Abstract
This work explores the use of thermo-acoustic
coolers as alternative technology for refrigeration. A valid
experimental evidence on the influence of the geometry of the
honeycomb ceramic stack on the performance of thermosacoustic
refrigerators is described. Sixteen cordierite honeycomb
ceramic stacks with square cross sections having four different
lengths of 26 mm, 48 mm, 70 mm and 100 mm are considered.
Measurements are taken at six different locations of the stack hot
ends from the pressure antinode, namely 100 mm, 200 mm, 300
mm, 400 mm, 500 mm and 600 mm respectively. Measurement
of temperature difference across the stack ends at steady state for
different stack geometries are used to measure the performance
of the device. The results with atmospheric air demonstrates the
influence of the stack geometry on the cooling power and shows
that some its geometrical parameters are interdependent.