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Title: Design of a Wind-Powered Helmholtz Resonance-Driven Thermoacoustic Refrigerator
Authors: Chen, Nick
Advisors: El-Gabry, Lamyaa
Department: Mechanical and Aerospace Engineering
Class Year: 2020
Abstract: This report investigates the design parameters for a thermoacoustic refrigerator that receives power input from a Helmholtz resonator driven by air flow, in lieu of a speaker. Although the actual construction of such a device was unsuccessful largely due to the COVID-19 pandemic, experiments with both thermoacoustic refrigerators and Helmholtz resonators were designed for future work, such that the two systems may eventually be combined into a single device. In addition, two separate systems are simulated using the computer program DeltaEC: a modified Helmholtz resonator by Chen that resonates when placed at the outlet of a wind tunnel, and a thermoacoustic refrigerator built for demonstration purposes by Russell and Weibull. Real-world experimental results from Chen and Russell and Weibull are successfully simulated, and heat stack geometry is optimized using thermoacoustic theory developed by Swift and Rott, producing a 17% increase in temperature difference. A comprehensive guide for optimizing pin array heat stack geometry is developed, and findings from past studies of thermoacoustic theory are compiled and organized for practical research and design purposes.
Type of Material: Princeton University Senior Theses
Language: en
Appears in Collections:Mechanical and Aerospace Engineering, 1924-2020

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