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An energy-focused thermoacoustic-Stirling heat engine reaching a high pressure ratio above 1.40

Authors
Journal
Cryogenics
0011-2275
Publisher
Elsevier
Publication Date
Volume
47
Issue
2
Identifiers
DOI: 10.1016/j.cryogenics.2006.12.001
Keywords
  • Thermoacoustic-Stirling Heat Engine
  • Energy-Focused
  • Tapered Resonator
  • Pressure Ratio
  • Onset Temperature
Disciplines
  • Musicology
  • Physics

Abstract

Abstract A new tapered resonator was introduced in the thermoacoustic-Stirling heat engine (TASHE) to explore its potential of achieving higher pressure ratio. With average pressure of 1.5 MPa and heating power of 3 kW, a high pressure ratio above 1.40 was obtained, which is very beneficial to be a powerful driving source of pulse tube cryocoolers or thermoacoustic refrigerators. Moreover, a relatively low onset temperature of 73 °C was also observed that showed the feasibility of its application in the field of using low quality heat sources.

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