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Wednesday, July 29, 2020 | History

1 edition of Investigation of an argon-filled, thermoacoustic prime mover found in the catalog.

Investigation of an argon-filled, thermoacoustic prime mover

John Dietrick Lamade

Investigation of an argon-filled, thermoacoustic prime mover

by John Dietrick Lamade

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Published by Naval Postgraduate School, Available from the National Technical Information Service in Monterey, Calif, Springfield, Va .
Written in English


Edition Notes

Statementby John Dietrick Lamade II
ContributionsAtchley, Anthony Armstrong, 1957-, Gaitan, Felipe
The Physical Object
Pagination51 p. ;
Number of Pages51
ID Numbers
Open LibraryOL25454371M

The measured results were in a reasonably good agreement with the predicted results. So far, this system can deliver up to 61 W of acoustic power, which was about 17% of the Carnot efficiency. In the further step, the proposed device will be applied as the prime mover for driving the thermoacoustic refrigerator. It has been performed a simple simulation and calculation on solar energy collection which is used indirectly to power a thermoacoustic prime mover by producing pressurized hot steam which would supply thermal energy to the prime mover via sealed-off hot heat exchangers.

Thermoacoustic Engine and Refrigerator. Student: Subhan Ullah Student ID: M 27/05/ 1 Table of contents Introduction Simple TA-engine(Prime mover) and TA-Refrigerator(Heat pump) Objective Previous research Main components Assembly/Configuration Advantages of TA-devices 27/05/ 2 Introduction (Thermo-acoustic engine) Thermal . To date, the acoustic streaming have been only characterized for progressive and standing waves in current systems. A method to characterize theoretically the secondary flows in thermoacoustic systems with more complex geometries is developed in this paper. This method is applied in the case of an annular thermoacoustic prime mover.

This paper investigates the thermal performance of thermoacoustic heat exchangers subjected to acoustically oscillating flows. The analysis is carried out by experimental measurements of the heat fluxes sustained by the ambient heat exchanger of a prime mover of the standing wave type. A home-made parallel-plate heat exchanger is considered for the study.   The focus of this study is on serial and parallel configurations of a multistage thermoacoustic engines (TAE). Thermoacoustics integrates fluid dynamics, thermodynamics, and acoustics to explain the interactions existing between heat and sound.


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Investigation of an argon-filled, thermoacoustic prime mover by John Dietrick Lamade Download PDF EPUB FB2

Calhoun: The NPS Institutional Archive Theses and Dissertations Thesis Collection Investigation of an argon-filled, thermoacoustic prime mover. The goal of this thesis is to investigate the behavior of a thermoacoustic prime mover filled with argon.

Data was collected for three different operating conditions: (1) prior to the onset of acoustic oscillation; (2) immediately after onset; and (3) after the prime mover had reached steady state, at mean gas pressures of approximately 80 kPa, kPa, and : John Dietrick Lamade. Investigation of an argon-filled, thermoacoustic prime mover.

distribution is unlimitedThe goal of this thesis is to investigate the behavior of a thermoacoustic prime mover filled with argon.

Data was collected for three different operating conditions:!0 prior to the onset of acoustic oscillation, 2) immediately after onset and 3) after Author: II John Dietrick Lamade. regions in an argon-filled prime mover. This thesis is one in a sequence that have investigated thermoacoustic prime movers.

The goal of this research is to understand the behavior of prime movers in each of the three regions of operation. InLin began a quantitative study of a helium-filled prime mover. He investigated the region. The input electric power of heater is kept as 95 W. The prime mover begins to oscillate in LFM and HFM respectively and reaches stationary, when the mean pressure P m is and MPa.

Temperatures along the regenerator and pressure amplitude versus time are shown in Fig. 2, Fig. frequencies of the LFM and HFM mode are 76 and Hz Cited by:   Frontiers in Heat Investigation of an argon-filled (FHMT) ;ISSN [10] Liu YW and He YL, Experimental investigation of a thermoacoustic prime mover with helium-argon mixtures as working gas.

Power and Energy. ; [11] Symko OG, Acoustic approach to thermal management: Miniature thermoacoustic engines. 1. Introduction. The traveling wave thermoacoustic prime movers undergoes the same thermodynamic cycle as conventional Stirling cycle.

