Research. 2000;24(10):843–64.
Ordonez, Juan Carlos, and Adrian Bejan. “Entropy generation minimization in parallel-plates counterflow heat exchangers.” International Journal of Energy Research, vol. 24, no. 10, 2000, pp. 843–64. Manual, doi:10.1002/1099-114X(200008)24:103.0.CO;2-M.
Ordonez JC, Bejan A. Entropy generation minimization in parallel-plates counterflow heat exchangers. International Journal of Energy Research. 2000;24(10):843–864.

Published In

International Journal of Energy Research

DOI

Publication Date

2000

Volume

24

Issue

10

Start / End Page

843 / 864

Related Subject Headings

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