Review of investigations in eco-friendly thermoacoustic refrigeration system

Abstract

To reduce greenhouse gas emissions, internationally research and development is intended to improve the performance of conventional refrigeration system also growth of new-fangled refrigeration technology of potentially much lesser ecological impact. This paper gives brief review of research and development in thermoacoustic refrigeration also the existing situation of thermoacoustic refrigeration system. Thermoacoustic refrigerator is a novel sort of energy conversion equipment which converts acoustic power into heat energy by thermoacoustic effect. Thermoacoustic refrigeration is an emergent refrigeration technology in which there are no moving elements or any environmentally injurious refrigerants during its working. The concept of thermoacoustic refrigeration system is explained, the growth of thermoacoustic refrigeration, various investigations into thermoacoustic refrigeration system, various optimization techniques to improve coefficient of performance, different stacks and resonator tube designs to improve heat transfer rate, various gases, and other parameters like sound generation have been reviewed.

The status of refrigeration solutions for last mile vaccine delivery in low-income settings

“…Other refrigeration approaches, including magnetic [66] , [67] and thermoacoustic cooling [68] , [69] , present potential for vaccine storage and transport. However, no prototype or device based on these principles has been found for that application area and such systems are currently grid dependent.…”

Coupled model and flow characteristics of thermoacoustic refrigerators

“…The parameters in the model are shown in table 4. The calculation code consists of BEGIN(0), SURFACE (1,6), CONE(2), DUCT (3,5), SKTLAB(4) and HARDEND (7).…”

“…As thermoacoustic refrigeration eliminates the need for harmful refrigerants, it has become one of the most promising candidates for next-generation refrigeration devices. Another advantage of it is the very small number of moving parts, potentially making them highly reliable [1].…”

The status of refrigeration techniques for vaccine storage and transportation in low-income settings

“…Thermoacoustic refrigeration is environmentally friendly and does not involve moving parts, which facilitates its production and maintenance. [99]. Shivakumara et al [100] developed a thermoacoustic refrigerator achieving a COP value of 1.66 and using helium as working fluid.…”