Abstract
The goals of this research are to design and build an optimally efficient heat‐driven thermoacoustic refrigerator to cool a given heat load to a desired temperature. The system uses heat to drive a thermoacoustic prime mover that produces sound for a thermoacoustic refrigerator (as originally investigated by John Wheatley in a device he called a beer cooler on account of the temperatures and heat loads he was striving to obtain). Here, the first step, numerical design, is described. A given system configuration is analyzed using Runge–Kutta integration of three coupled DE’s for ambient temperature, acoustic pressure, and specific acoustic impedance (SAI) in the prime mover and refrigerator and using pressure plus SAI transition equations elsewhere. Complex eigenfrequency analysis is used to obtain starting values for a root finding routine for the systems opening acoustic pressure, hot end temperature, heat load, and frequency. Optimization is used to find a system configuration that maximizes overall eff...
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