Results 31 to 40 of about 615 (139)

A dynamic model for the efficiency optimization of an oscillatory low grade heat engine [PDF]

open access: yes, 2011
The efficiency of a thermodynamic system is a key quantity on which its usefulness and wider application relies. This is especially true for a device that operates with marginal energy sources and close to ambient temperatures.
Markides, CN, Smith, TCB
core   +4 more sources

Numerical Modelling of Thermoacoustic Stirling Engines & Refrigerators

open access: yesRangahau Aranga: AUT Graduate Review, 2023
Thermoacoustic machines depend on the complex relationship between thermodynamics and acoustics, and thus understanding it is vital in order to analyse the working principles and optimise parameters (i.e. geometrical or operational) to improve their performance.
openaire   +1 more source

Progress Towards the Development of a Long-Lived Venus Lander Duplex System [PDF]

open access: yes, 2010
NASA has begun the development of a combined Stirling cycle power and cooling system (duplex) to enable the long-lived surface exploration of Venus and other harsh environments in the solar system. The duplex system will operate from the heat provided by
Bruder, Geoffrey A., Dyson, Roger W.
core   +1 more source

High-fidelity simulation of an ultrasonic standing-wave thermoacoustic engine with bulk viscosity effects

open access: yes, 2017
We have carried out boundary-layer-resolved, unstructured fully-compressible Navier--Stokes simulations of an ultrasonic standing-wave thermoacoustic engine (TAE) model.
Bhatia A. B.   +4 more
core   +1 more source

Determination of the stability limit of a thermoacoustic engine by means of finite elements [PDF]

open access: yes, 2013
A finite element model is presented to obtain the stability limit of, as an example, 2D standing wave thermoacoustic engine. The stability limit is the required heating to obtain self-sustained (thermo)acoustic oscillations. The method used to obtain the
Boer, AndrĂ© de   +2 more
core   +1 more source

Recent Stirling Conversion Technology Developments and Operational Measurements [PDF]

open access: yes, 2009
Under contract to the Department of Energy (DOE), Lockheed Martin Space Systems Company (LMSSC) has been developing the Advanced Stirling Radioisotope Generator (ASRG).
Oriti, Salvatore, Schifer, Nicholas
core   +1 more source

Experimental Performance Evaluation of a Thermoacoustic Stirling Engine with a Low-Cost Arduino-Based Acquisition System

open access: yesApplied Sciences
Existing thermoacoustic dynamic measurement instrumentation is typically expensive and relies on proprietary designs, sensors, and acquisition equipment.
Carmen Iniesta   +4 more
doaj   +1 more source

Numerical Study on Thermodynamic Performance of a Novel Thermoacoustically Driven Refrigerator---Double-acting Traveling-wave Thermoacoustic Refrigerator

open access: yesZhileng xuebao, 2012
A new thermoacoustic refrigerator which is driven by a double-acting traveling-wave thermoacoustic engine have been researched and designed. Through numerical simulation, we optimize the structure parameters of the refrigerator.
Yang Zhuo, Luo Ercang, Chen Yanyan
doaj  

Case study of an Organic Rankine Cycle (ORC) for waste heat recovery from an Electric Arc Furnace (EAF) [PDF]

open access: yes, 2017
The organic Rankine cycle (ORC) is a mature technology for the conversion of waste heat to electricity. Although many energy intensive industries could benefit significantly from the integration of ORC technology, its current adoption rate is limited ...
De Paepe, Michel   +6 more
core   +1 more source

THE INFLUENCE OF WAVE PATTERNS AND FREQUENCY ON THERMO-ACOUSTIC COOLING EFFECT [PDF]

open access: yes, 2011
With the increasing environmental challenges, the search for an environmentally benign cooling technology that has simple and robust architecture continues. Thermo-acoustic refrigeration seems to be a promising candidate to fulfil these requirements.
CHEN BAIMAN   +2 more
core  

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