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Relevant bibliographies by topics / Stirling engine regenerator

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Academic literature on the topic 'Stirling engine regenerator'

Author: Grafiati

Published: 4 June 2021

Last updated: 2 February 2022

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Journal articles on the topic "Stirling engine regenerator"

1

Jones, J. D. "Inhomogeneity of Fluid Flow in Stirling Engine Regenerators." Journal of Engineering for Gas Turbines and Power 111, no. 4 (1989): 595–600. http://dx.doi.org/10.1115/1.3240295.

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The literature relating to inhomogeneity of flow in regenerators is briefly reviewed. It is noted that, in contrast to other applications of regenerators, relatively little attention has been paid to the consequences of flow inhomogeneity for thermal regeneration in Stirling cycle machines. The construction of regenerator capsules for a large stationary Stirling engine is described. A test rig is developed to measure the gas velocity profile across the face of the packed regenerator capsules under steady flow conditions. Measured flow profiles for a number of different matrix materials and construction techniques are presented, and it is noted that stacked-mesh regenerator matrices tend to display marked inhomogeneities of flow. The consequences of flow inhomogeneity for flow friction and regenerator effectiveness are analyzed theoretically, and approximate formulae deduced. One method for reducing flow inhomogeneity in stacked-screen matrices is described.

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Kussul, Ernst, Oleksandr Makeyev, Tatiana Baidyk, and Omar Olvera. "Design of Ericsson Heat Engine with Micro Channel Recuperator." ISRN Renewable Energy 2012 (November 14, 2012): 1–8. http://dx.doi.org/10.5402/2012/613642.

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Stirling cycle and Rankine cycle heat engines are used to transform the heat energy of solar concentrators to mechanical and electrical energy. The Rankine cycle is used for large-scale solar power plants. The Stirling cycle can be used for small-scale solar power plants. The Stirling cycle heat engine has many advantages such as high efficiencyand long service life. However, the Stirling cycle is good for high-temperature difference. It demands the use of expensive materials. Its efficiency depends on the efficiency of the heat regenerator. The design and manufacture of a heat regenerator are not a trivial problem because the regenerator has to be placed in the internal space of the engine. It is possible to avoid this problem if we place the regenerator out of the internal engine space. To realize this idea it is necessary to develop the Ericsson cycle heat engine. We propose theoretical model and design of this engine.

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Harrod, J., P. J. Mago, K. Srinivasan, and L. M. Chamra. "First and second law analysis of a Stirling engine with imperfect regeneration and dead volume." Proceedings of the Institution of Mechanical Engineers, Part C: Journal of Mechanical Engineering Science 223, no. 11 (2009): 2595–607. http://dx.doi.org/10.1243/09544062jmes1651.

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This article discusses the thermodynamic performance of an ideal Stirling cycle engine. This investigation uses the first law of thermodynamics to obtain trends of total heat addition, net work output, and thermal efficiency with varying dead volume percentage and regenerator effectiveness. Second law analysis is used to obtain trends for the total entropy generation of the cycle. In addition, the entropy generation of each component contributing to the Stirling cycle processes is considered. In particular, parametric studies of dead volume effects and regenerator effectiveness on Stirling engine performance are investigated. Finally, the thermodynamic availability of the system is assessed to determine theoretical second law efficiencies based on the useful exergy output of the cycle. Results indicate that a Stirling engine has high net work output and thermal efficiency for low dead volume percentages and high regenerator effectiveness. For example, compared to an engine with zero dead volume and perfect regeneration, an engine with 40 per cent dead volume and a regenerator effectiveness of 0.8 is shown to have ∼60 per cent less net work output and a 70 per cent smaller thermal efficiency. Additionally, this engine results in approximately nine times greater overall entropy generation and 55 per cent smaller second law efficiency.

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Ye, Wenlian, Zhe Yang, and Yingwen Liu. "Exergy loss analysis of the regenerator in a solar Stirling engine." Thermal Science 22, Suppl. 2 (2018): 729–37. http://dx.doi.org/10.2298/tsci170911058y.

