Entropy generation minimization of combined heat and mass transfer devices

G. Prakash Narayan; John H. Lienhard V; Syed M. Zubair

doi:10.1016/j.ijthermalsci.2010.04.024

Entropy generation minimization of combined heat and mass transfer devices

G. Prakash Narayan
, John H. Lienhard V
, Syed M. Zubair

Research output: Contribution to journal › Article › peer-review

157 Scopus citations

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.

Original language	English
Pages (from-to)	2057-2066
Number of pages	10
Journal	International Journal of Thermal Sciences
Volume	49
Issue number	10
DOIs	https://doi.org/10.1016/j.ijthermalsci.2010.04.024
State	Published - Oct 2010

Bibliographical note

Funding Information:
The authors would like to thank the King Fahd University of Petroleum and Minerals for funding the research reported in this paper through the Center for Clean Water and Clean Energy at MIT and KFUPM.

Keywords

Entropy generation minimization
Heat and mass exchangers
Humidification dehumidification desalination

ASJC Scopus subject areas

Condensed Matter Physics
General Engineering

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10.1016/j.ijthermalsci.2010.04.024

Cite this

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title = "Entropy generation minimization of combined heat and mass transfer devices",

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.",

keywords = "Entropy generation minimization, Heat and mass exchangers, Humidification dehumidification desalination",

author = "Narayan, \{G. Prakash\} and \{Lienhard V\}, \{John H.\} and Zubair, \{Syed M.\}",

note = "Funding Information: The authors would like to thank the King Fahd University of Petroleum and Minerals for funding the research reported in this paper through the Center for Clean Water and Clean Energy at MIT and KFUPM. ",

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AU - Lienhard V, John H.

AU - Zubair, Syed M.

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N2 - 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.

AB - 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.

KW - Entropy generation minimization

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JF - International Journal of Thermal Sciences

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ER -

Entropy generation minimization of combined heat and mass transfer devices

Abstract

Bibliographical note

Keywords

ASJC Scopus subject areas

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