Yazaki et al. succeeded for the first time in constructing a traveling wave thermoacoustic prime mover by using a looped tube. The measured P and U in the looped tube shown that a phase lead Φ between P and U was.

A thermoacoustic prime mover instead of a mechanical compressor to drive a pulse tube is a promising refrigeration concept. Two of the most important advantages are: (1) there are no moving components except for the movement of the working fluid; (2) it can be driven by heat energy, which can utilize solar energy, fuel gas, etc.

A typical thermoacoustic prime mover has a well‐defined acoustic impedance in at least one place. For instance, many prime movers have a rigid end which forces the acoustic velocity to be zero at that point.

Such ‘‘built‐in’’ boundary conditions serve as convenient starting points for computational analysis of the performance of a device. They also serve to place the stack in a.

The prime movers and refrigerators based on thermoacoustics have gained considerable importance toward practical applications in view of the absence of moving components, reasonable efficiency, use of environmental friendly working fluids, etc. Devices such as twin Standing Wave ThermoAcoustic Prime Mover (SWTAPM), Traveling Wave ThermoAcoustic Prime Mover.

In this paper the various investigations in thermoacoustic refrigeration system are reviewed. Thermo acoustic refrigerator is a new type of energy conversion device, which can convert acoustic power into heat energy based on the thermo acoustic effect.

Thermoacoustic refrigeration is an emerging refrigeration technology which does not require any moving parts. resonator on the thermoacoustic effect. Mathew Skaria et al. [8] had done the CFD analysis on traveling wave thermoacoustic prime mover towards the development of pulse tube cryocoolers.

We present the simulation studies on the traveling wave thermoacoustic primemover by varying the working fluid and the operating pressure. In that case, we have made an engine (prime mover) which can e.g. produce sound as in Fig. This is a so-called thermoacoustic prime mover.

This is a so-called thermoacoustic prime mover. Stacks can be made of stainless steel plates but the device works also very well with loosely packed stainless steel wool or screens. A breadboard pulse tube refrigerator driven by a standing-wave thermoacoustic prime mover has been set up to study the relationship among stack, regenerator, and working fluids.

The stack of the thermoacoustic prime mover is packed with dense-mesh wire screens because of their low cost and ease of construction.

The study of an annular thermoacoustic prime mover has been presented at a previous meeting [Lin et al., J. Acoust. Soc.(A) ()].The prime mover described there was unable to reach onset.

As a result of improved analysis, the design has been simplified. The frequency response of a thermoacoustic prime mover has been measured as a function of the mean gas pressure and temperature gradient across the prime mover stack.

The quality factor Q and resonance frequency can be determined from the response. As the temperature gradient is increased, the Q increases, indicating a decrease in attenuation across the stack.

A numerical analysis of the two‐stack thermoacoustic prime mover in an annular resonator has been made. It was found that the addition of a second stack significantly alters the eigenmodes of a single stack annular prime mover such that thermoacoustic growth may be supported.

Simulations predict that one mode of the two‐stack prime mover could reach onset at a. A maximum output of 26 W from the thermoacoustic prime mover was achieved with the frequency, input power and heater temperature 73 Hz. In regard to thermoacoustic heat prime movers, the paper first gives a brief review of the discovery history of the two kinds of thermoacoustic.

A thermoacoustic standing-wave prime mover with a quarter-wave resonator has been investigated experimentally. The working fluid is air at the barometric pressure. The holographic interferometry and hot-wire anemometry have been used. A special optical setup, based on a Michelson interferometer, has been developed and used.

of a prime mover of the standing wave type, a configuration not considered in the above cited investigations and that needs a specific data reduction. From the experimental data, the gas-. Experimental investigation of a thermoacoustic refrigerator driven by a standing wave twin thermoacoustic prime mover International Journal of Refrigeration, Vol.

36, No. 8 Development of thermoacoustic devices for power generation and refrigeration.An acoustic field spontaneously induced in a thermoacoustic prime mover consisting of a looped tube and resonator is determined through simultaneously measurements of pressure P .