Analysis and modeling of effective temperature differences and electrical parameters of thermoelectric generators

Research output: Contribution to journalArticle

51 Citations (Scopus)

Abstract

We have derived an analytic model describing the interior temperature difference as a function of the load current of a thermoelectric generator (TEG); we have also proposed a method to extract the intrinsic and extrinsic Seebeck coefficients and resistances of TEG using experimental current-voltage curves. The decrement of internal temperature difference is almost linearly depending on load current of the TEG. From the experimental results, using a thermoelectric (TE) module with a thermal conductance of 3.52. W/K and a parasitic thermal conductance of 50. W/K, the effective internal electrical resistance was increased by approximately 5%, but the effective Seebeck coefficient was attenuated by approximately 13%, as compared to the intrinsic parameters. The relationship between the output power reduction factor and limited thermal conductance of TEG packaging was also derived. Approximately 25% of the maximum output power is lost because of the parasitic thermal resistance of the TE module used in the experiment.

Original languageEnglish
Pages (from-to)1458-1463
Number of pages6
JournalApplied Energy
Volume102
DOIs
Publication statusPublished - 2013 Jan 1

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Seebeck coefficient
modeling
Acoustic impedance
temperature
Heat resistance
Temperature
Packaging
experiment
Electric potential
Hot Temperature
parameter
analysis
Experiments
packaging
method

All Science Journal Classification (ASJC) codes

  • Building and Construction
  • Energy(all)
  • Mechanical Engineering
  • Management, Monitoring, Policy and Law

Cite this

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abstract = "We have derived an analytic model describing the interior temperature difference as a function of the load current of a thermoelectric generator (TEG); we have also proposed a method to extract the intrinsic and extrinsic Seebeck coefficients and resistances of TEG using experimental current-voltage curves. The decrement of internal temperature difference is almost linearly depending on load current of the TEG. From the experimental results, using a thermoelectric (TE) module with a thermal conductance of 3.52. W/K and a parasitic thermal conductance of 50. W/K, the effective internal electrical resistance was increased by approximately 5{\%}, but the effective Seebeck coefficient was attenuated by approximately 13{\%}, as compared to the intrinsic parameters. The relationship between the output power reduction factor and limited thermal conductance of TEG packaging was also derived. Approximately 25{\%} of the maximum output power is lost because of the parasitic thermal resistance of the TE module used in the experiment.",
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Analysis and modeling of effective temperature differences and electrical parameters of thermoelectric generators. / Kim, Shiho.

In: Applied Energy, Vol. 102, 01.01.2013, p. 1458-1463.

Research output: Contribution to journalArticle

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