Effect of gas spacing and resonance frequency on theoretical performance of thermoacoustic refrigerators

Abstract In this paper, the design and analysis of 500 W thermoacoustic refrigerators for temperature difference 28 K using helium air are discussed. Helium is best working gas, but chosen to study possibility replacing future cost-effective refrigerator since it much cheaper than helium. Heat work flow equations The models optimized by normalizing parameters Rott’s linear theory. effect gas spacing expressed in terms thermal penetration depth stack-heat exchanger unit at 85% porosity resonance frequency on sheets thickness theoretical performance 200 Hz, 300 400 Hz cooler shows better COP 1.72 1.53 results compared with DeltaEC software results. predicts cooling power 347 1.02 224 0.79 air, respectively.