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In order to evaluate the irreversibility and exergy losses of the regenerators in a solar beta-type free piston Stirling engine due to flow friction, 1-D thermodynamic model to quantify exergy loss in the regenerators are built. The effects of important parameters, such as oscillating flow pressure drop, the exergy loss to flow friction, the exergy losses to conduction heat transfer at the hot and cold side of the regenerator and the percentage of Carnot efficiency of Stirling engine are presented and studied in detail. Results show that exergy loss decreases with the increase of the porosity and matrix diameter. As for the regenerator length, there is an optimum value that is equal to 0.035 m where the exergy loss is minimal and the percentage of Carnot efficiency is maximal. Therefore, some parameters should be selected reasonably to meet the overall design requirements of a solar Stirling engine.

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WANG, Jiansheng. "Characteristics of Reciprocating Stirling Engine Regenerator." Journal of Mechanical Engineering 49, no. 08 (2013): 151. http://dx.doi.org/10.3901/jme.2013.08.151.

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de Boer, P. C. T. "Maximum Attainable Performance of Stirling Engines and Refrigerators." Journal of Heat Transfer 125, no. 5 (2003): 911–15. http://dx.doi.org/10.1115/1.1597618.

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The flow through the regenerator of a Stirling engine is driven by differences of pressure in the compression and expansion spaces. These differences lead to power dissipation in the regenerator. Using linearized theory, it is shown that this dissipation severely limits the maximum attainable thermal efficiency and nondimensional power output. The maximum attainable values are independent of the value of the regenerator conductance. For optimized nondimensional power output, the thermal efficiency equals only half the Carnot value. The power dissipated in the regenerator is removed as part of the heat withdrawn at the regenerator’s cold side. Analogous results are presented for the Stirling refrigerator. At optimized nondimensional rate of refrigeration, its coefficient of performance is less than half the Carnot value.

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Kropiwnicki, Jacek. "Application of Stirling Engine Type Alpha Powered by the Recovery Energy on Vessels." Polish Maritime Research 27, no. 1 (2020): 96–106. http://dx.doi.org/10.2478/pomr-2020-0010.

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AbstractThe Stirling engine is a device in which thermal energy is transformed into mechanical energy without any contact between the heat carrier and the working gas enclosed in the engine. The mentioned feature makes this type of engine very attractive for the use of the recovery energy taken from other heat devices. One of the potential applications of Stirling engines is the use of thermal energy generated in the ship’s engine room for producing electricity. The work presents the concept of the Stirling engine type alpha powered by the recovery energy. The model of Stirling engine developed in this work allows a quantitative assessment of the impact of the design features of the engine, primarily the heat exchange surfaces and the volume of control spaces, on the achieved efficiency and power of the engine. Using an iterative procedure, Stirling engine simulation tests were carried out taking into account the variable structural features of the system. The influence of the size of the heater and the cooler, as well as the effectiveness of the regenerator and the temperature of the heat source on the efficiency and power produced by the Stirling engine have been presented.

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Bataineh, Khaled M. "Optimization analysis of solar-powered average temperature Stirling heat engine." Journal of Energy in Southern Africa 26, no. 1 (2015): 55–66. http://dx.doi.org/10.17159/2413-3051/2015/v26i1a2221.

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This paper investigates the performance of the solar powered dish-Stirling engine using the nonlinearized heat loss model of the solar dish collector and the irreversible cycle model of the Stirling engine. Finite time thermodynamic analysis is used to investigate the influence of the finite-rate heat transfer, operating temperatures, heat leak coefficient, and ratio of volume during regeneration processes, regenerator losses, thermal bridges losses on the maximum power output and the corresponding overall efficiency. The maximum overall system efficiency is 32% corresponding to absorber temperature and concentrating ratio of 850 K and 1300, respectively. The present analysis provides the basis for the design of a solar-powered mean temperature differential Stirling engine powered by solar dish system.

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KAGAWA, Noboru. "Design of Regenerator for 3kW Stirling Engine." Transactions of the Japan Society of Mechanical Engineers Series B 68, no. 675 (2002): 3183–90. http://dx.doi.org/10.1299/kikaib.68.3183.

