Entropy generation minimization of combined heat and mass transfer devices
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4-26-2010_entropy_minimization .pdf
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1.69 MB
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Checksum (MD5)
55a2cee8a21b2070eca598ae9d8c1052
Author(s)
Lienhard, John H.
Zubair, Syed M.
Narayan, G. Prakash
Date Issued
June 2010
Journal
International Journal of Thermal Sciences
Publisher
Elsevier
Citation
Prakash Narayan, G., John H. Lienhard, and Syed M. Zubair. “Entropy Generation Minimization of Combined Heat and Mass Transfer Devices.” International Journal of Thermal Sciences 49, no. 10 (October 2010): 2057–2066.
Version
Author's final manuscript
Abstract
This paper details a simple procedure by which the entropy generation in simultaneous heat and mass exchange devices can be minimized. Effectiveness for these devices is defined and a new parameter, ‘modified heat capacity rate ratio’ is introduced. It is found that the entropy generation of a combined heat and mass exchange device is minimized (at constant value of effectiveness) when the modified heat capacity rate ratio is equal to one irrespective of the value of other independent parameters. Several typical examples of the cooling towers have been studied to illustrate this concept. A practical application of the concept is also illustrated using a humidification–dehumidification desalination system.
MIT Department
Massachusetts Institute of Technology. Department of Mechanical Engineering
Terms of Use
Creative Commons Attribution-NonCommercial-NoDerivs License
Persistent DSpace Link
DOI of Published Version
https://doi.org/10.1016/j.ijthermalsci.2010.04.024
