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Author : John Dietrick Lamade
Publisher :
ISBN 13 :
Total Pages : 51 pages
Book Rating : 4.:/5 (64 download)
Download or read book Investigation of an Argon-filled, Thermoacoustic Prime Mover written by John Dietrick Lamade and published by . This book was released on 1991 with total page 51 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author :
Publisher :
ISBN 13 :
Total Pages : 57 pages
Book Rating : 4.:/5 (227 download)
Download or read book Investigation of an Argon-Filled Thermoacoustic Prime Mover written by and published by . This book was released on 1991 with total page 57 pages. Available in PDF, EPUB and Kindle. Book excerpt: 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, 205 kPa and 305 kPa. Measured values of 1/Q are compared to predictions of a theory based on Swift's work. After onset, Q is determined from measurement of the rise time of the oscillations. The data set collected is the first to span onset and results show good agreement with theory. It is concluded that the theory can be used to provide reasonable input for a model to predict the steady state waveforms.
Author : Hsiao-Tseng Lin
Publisher :
ISBN 13 :
Total Pages : 75 pages
Book Rating : 4.:/5 (227 download)
Download or read book Investigation of a Heat Driven Thermoacoustic Prime Mover written by Hsiao-Tseng Lin and published by . This book was released on 1989 with total page 75 pages. Available in PDF, EPUB and Kindle. Book excerpt: The goal of this thesis is to investigate the work output of a heat driven thermoacoustic prime mover. The experimental approach was to measure the frequency response of both a simple resonant tube and a prime mover for a variety of values of mean gas pressure and applied temperature different across the prime mover stack. A least squares fit to the frequency response yields the quality factor which can be compared to predictions based on a short stack, boundary layer approximation theory. The results are reported of measurements made on the lowest three modes of the prime mover in helium for mean gas pressures between approximately 170 kPa and 500 kPa and the applied temperature differences between zero and onset. The signal waveforms of the sound generated by the prime mover above onset at a mean gas pressure of 308 kPa are also reported. Results for the resonant tube have at most 3% difference with theory. For the prime mover, the measurements generally agree with predictions for the fundamental mode except close to onset. This agreement between measured and predicted results worsens with decreasing mean gas pressure. Agreement is poor for the second and third modes for all pressures used. Finally, the sound generated by the prime mover above onset is highly distorted, and the distortion becomes more serve as the temperature difference increases. The peak positive pressure amplitude of this signal at temperature difference of 325 C, 368 C and 453 C are 1.1%, 4.4% and 7.9% of mean gas pressure, respectively. Keywords: Acoustics, Thermoacoustics, Thermoacoustic heat transports. (JHD).
Author :
Publisher :
ISBN 13 :
Total Pages : 62 pages
Book Rating : 4.:/5 (227 download)
Download or read book Investigation of a Heat Driven Thermoacoustic Prime Mover Above Onset of Self-Oscillation written by and published by . This book was released on 1991 with total page 62 pages. Available in PDF, EPUB and Kindle. Book excerpt: The goal of this thesis is to investigate the work output of a heat driven thermoacoustic prime mover above onset of self-oscillation. The exponentially growing sound wave, generated when a prime mover is initially 'turned on, ' was digitally sampled for a helium filled prime mover at pressures ranging from 238 kPa to 500 kPa and at temperature differences ranging from onset to 400 K. This data was then digitally filtered by a 100 Hz band pass filter centered on the prime mover's fundamental frequency. A least mean squares fit was applied to the envelope of the filter's output in order to determine the temporal absorption coefficient beta. From beta, the quality factor was computed. These quality factors were then compared to thermoacoustic theory. The agreement between the theoretical predictions and the measured results is extremely good at high mean gas pressures. As the mean gas pressure decreases, however, the agreement between the theoretical value of onset and the predicted slope of the data, increasingly deviate.
Author :
Publisher :
ISBN 13 :
Total Pages : 456 pages
Book Rating : 4.:/5 (31 download)
Download or read book Scientific and Technical Aerospace Reports written by and published by . This book was released on 1995 with total page 456 pages. Available in PDF, EPUB and Kindle. Book excerpt: Lists citations with abstracts for aerospace related reports obtained from world wide sources and announces documents that have recently been entered into the NASA Scientific and Technical Information Database.
