A compromise between the temperature difference and performance in a standing wave thermoacoustic refrigerator

Abstract

Thermoacoustic refrigeration is an evolving cooling technology in which the acoustic power is used to pump heat. The operating conditions and geometric parameters are important for the thermoacoustic refrigerator performance, as they affect both its performance and the temperature difference across the stack. This paper investigates the effect of the stack geometric parameters and operating conditions on the performance of a standing wave thermoacoustic refrigerator and the temperature difference across the stack. DeltaEC software is used to make the thermoacoustic refrigerator model. From the obtained results, normalised values for the operating conditions andgeometric parameters are collected to compromise both the performance and the temperature difference across the stack. Highlights A theoretical DeltaEC model of a standing wave thermoacoustic refrigerator is built. Compromised values for the geometric parameters and operating conditions are collected. The physical description of the performance and the temperature difference change behaviour are presented.