A numerical study of a looped-tube thermoacoustic engine with a single-stage for utilization of low-grade heat

Kruse, Alexander; Ruziewicz, A.; Tajmar, Martin; Gnutek, Z.

doi:10.1016/j.enconman.2017.07.010

Cited by 21 publications

(4 citation statements)

References 31 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…These pipes were called phase adjusters b Sakamoto [211][212][213] and Liu [214,215], but compliance/inertance tubes b Jin [187]. Another method is the use of a stub , a sub-branch tube in Figure 23(c), first introduced by Yu [216] and later investigated by Kruse [217][218][219]. The stub can be viewed as a mass-spring oscillator that alters the acoustic field inside the loop through changing the diameter and length.…”

Section: Travelling-wave Thermoacoustic Systemsmentioning

confidence: 99%

Multi-physics coupling in thermoacoustic devices: A review

Chen

Tang

Mace

et al. 2021

Renewable and Sustainable Energy Reviews

106

View full text Add to dashboard Cite

Section: Travelling-wave Thermoacoustic Systemsmentioning

confidence: 99%

Multi-physics coupling in thermoacoustic devices: A review

Chen

Tang

Mace

et al. 2021

Renewable and Sustainable Energy Reviews

106

View full text Add to dashboard Cite

“…The introduction of the acoustoelectric transducer alters the acoustic impedance within the system, and therefore, degrades efficiency. The proper acoustic impedance conditions can be obtained by optimising the regenerator dimensions and/or position [52] or by adding impedance matching techniques such as a stub branch [53] compliance resistance tube [54] variable electric load resistance [55] ultracompliant loudspeaker [56].…”

Section: Externally Fired Gas Turbine (Efgt)mentioning

confidence: 99%

Asymmetrically heated multi-stage travelling-wave thermoacoustic electricity generator

Kisha

Riley

McKechnie

et al. 2021

Energy

View full text Add to dashboard Cite

“…A more detailed analysis of normalized impedance and phasing on the engine performance as well as research on other important construction parameters done by the authors has been published in [18].…”

Section: Acoustic Conditions In the Regeneratormentioning

confidence: 99%

Thermodynamic analysis of a thermoacoustic travelling wave engine

Ruziewicz

Kruse

Gnutek

2018

Journal of Mechanical and Energy Engineering

Self Cite

View full text Add to dashboard Cite

Thermoacoustics has become a promising technology to use heat from low temperature sources to drive engines. This study proposes a single-stage thermoacoustic travelling-wave engine for waste-heat recovery at 150°C. All the construction details of such a system are provided. A recently developed configuration of a looped tube with an impedance matching sidebranch stub is proposed. A numerical model of the engine is built in DeltaEC software to conduct the simulations. Furthermore, a detailed thermodynamic analysis of the engine is presented, including an energy balance, a description of the basic acoustic parameters in a steady state, as well as a study of a variable load influence on the performance of the engine. The Authors pointed out the necessity of the engine optimization and a proper choice of load related acoustic impedance, which would consider a trade-off between high power and high efficiency. Eventually, a possibility of achieving 40% exergy efficiency of the proposed engine is confirmed.

show abstract

A numerical study of a looped-tube thermoacoustic engine with a single-stage for utilization of low-grade heat

Cited by 21 publications

References 31 publications

Multi-physics coupling in thermoacoustic devices: A review

Multi-physics coupling in thermoacoustic devices: A review

Asymmetrically heated multi-stage travelling-wave thermoacoustic electricity generator

Thermodynamic analysis of a thermoacoustic travelling wave engine

Contact Info

Product

Resources

About