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Appl. Sci. 2017, 7(7), 672; doi:10.3390/app7070672

Numerical Calculation of the Performance of a Thermoacoustic System with Engine and Cooler Stacks in a Looped Tube

1
The graduate school of Bio-Applications and Systems Engineering, Tokyo University of Agriculture and Technology, Tokyo 184-8588, Japan, s137663u@st.go.tuat.ac.jp
2
Department of Physics education, Faculty of Mathematics, Natural Sciences and Information Technology Education, The University of PGRI Semarang, Jl. Sidodadi Timur Nomor 24-Dr. Cipto, Karangtempel, Semarang, Jawa Tengah 50232, Indonesia
*
Author to whom correspondence should be addressed.
Academic Editor: Takahiko Miyazaki
Received: 3 February 2017 / Revised: 16 June 2017 / Accepted: 27 June 2017 / Published: 30 June 2017
(This article belongs to the Special Issue Sciences in Heat Pump and Refrigeration)
View Full-Text   |   Download PDF [546 KB, uploaded 30 June 2017]   |  

Abstract

The performance of a thermoacoustic system that is composed of a looped tube, an engine stack, a cooler stack, and four heat exchangers, is numerically investigated. Each stack has narrow flow channels, is sandwiched by two heat exchangers, and is located in the looped tube. In order to provide a design guide, the performance of the system is numerically calculated by changing the following three parameters: the radius of the flow channels in the engine stack, the radius of the flow channels in the cooler stack, and the relative position of the cooler stack. It was found that when the three parameters are optimized, the efficiency of the engine stack reaches 75% of Carnot’s efficiency and the coefficient of the performance (COP) of the cooler stack is 53% of Carnot’s COP, whereas 33% of the acoustic power generated by the engine stack is utilized in the cooler stack. View Full-Text
Keywords: performance; thermoacoustic engine, thermoacoustic cooler performance; thermoacoustic engine, thermoacoustic cooler
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Farikhah, I.; Ueda, Y. Numerical Calculation of the Performance of a Thermoacoustic System with Engine and Cooler Stacks in a Looped Tube. Appl. Sci. 2017, 7, 672.

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