Thermoacoustic Analysis of Combustion-Driven Oscillation.

Mitigating Combustion-driven Oscillation (Thermoacoustic Instability) in Industrial Combustors

Combustion processes generate a band-limited pseudo-random sound that is often referred to as “combustion roar.” Although combustion roar sound is moderately intense but it is rather straight forward to quiet to a non-objectionable level by properly applying sound absorbing material around the burner area. In addition to the 'roar' sound which almost always exists in any confined combustion, on...

Bifurcation Analysis of Self-excited Thermoacoustic Oscillations in Damper-equipped Combustion Chambers

This paper presents the stability and bifurcation analysis of a nonlinear thermoacoustic model consisting of a combustion chamber coupled to a Helmholtz damper. Only the acoustic mode in the cavity of the combustion chamber to which the Helmholtz damper is tuned is considered. The Helmholtz damper includes a non-smooth damping term and can be seen as a tuned vibration absorber with a coupling o...

A hot air driven thermoacoustic-Stirling engine

Optimization of thermoacoustic engine driven thermoacoustic refrigerator using response surface methodology

Thermoacoustic engines (TAEs) are devices which convert heat energy into useful acoustic work whereas thermoacoustic refrigerators (TARs) convert acoustic work into temperature gradient. These devices work without any moving component. Study presented here comprises of a combination system i.e. thermoacoustic engine driven thermoacoustic refrigerator (TADTAR). This system has no moving componen...

exergy analysis of a trigeneration system driven by aninternal combustion engine with asteam ejector refrigeration system

the present study analizes a trigeneration system based on an internal combustion engine and a steam ejector refrigeration system from an energy point of view.