Experimental investigation of the performance of a thermoacoustic refrigeration

Abstract

Thermo-Acoustics is a phenomenon that involves the interplay of sound and thermal engines. Its most recent application is in the development of heat engines and pumps/refrigerators. One such occurrence is thermo-acoustic refrigeration, which employs high-intensity sound waves in a pressured gas tube to transport heat from one location to another and generate a cooling effect. In this paper, the design covers stack dimension, acoustic driver selection, and acoustic resonator selection. Acoustic resonator selection, stack dimension and acoustic driver selection are discussed in this paper. The investigation revealed that, the temperature control by thermal acoustics was found to be feasible, but inefficiency was not achieved because of material constraints. For this basic device, we acquired a temperature differential of 3 degrees Celsius. However, based on these constraints, various recommendations for improving the performance of thermoacoustic refrigerators were developed. In experiments, superior materials, such as materials with high heat capacity, and working fluids, such as inert gases, have been shown to improve efficiency.Heat is turned into sound energy in a thermoacoustic engine, and its energy is useful for practical work. By using this device, heat is transferred from a higher-to a lower-temperature sink. The preceding process is reversed by a thermo-acoustic refrigerator, which absorbs heat from a low-temperature medium and rejects it to a high-temperature medium by using acoustic power.