Numerical analysis for transient supercooling effect of pulse current shapes on a two-stage thermoelectric cooler

Gao, Yan-Wei; Shi, Congling; Wang, Xiao‐Dong

doi:10.1016/j.applthermaleng.2019.114416

Cited by 27 publications

(3 citation statements)

References 43 publications

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“…In this way, a time extension of 50-60 µs was achieved, and the chip was able to process more work events. Gao et al [18] proposed a two-stage thermoelectric model and compared its cooling performance with the corresponding one-stage TEC. The results showed that by adjusting the amplitude and duration of the impulse current of the cold and hot side, an obviously better performance compared to that of the corresponding one-stage could be obtained.…”

Section: Introductionmentioning

confidence: 99%

The Transient Cooling Performance of a Compact Thin-Film Thermoelectric Cooler with Horizontal Structure

Ming,

Liu,

Zhang

et al. 2023

Energies

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Thermoelectric cooling is an ideal solution for chip heat dissipation due to its characteristics of no refrigerant, no vibration, no moving parts, and easy integration. Compared with a traditional thermoelectric device, a thin-film thermoelectric device significantly improves the cooling density and has tremendous advantages in the temperature control of electronic devices with high-power pulses. In this paper, the transient cooling performance of a compact thin-film thermoelectric cooler with a horizontal structure was studied. A 3D multi-physics field numerical model with the Thomson effect considered was established. And the effects of impulse current, thermoelectric leg length, pulse current imposition time, and the size of the contact thermal resistance on the cooling performance of the device were comprehensively investigated. The results showed that the model achieved an active cooling temperature difference of 25.85 K when an impulse current of 0.26 A was imposed. The longer the length of the thermoelectric leg was, the more unfavorable it was to the chip heat dissipation. Due to the small contact area between different sections of the device, the effect of contact thermal resistance on the cooling performance of the device was moderate.

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Section: Introductionmentioning

confidence: 99%

The Transient Cooling Performance of a Compact Thin-Film Thermoelectric Cooler with Horizontal Structure

Ming,

Liu,

Zhang

et al. 2023

Energies

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“…The Peltier cooling causes a rapid decrease in temperature during pulse operation and TEC attains its lower temperature. Following that, the temperature on the cold side of the TEC rises to its maximum value, which is referred to as the overshoot temperature due to Joule heat [22]. Finally, the temperature eventually recovers to its steady-state value after a certain period of time.…”

Section: Introductionmentioning

confidence: 99%

Performance Improvement of Thermoelectric Air Cooler System by Using Variable-Pulse Current for Building Applications

Irshad

2021

Sustainability

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The thermoelectric air conditioning system (TE-AC) is a small, noiseless alternative to standard vapor compression refrigeration (VCR) systems. The cooling characteristics of a TE-AC system operating under two conditions, i.e., steady current and current pulses, are investigated in this study. This system consists of three thermoelectric modules, a heat sink, and an air circulation fan. The result shows that maximum temperature reduction in cooling side of TE-AC system was achieved at 6 A input current under steady state operation. The optimum performance of the TE-AC system under steady state operation depends upon the combined effect of the cooling load, Joule, Fourier, and Peltier heat. In TE-AC pulse operation, both current width and cooling load applied on the cold side of the thermoelectric module (TEMs) play an important role in achieving optimum cooling performance of the system. When normal input current operation (i.e., no current pulse) was compared to pulse-operated TE-AC system operation, it was found that pulse operation provides an additional average temperature reduction of 3–4 °C on the cold side of TEMs. Although on the hot side, it maintains a temperature in the range of 18 °C to 24 °C to reduce overshoot heat flux. The duration of operation is also important in determining pulse width and pulse amplitude. Minimum and overshoot peak temperature rises during each cycle for longer run operation. In the TE-AC system, the accumulated Joule heat during a current pulse frequently causes a temperature overshoot, which lasts much longer. As a result, the next current pulse was not released until the temperature of TE was restored to its initial value.

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“…The trapezoidal‐shaped legs improve the heat transfer between the cold and hot sides of the annular TE generator, and flexibility can improve the reliability of materials. [ 35–39 ] This work demonstrates large‐scale dense annular radial TE leg structures based on screen printing methods. A massive number of TE legs are integrated into an exceedingly small space, achieving significant temperature differences.…”

Section: Introductionmentioning

confidence: 99%

High‐Performance Micro‐Radioisotope Thermoelectric Generator with Large‐Scale Integration of Multilayer Annular Arrays through Screen Printing and Stacking Coupling

et al. 2021

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Small distributed scientific monitoring equipment is an advanced concept in deep space exploration that requires a special power system. A micro‐radioisotope thermoelectric (TE) generator has the advantages of being of small volume, lightweight, and having a long life, which is regarded as the first choice. An annular radial TE conversion structure integrating 30 TE legs in 8.8 cm3 is designed, and a satisfactory temperature difference of 188.4 K is demonstrated. The p‐type Sb2Te3 and n‐type Bi2Te2.7Se0.3 TE thick films are prepared by screen printing, and Seebeck coefficients are 142.4 and −179.8 μV K−2, respectively. By serial–parallel stacking, modular single‐layer devices are effectively integrated on a large scale. The 900 TE legs are integrated into 15.86 cm3, which can provide a high voltage output of up to 13.2 V. When an electric heating source that simulates 3PuO2 is loaded, an open circuit voltage of 3.84 V and a maximum power of 1.26 mW can be obtained. As a demonstration, a prototype to drive a wireless sensor network is used. In the future, this kind of independent power source is expected to become a help for small autonomous and distributed scientific instruments.

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Numerical analysis for transient supercooling effect of pulse current shapes on a two-stage thermoelectric cooler

Cited by 27 publications

References 43 publications

The Transient Cooling Performance of a Compact Thin-Film Thermoelectric Cooler with Horizontal Structure

The Transient Cooling Performance of a Compact Thin-Film Thermoelectric Cooler with Horizontal Structure

Performance Improvement of Thermoelectric Air Cooler System by Using Variable-Pulse Current for Building Applications

High‐Performance Micro‐Radioisotope Thermoelectric Generator with Large‐Scale Integration of Multilayer Annular Arrays through Screen Printing and Stacking Coupling

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