The construction and performance Investigation of 1/2 Wavelength Thermoacoustic Refrigerator with Helium Refrigerant

헬륨을 냉매로 사용한 1/2파장 열음향 냉동기의 실험 및 성능평가

  • Choi, Doo-Won (Department of Refrigeration & Air conditioning Engineer, Graduate School of Korea Maritime University) ;
  • Kim, Dong-Hyuk (Department of Refrigeration & Air conditioning Engineer, Graduate School of Korea Maritime University)
  • 최두원 (한국해양대학교 냉동공조공학과) ;
  • 김동혁 (한국해양대학교 냉동공조공학과)
  • Published : 2006.06.21

Abstract

Thermoacoustic refrigerators are operated with acoustic power to pump heat. The acoustic standing wave displaces the gas In the channels of the stack while compressing and expanding. The thermal interaction between the osillating gas he surface of the stack generates an acoustic heat pumping. in this study, a thermoacoustic refrigerator is composed of a resonator of 4cm diameter, stack of plates, heat exchangers and cooling part. Length of the hot heat exchangers, the stack of plates and the cold heat exchanger are 9mm, 8mm and 6mm respectively. Using helium as a coolant at frequency of 516Hz, the cold-part temperature of exchanger fell to $-19.0^{\circ}C$ after 1hours.

Keywords