Author : Wade H. Shafer
Publisher : Springer Science & Business Media
ISBN 13 : 1461524539
Total Pages : 391 pages
Book Rating : 4.4/5 (615 download)
Download or read book Masters Theses in the Pure and Applied Sciences written by Wade H. Shafer and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 391 pages. Available in PDF, EPUB and Kindle. Book excerpt: Masters Theses in the Pure and Applied Sciences was first conceived, published, and disseminated by the Center for Information and Numerical Data Analysis and Synthesis (CINDAS)* at Purdue University in 1957, starting its coverage of theses with the academic year 1955. Beginning with Volume 13, the printing and dis semination phases of the activity were transferred to University Microfilms/Xerox of Ann Arbor, Michigan, with the though that such an arrangement would be more beneficial to the academic and general scientific and technical community. After five years of this joint undertaking we had concluded that it was in the interest of all concerned if the printing and distribution of the volumes were handled by an international publishing house to assure improved service and broader dissemi nation. Hence, starting with Volume 18, Masters Theses in the Pure and Applied Sciences has been disseminated on a worldwide basis by Plenum Publishing Corporation of New York, and in the same year the coverage was broadened to include Canadian universities. All back issues can also be ordered from Plenum. We have reported in Volume 37 (thesis year 1992) a total of 12,549 thesis titles from 25 Canadian and 153 United States universities. We are sure that this broader base for these titles reported will greatly enhance the value of this impor tant annual reference work. While Volume 37 reports theses submitted in 1992, on occasion, certain uni versities do report theses submitted in previous years but not reported at the time.
Download or read book Experimental Study on a Standing Wave Thermoacoustic Prime Mover with Air Working Gas at Various Pressures written by and published by . This book was released on 2016 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Ching-Kai Meng
Publisher :
ISBN 13 : 9781423585336
Total Pages : 72 pages
Book Rating : 4.5/5 (853 download)
Download or read book Transient Phenomena in Thermoacoustic Prime Movers written by Ching-Kai Meng and published by . This book was released on 1996-06-01 with total page 72 pages. Available in PDF, EPUB and Kindle. Book excerpt: The purpose of this thesis is to investigate the evolution of the acoustic pressure waveform and temperature change across the heat exchangers as functions of time in a thermoacoustic prime mover. Measurements are reported for both nitrogen and helium gas under different mean pressures and initial temperature differences. Aspects of this thesis included the design and construction of the prime mover and implementation of a computer controlled data acquisition system. Tha goal is to form a set of data with which to test transient, nonlinear theories of thermoacoustics. The main conclusion is that models will have to take into account the performance of heat exchangers to accurately model the initial build up of the oscillations.
Author : Liang Zhang
Publisher : Elsevier
ISBN 13 : 008048039X
Total Pages : 1094 pages
Book Rating : 4.0/5 (84 download)
Download or read book Proceedings of the Twentieth International Cryogenic Engineering Conference (ICEC20) written by Liang Zhang and published by Elsevier. This book was released on 2006-02-20 with total page 1094 pages. Available in PDF, EPUB and Kindle. Book excerpt: Proceedings of the 20th International Cryogenic Engineering Conference
Author : Artur J. Jaworski
Publisher : MDPI
ISBN 13 : 3038427101
Total Pages : 179 pages
Book Rating : 4.0/5 (384 download)
Download or read book Heat Transfer Processes in Oscillatory Flow Conditions written by Artur J. Jaworski and published by MDPI. This book was released on 2018-04-06 with total page 179 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book is a printed edition of the Special Issue "Heat Transfer Processes in Oscillatory Flow Conditions" that was published in Applied Sciences
Author : Dan Zhao
Publisher : Academic Press
ISBN 13 : 0323899188
Total Pages : 1145 pages
Book Rating : 4.3/5 (238 download)
Download or read book Thermoacoustic Combustion Instability Control written by Dan Zhao and published by Academic Press. This book was released on 2023-02-13 with total page 1145 pages. Available in PDF, EPUB and Kindle. Book excerpt: Thermoacoustic Combustion Instability Control: Engineering Applications and Computer Codes provides a unique opportunity for researchers, students and engineers to access recent developments from technical, theoretical and engineering perspectives. The book is a compendium of the most recent advances in theoretical and computational modeling and the thermoacoustic instability phenomena associated with multi-dimensional computing methods and recent developments in signal-processing techniques. These include, but are not restricted to a real-time observer, proper orthogonal decomposition (POD), dynamic mode decomposition, Galerkin expansion, empirical mode decomposition, the Lattice Boltzmann method, and associated numerical and analytical approaches. The fundamental physics of thermoacoustic instability occurs in both macro- and micro-scale combustors. Practical methods for alleviating common problems are presented in the book with an analytical approach to arm readers with the tools they need to apply in their own industrial or research setting. Readers will benefit from practicing the worked examples and the training provided on computer coding for combustion technology to achieve useful results and simulations that advance their knowledge and research. - Focuses on applications of theoretical and numerical modes with computer codes relevant to combustion technology - Includes the most recent modeling and analytical developments motivated by empirical experimental observations in a highly visual way - Provides self-contained chapters that include a comprehensive, introductory section that ensures any readers new to this topic are equipped with required technical terms
Author :
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ISBN 13 :
Total Pages : 840 pages
Book Rating : 4.:/5 (3 download)
Download or read book Government Reports Announcements & Index written by and published by . This book was released on 1993-07 with total page 840 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Ronald G. Jr. Ross
Publisher : Springer Science & Business Media
ISBN 13 : 0306471124
Total Pages : 797 pages
Book Rating : 4.3/5 (64 download)
Download or read book Cryocoolers 11 written by Ronald G. Jr. Ross and published by Springer Science & Business Media. This book was released on 2007-05-08 with total page 797 pages. Available in PDF, EPUB and Kindle. Book excerpt: Composed of papers written by leading engineers and scientists in the field, this valuable collection reports the most recent advances in cryocooler development, contains extensive performance test results and comparisons, and relates the latest experience in integrating cryocoolers into advanced applications.
