HP 2015 RZ 2 TAHE Thermoacoustic - PowerPoint Presentation

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Uploaded On 2020-07-02

HP 2015 RZ 2 TAHE Thermoacoustic - PPT Presentation

heat engine Enthalpy of flowing fluid Energy lost by conduction Axial Temperature gradient in stack Controlled by pressure Controlled by composition HeNe DeltaEC ID: 792756

controlled stack deltaec ratio stack controlled ratio deltaec gradient acoustic temperature parameters pressure

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Presentation Transcript

Slide1

HP 2015 RZ2

Slide2

TAHE

Thermoacoustic

heat engine

Slide3

Enthalpy

of flowing fluidEnergy lost by conduction

Axial Temperature gradient in stack

Slide4

Controlled by pressure

Controlled by composition

He+Ne

Slide5

DeltaEC

is used for optimization of parameters BR (Blockage ratio), DR (drive ratio), f (resonant frequency), p

m (mean pressure), loacation of stack X…Maximum acoustic power (inner loop Global design params)Minimum of acoustic losses (also material and geometry parameters)

Slide6

Puzzle: The following equations are

Fourier

Kirchhoff, continuity and Navier

Stokes equation. Which is which?

Theoretical background of DeltaEC was developed by Nikolaus Rott (Swiss Federal Institute of Technol., Zurich)

Slide7

Critical gradient of stack temperature presented in lecture. Is it consistent with this inequality?