Design and Comparative Analysis of Thermoacoustic Refrigerators

Prashantha, BG and Gowda, MS Govinde and Seetharamu, S and Narasimham, GSVL (2017) Design and Comparative Analysis of Thermoacoustic Refrigerators. In: International Journal of Air-Conditioning and Refrigeration, 25 (01). ISSN 2010-1325

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Abstract

In this paper, the design of a loudspeaker driven 10W cooling power stack-based thermoacoustic refrigerator at 3% drive ratio for a temperature difference of 80K using helium as working fluid is discussed. The refrigerator is designed using linear thermoacoustic concepts. Using linear thermoacoustic equations, a theoretical minimum cold heat exchanger temperature is estimated at 75% porosity of stack-heat exchanger system. This paper focuses on the comparative analysis of the present design with the similar 10W thermoacoustic refrigerator designs found in the literature. The theoretical performance comparison of TSDH, TDH and CDH resonators designed at 2% and 3% drive ratio is discussed. The resonator designs are validated using DeltaEC software and the results are discussed. DeltaEC simulation results show that the diameter of the vibrating diaphragm of the loudspeaker equal to the diameter of the stack-heat exchangers system has higher electroacoustic efficiency (74.7%) and better performance compared to the smaller diaphragm (42.6%) used in the past research.

Item Type:	Journal Article
Publication:	International Journal of Air-Conditioning and Refrigeration
Publisher:	World Scientific Publishing Co. Pte Ltd
Additional Information:	The copyright for this article belongs to the World Scientific Publishing Co.Pte Ltd.
Keywords:	CDH designs; DeltaEC; Drive ratio; TDH; TSDH
Department/Centre:	Division of Mechanical Sciences > Mechanical Engineering
Date Deposited:	14 Jun 2022 06:00
Last Modified:	14 Jun 2022 06:00
URI:	https://eprints.iisc.ac.in/id/eprint/73462

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