Entropy generation in a high temperature superconducting current lead

D. P. Sekulic; Z. Uzelac; F. J. Edeskuty

doi:10.1016/0011-2275(92)90330-D

Entropy generation in a high temperature superconducting current lead

D. P. Sekulic, Z. Uzelac, F. J. Edeskuty

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

4 Scopus citations

Abstract

The minimization of entropy generation has been used as a convenient thermal design tool in predicting the optimal temperature distribution in a cryogenic current lead. A vapour-cooled lead with non-ideal cooling has been modelled by a set of non-linear differential equations with corresponding boundary conditions. Highly non-linear temperature dependent thermophysical properties, typical for a high temperature superconducting YBCO compound, have been incorporated in a current lead model. Numerically obtained current lead temperature profiles have been used to calculate entropy generation within the lead as a function of the relevant physical and operational parameters. It has been shown that with respect to thermodynamic irreversibility as an objective function, in both resistive and superconducting modes of operation, there is an optimal thermal design.

Original language	English
Pages (from-to)	1154-1161
Number of pages	8
Journal	Cryogenics
Volume	32
Issue number	12
DOIs	https://doi.org/10.1016/0011-2275(92)90330-D
State	Published - 1992

Bibliographical note

Funding Information:
This work has been supported by the US-Yugoslav Joint Fund for Scientific and Technological Cooperation in cooperation with the US Department of Energy, under Grant JF-DOE-818.

Keywords

current leads
high T superconductors
optimal thermal design

ASJC Scopus subject areas

General Materials Science
General Physics and Astronomy

Access to Document

10.1016/0011-2275(92)90330-D

Cite this

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title = "Entropy generation in a high temperature superconducting current lead",

abstract = "The minimization of entropy generation has been used as a convenient thermal design tool in predicting the optimal temperature distribution in a cryogenic current lead. A vapour-cooled lead with non-ideal cooling has been modelled by a set of non-linear differential equations with corresponding boundary conditions. Highly non-linear temperature dependent thermophysical properties, typical for a high temperature superconducting YBCO compound, have been incorporated in a current lead model. Numerically obtained current lead temperature profiles have been used to calculate entropy generation within the lead as a function of the relevant physical and operational parameters. It has been shown that with respect to thermodynamic irreversibility as an objective function, in both resistive and superconducting modes of operation, there is an optimal thermal design.",

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author = "Sekulic, {D. P.} and Z. Uzelac and Edeskuty, {F. J.}",

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T1 - Entropy generation in a high temperature superconducting current lead

AU - Sekulic, D. P.

AU - Uzelac, Z.

AU - Edeskuty, F. J.

N1 - Funding Information: This work has been supported by the US-Yugoslav Joint Fund for Scientific and Technological Cooperation in cooperation with the US Department of Energy, under Grant JF-DOE-818.

PY - 1992

Y1 - 1992

N2 - The minimization of entropy generation has been used as a convenient thermal design tool in predicting the optimal temperature distribution in a cryogenic current lead. A vapour-cooled lead with non-ideal cooling has been modelled by a set of non-linear differential equations with corresponding boundary conditions. Highly non-linear temperature dependent thermophysical properties, typical for a high temperature superconducting YBCO compound, have been incorporated in a current lead model. Numerically obtained current lead temperature profiles have been used to calculate entropy generation within the lead as a function of the relevant physical and operational parameters. It has been shown that with respect to thermodynamic irreversibility as an objective function, in both resistive and superconducting modes of operation, there is an optimal thermal design.

AB - The minimization of entropy generation has been used as a convenient thermal design tool in predicting the optimal temperature distribution in a cryogenic current lead. A vapour-cooled lead with non-ideal cooling has been modelled by a set of non-linear differential equations with corresponding boundary conditions. Highly non-linear temperature dependent thermophysical properties, typical for a high temperature superconducting YBCO compound, have been incorporated in a current lead model. Numerically obtained current lead temperature profiles have been used to calculate entropy generation within the lead as a function of the relevant physical and operational parameters. It has been shown that with respect to thermodynamic irreversibility as an objective function, in both resistive and superconducting modes of operation, there is an optimal thermal design.

KW - current leads

KW - high T superconductors

KW - optimal thermal design

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Entropy generation in a high temperature superconducting current lead

Abstract

Bibliographical note

Keywords

ASJC Scopus subject areas

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