Author :
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ISBN 13 :
Total Pages : 292 pages
Book Rating : 4.:/5 (31 download)
Download or read book Naval Research Reviews written by and published by . This book was released on 1992 with total page 292 pages. Available in PDF, EPUB and Kindle. Book excerpt:
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ISBN 13 :
Total Pages : 66 pages
Book Rating : 4.:/5 (227 download)
Download or read book Theoretical and Experimental Study of Thermoacoustic Engines written by and published by . This book was released on 1991 with total page 66 pages. Available in PDF, EPUB and Kindle. Book excerpt: Thermoacoustic engines can be used to pump heat using a sound wave (refrigerator or heat pump) or pump a sound wave using a temperature gradient (prime mover). The basic arrangement is a gas-filled acoustic resonator with appropriately positioned thermoacoustic elements. Two types of thermoacoustic elements are used in these engines. The first type are heat exchanges which are used to communicate heat between the gas and external heat reservoirs. The second type is the thermoacoustic engine (TAE), also known as a stack. The TAEs are sections of porous media that support the temperature gradient, the transport heat on the acoustic wave between the exchangers, and that produces or absorbs acoustic power. Previous theoretical results in thermoacoustics have been developed for TAEs with circular or parallel slit pore geometries. We have developed a general linear formulation for gas-filled TAEs having pores of arbitrary cross-sectional geometry. This analysis, which is very helpful in designing optimal engines, indicates the parallel slit pore geometry optimizes heat and work flow.
Author : Christos N. Markides
Publisher : Woodhead Publishing
ISBN 13 : 0128182377
Total Pages : 526 pages
Book Rating : 4.1/5 (281 download)
Download or read book Power Generation Technologies for Low-Temperature and Distributed Heat written by Christos N. Markides and published by Woodhead Publishing. This book was released on 2023-06-13 with total page 526 pages. Available in PDF, EPUB and Kindle. Book excerpt: Power Generation Technologies for Low-Temperature and Distributed Heat presents a systematic and detailed analysis of a wide range of power generation systems for low-temperature (lower than 700-800°C) and distributed heat recovery applications. Each technology presented is reviewed by a well-known specialist to provide the reader with an accurate, insightful and up-to-date understanding of the latest research and knowledge in the field. Technologies are introduced before the fundamental concepts and theoretical technical and economic aspects are discussed, as well as the practical performance expectations. Cutting-edge technical progress, key applications, markets, as well as emerging and future trends are also provided, presenting a multifaceted and complete view of the most suitable technologies. A chapter on various options for thermal and electrical energy storage is also included with practical examples, making this a valuable resource for engineers, researchers, policymakers and engineering students in the fields of thermal energy, distributed power generation systems and renewable and clean energy technology systems. Presents a wide range of power generation technologies based on thermomechanical cycles, membrane technology, thermochemical, thermoelectric, photoelectric and electrochemical effects Explains the fundamental concepts and underlying operation principles in each case, and provides theoretical performance expectations and practical technical and economic characteristics Reviews the cutting-edge technical progress, key applications, markets, emerging and future trends, and includes practical examples of all technologies Details advantages and disadvantages of each technology to allow the reader to make informed decisions of their own for different applications
Author : Mo Jie Sun
Publisher : Trans Tech Publications Ltd
ISBN 13 : 3038139327
Total Pages : 2080 pages
Book Rating : 4.0/5 (381 download)
Download or read book Advances in Power and Electrical Engineering written by Mo Jie Sun and published by Trans Tech Publications Ltd. This book was released on 2012-12-13 with total page 2080 pages. Available in PDF, EPUB and Kindle. Book excerpt: This 2-volumes set contains selected and peer-review papers in the subject areas of engineering thermo physics, applied thermal engineering, power machinery and engineering, fluid engineering and machinery, HVAC, air conditioning and refrigeration, power system and automation, high voltage and insulation technology, motor and electrical, electrical engineering principles and applications, power electronics and power drives, smart grid technologies, power system management.
