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Experimental Investigation of Using Phase Change Material as a Cooling Method for a Thermoelectric Generator

Motevalizadeh, Morteza | 2024

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  1. Type of Document: M.Sc. Thesis
  2. Language: Farsi
  3. Document No: 56853 (45)
  4. University: Sharif University of Technology
  5. Department: Aerospace Engineering
  6. Advisor(s): Morad, Mohamad Reza
  7. Abstract:
  8. Global energy consumption is on a trajectory to surge by 50% by 2050, primarily driven by prevailing energy consumption patterns. Consequently, the imperative to innovate and develop novel energy sources, such as the utilization of recycled waste heat, has become paramount for the foreseeable future. In light of this, this paper delves into the transformative potential of employing Phase Change Materials (PCMs) for cooling Thermoelectric Generators (TEGs) and harnessing waste heat for productive purposes. The research investigates three distinct configurations to evaluate the efficacy of PCMs in enhancing thermal management. Configuration 1 exclusively relies on an active cooling fan, while Configuration 2 incorporates a PCM container for passive cooling and an additional TEG atop the container to extract waste heat. Configuration 3 addresses spatial constraints by simultaneously employing a heat pipe and a PCM container in diverse applications. This comprehensive study considers varying input heat fluxes and fan voltages as influential parameters. Additionally, it examines fundamental performance metrics, such as voltage, current generation, and temperature over time, across all configurations. Notably, increasing input heat flux reduces the time required for the thermal system to attain its critical temperature (CT). The inclusion of PCMs, however, extends the time needed for the system to reach a stable temperature. Furthermore, the use of PCMs significantly increases the thermal system's efficiency, resulting in an approximately 25% enhancement at a 5W input heat flux, while also mitigating voltage fluctuations
  9. Keywords:
  10. Thermoelectric Generator ; Phase Change Material (PCMs) ; Efficiency ; Cooling ; Heat Recovery ; Waste Heat ; Heat Losse

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