Thermoacoustic cooling with no refrigerant

Normah Mohd-Ghazali*, Mahmood Anwar, Nurudin H.M.A. Settar

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

3 Citations (Scopus)

Abstract

The Brundtland Report (also known as Our Common Future) has placed sustainability of energy resources and environmental degradation on a common global agenda. Increasing awareness has spurred much research into alternative clean energy technologies. Thermoacoustic cooling as an environmentally friendly refrigeration system is one of the research areas being pursued. Although not commercially available, successful systems have been completed. There are, however, still many fundamental issues related to the thermoacoustic effects and the associated heat transfer that must be addressed. This paper reports a portable counter-top thermoacoustic cooling apparatus designed and fabricated at the Universiti Teknologi Malaysia (UTM). Based on a standing wave resonator tube, the system with a pvc resonator tube of 60 mm diameter which was initially at 24°C, accomplished cooling effects under a minute, up to 18.5°C, without the use of chlrofluorocarbons (CFCs) or other similar refrigerants which have been known to be hazardaous to our living environment. Another acrylic 110 mm diameter tube once recorded 8°C with the ambient held at 23°C. The cooling in the first system was repeatable but not significant enough for practical applications. However, with no refrigerants used and its relatively simple manufacturing, a thermoacoustic cooling system is a potentially clean cooling system to be further investigated for practical or specific applications.

Original languageEnglish
Pages (from-to)234-241
Number of pages8
JournalInternational Journal of Technology
Volume2
Issue number3
Publication statusPublished - Jul 2011
Externally publishedYes

Keywords

  • Clean technology
  • Portable
  • Resonator
  • Standing wave
  • Thermoacoustic cooling

ASJC Scopus subject areas

  • General Engineering
  • Strategy and Management
  • Management of Technology and Innovation

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