heat engine Enthalpy of flowing fluid Energy lost by conduction Axial Temperature gradient in stack Controlled by pressure Controlled by composition HeNe DeltaEC ID: 815788
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Slide1
HP 2015 RZ2
Slide2TAHE
Thermoacoustic
heat engine
Slide3Enthalpy
of flowing fluidEnergy lost by conduction
Axial Temperature gradient in stack
Slide4Controlled by pressure
Controlled by composition
He+Ne
Slide5DeltaEC
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)
Slide6Puzzle: 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)
Slide7Critical gradient of stack temperature presented in lecture. Is it consistent with this inequality?