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Influences of nonlinearities of loudspeakers on performances of thermoacoustic refrigerators
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10.1063/1.2813616
/content/aip/journal/apl/91/24/10.1063/1.2813616
http://aip.metastore.ingenta.com/content/aip/journal/apl/91/24/10.1063/1.2813616
View: Figures

Figures

Image of FIG. 1.
FIG. 1.

(a) Model and (b) equivalent circuit of TR: , driving current; , inductance of coil; , total resistance; magnetic induction intensity; , length of coil; , driving force on the coil. , vibration velocity of coil; , area of diaphragm; , equivalent mass; , equivalent mechanical conductance; , equivalent compliance of vibration component, , acoustic load impedance of loudspeaker, i.e., the input impedance of resonance pipe.

Image of FIG. 2.
FIG. 2.

Influences of symmetrical nonlinearity of on system performances: solid line, linearity; dotted line, nonlinearity. The data are normalized by the corresponding values obtained with linear theory: (a) , where the horizontal coordinates indicate the displacement amplitude of the diaphragm obtained with the linear theory at the resonance frequency; (b) ; (c) ; (d) .

Image of FIG. 3.
FIG. 3.

Influences of symmetrical nonlinearity of on system performances: solid line, linearity; dotted line, nonlinearity. (a) , (b) , (c) , and (d) .

Image of FIG. 4.
FIG. 4.

Influence of loudspeaker’s nonlinearities on η with different , solid line: linearity; doted line: nonlinearity.

Image of FIG. 5.
FIG. 5.

Nonlinearity of makes (a) deviate from and and (b) closer to and .

Image of FIG. 6.
FIG. 6.

Influences of symmetrical nonlinearity of on system performances in case of Fig. 5(b): solid line, linearity; dotted line, nonlinearity. (a) , (b) , (c) , and (d) .

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/content/aip/journal/apl/91/24/10.1063/1.2813616
2007-12-12
2014-04-19
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752b84549af89a08dbdd7fdb8b9568b5 journal.articlezxybnytfddd
Scitation: Influences of nonlinearities of loudspeakers on performances of thermoacoustic refrigerators
http://aip.metastore.ingenta.com/content/aip/journal/apl/91/24/10.1063/1.2813616
10.1063/1.2813616
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