Affordable Access

Publisher Website

Advances in a 300 Hz thermoacoustic cooler system working within liquid nitrogen temperature range

Authors
Journal
Cryogenics
0011-2275
Publisher
Elsevier
Publication Date
Volume
50
Issue
8
Identifiers
DOI: 10.1016/j.cryogenics.2010.01.018
Keywords
  • High Frequency
  • Standing-Wave Thermoacoustic Heat Engine
  • Pulse Tube Cooler
  • Cooling Power
Disciplines
  • Musicology
  • Physics

Abstract

Abstract With the combined advantages of high reliability, compact size and low electromagnetic interference, a high frequency operating thermoacoustic cooler system, i.e. a pulse tube cooler driven by a thermoacoustic heat engine, is quite promising for space applications. This article introduced a high frequency standing-wave thermoacoustic heat engine-driven pulse tube cooler system working around 300 Hz with axial length being 1.2 m. To improve the thermal efficiency of such system, an optimization has been carried out, both analytically and experimentally, by observing the influence of the dimensions of the stack, the hot buffer length and the acoustic pressure amplifier tube length. So far, a no-load temperature of 68.3 K has been obtained with 4.0 MPa helium and 750 W heating power. With 500 W heating power, a no-load temperature of 76.9 K and 0.2 W cooling power at 80 K have been achieved. Compared with former reports, the performance has been improved.

There are no comments yet on this publication. Be the first to share your thoughts.