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Revealing the dynamic cooling characteristics of thermoelectric cooler under periodic current input.

Auteurs : LUO D., ZHANG H., CHENG L., PAN J., WANG K., ZHANG P., CHEN H.

Type d'article : Article de la RIF

Résumé

Pulsed current excitation, particularly periodic pulse excitation, has attracted increasing attention in recent years due to its potential to enhance the transient cooling performance of thermoelectric coolers (TECs). In this numerical study, a transient electro-thermal coupled numerical model is developed to investigate the dynamic
cooling characteristics of a TEC under periodic current excitation. In addition, an auxiliary time-averaged material- level indicator, ZTta, is used to assist in interpreting the transient thermoelectric response. Based on the validated numerical model, the effects of pulse parameters, including waveform, amplitude, cycle period, duty
cycle, and initial current, on the transient cooling behavior are systematically analyzed. The results indicate that compared with steady-state current operation, periodic pulse excitation significantly improves transient cooling performance, especially by reducing temperature overshoot and prolonging the cooling duration. By optimizing the pulse parameters—namely a cycle period of 8 s, a duty cycle of 50%, and an amplitude 2.5 times the operating current using a t2-type waveform—the cold-side temperature is substantially reduced while maintaining low overshoot levels. Moreover, it is observed that when the semiconductor width is set to 2.0 mm, the transient ZTta increases by 5% compared to the steady-state value, further validating the effectiveness of pulse xcitation in improving TEC cooling performance. Based on these findings, a set of optimization guidelines for structural design and pulse parameters under cyclic excitation is proposed, providing a theoretical basis for enhancing TEC performance in practical applications.

Documents disponibles

Format PDF

Pages : 11 p.

Disponible

  • Prix public

    20 €

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    Gratuit

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Détails

  • Titre original : Revealing the dynamic cooling characteristics of thermoelectric cooler under periodic current input.
  • Identifiant de la fiche : 30035289
  • Langues : Anglais
  • Sujet : Technologie
  • Source : International Journal of Refrigeration - Revue Internationale du Froid - vol. 189
  • Date d'édition : 09/2026
  • DOI : http://dx.doi.org/https://doi.org/10.1016/j.ijrefrig.2026.107030

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