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

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  • Kashif Irshad

    (Interdisciplinary Research Center for Renewable Energy and Power Systems, King Fahd University of Petroleum & Minerals, Dhahran 31261, Saudi Arabia)

Abstract

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.

Suggested Citation

  • Kashif Irshad, 2021. "Performance Improvement of Thermoelectric Air Cooler System by Using Variable-Pulse Current for Building Applications," Sustainability, MDPI, vol. 13(17), pages 1-13, August.
    • Handle: RePEc:gam:jsusta:v:13:y:2021:i:17:p:9682-:d:624218
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    References listed on IDEAS

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    Cited by:

    1. Mohadeseh Seyednezhad & Hamidreza Najafi & Benjamin Kubwimana, 2021. "Numerical and Experimental Investigation of a Thermoelectric-Based Radiant Ceiling Panel with Phase Change Material for Building Cooling Applications," Sustainability, MDPI, vol. 13(21), pages 1-17, October.

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