A novel super-cooling enhancement method for a two-stage thermoelectric cooler using integrated triangular-square current pulses

Jing-Hui Meng, Hao-Chi Wu, De-Yang Gao, Zhang Kai, Gui Lu and Wei-Mon Yan

Energy, 2021, vol. 217, issue C

Abstract: In this work, a novel concept of continuous cooling has been proposed to enhance the super-cooling performance of a two-stage thermoelectric cooler, in which integrated triangular-square pulses are used with their modes separately controlled in the upper and lower stages. The 3-dimensionl modeling of the thermoelectric cooler is developed to simulate the super-cooling performance. The non-dominated Sorting Genetic Algorithm II (NSGA-II) is adopted to perform the multi-parameters optimization of pulses forms, in which twelve influencing parameters including pulse amplitude and width, several time constants such as the interval time and input time of pulses are selected as the searching variables, and maximum effective cooling zone with minimum overshoot temperature is set as the multi-objective function. The optimal designs are proved to be better in super-cooling performance for both constant and variable leg cross-sectional area, owing to their well mutual cooperation of the upper and lower stage pulses. Compared to the conventional design with completely identical imposed current form, the effective cooling zone can be improved up to 72.41% by the optimal design when the cooling load is fixed at 0 kW m-2, and the corresponding temperature overshoot can be decreased by 56.48% from 20.29 K to 8.83 K.

Keywords: Thermoelectric cooler; Super-cooling; Performance improvement; Multi-objective; Optimization (search for similar items in EconPapers)
Date: 2021
References: View references in EconPapers View complete reference list from CitEc
Citations: View citations in EconPapers (4)

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Persistent link: https://EconPapers.repec.org/RePEc:eee:energy:v:217:y:2021:i:c:s0360544220324671

DOI: 10.1016/j.energy.2020.119360

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