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Jiang, Feng Jian, Xiao Guang Wu, Zhi Guo Zhang, and Chen Lin. "Influence of Porous Media Property on Stirling Engine Performance." Applied Mechanics and Materials 44-47 (December 2010): 2006–10. http://dx.doi.org/10.4028/www.scientific.net/amm.44-47.2006.

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Porous medium is playing an important role in technological advances nowadays. They exist everywhere in nature and were widely used in lots of engineering projects due to their huge internal surface area and ultrafine pore size. These properties allow them to achieve good performances in heat and mass transfer. So, the regenerator of Stirling Engine uses porous medium as the matrix to get higher heat transfer efficiency. In this study, the regenerator of a 55W Stirling engine was calculated using the 1D numerical model to find the most efficient porous media from kinds of options with different structures and different parameters.

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Dissertations / Theses on the topic "Stirling engine regenerator"

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Yuan, Zheng Shan. "Oscillatory flow and heat transfer in a Stirling engine regenerator." Case Western Reserve University School of Graduate Studies / OhioLINK, 1993. http://rave.ohiolink.edu/etdc/view?acc_num=case1056988063.

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Stowe, Robert Alan. "Heat transfer from a circular cylinder subject to an oscillating crossflow as in a stirling engine regenerator." Thesis, University of British Columbia, 1987. http://hdl.handle.net/2429/26741.

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An experiment was designed and carried out on the fundamental, but poorly understood problem of oscillating flow past a single, transverse, circular cylinder. This is an approximation of the flow about a single element in a matrix-type regenerator used in Stirling-cycle engines. The experimental rig was designed and built to allow tests to be carried out for the wide range of fluid flow parameters characteristic of various Stirling engines. The influence of these parameters on convective heat transfer rates was measured so the approximate effects of these same parameters on a Stirling engine regenerator could be determined. The main conclusion from the experiment was that average Nusselt numbers, based on test-cylinder diameter and subject to flow conditions similar to those found in Stirling engine regenerators, were 40 to 80% higher than those predicted by a steady flow correlation, for a given Reynolds number. This may be due to the high levels of turbulence generated near the test-cylinder. A secondary conclusion is that the compression and expansion of the working fluid due to a 90 degree phase angle difference between the motion of the pistons raises convective heat transfer rates from the test-cylinder substantially over the 180 degree phase angle, or "sloshing" motion case.<br>Applied Science, Faculty of<br>Mechanical Engineering, Department of<br>Graduate

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Němec, Jan. "Studie Stirlingova motoru." Master's thesis, Vysoké učení technické v Brně. Fakulta strojního inženýrství, 2013. http://www.nusl.cz/ntk/nusl-230824.

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This work deals with the structural design of the Stirling engine beta modifications for increasing the thermal efficiency of the regenerator. This work is an attempt to propose a regenerator, or propose ways of working fluid through the heater and the heat exchanger to cool the chamber. All using different design elements. Furthermore, this work deals with stress analysis using computer software.

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Macháček, Jan. "Stirlingův termodynamický cyklus." Doctoral thesis, Vysoké učení technické v Brně. Fakulta elektrotechniky a komunikačních technologií, 2009. http://www.nusl.cz/ntk/nusl-233504.

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My doctoral thesis deals with study and analyse of Stirling thermodynamical cycle. Cycle that is composed of two isochoras and two isotherms. I describe functional principle of Stirling engine and all its parts, constructional variations of pistons system and possible engine working modes. Next chapter contains analyse of engine constructional parameters. Measuring of torque and load characteristics, p - V schemes and output work for various engine inputs is part of this analyse. There is composed mathematical engine characterization by means of Schmidt theory in chapter five. Mathematical characterization is consequently applied to engine model. Theoretical analysis and practical measurement were base for concepts, realization and verification of constructional correction. One part of my thesis is attended to design of new lamella for regenerative exchanger. For optimal lamella constructional proportions were used computational algorithm and simulations. There is concept of cogeneration unit with Stirling engine and its benefits check in last chapter. General theoretical and practical analyse of workable Stirling engine is result of my thesis. Analyse in this extent was not nowhere publishing yet. Design of regenerative exchanger lamella is then practical input of my thesis.

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Gallo, Michal. "Model Stirlingova motoru v PSCAD." Master's thesis, Vysoké učení technické v Brně. Fakulta elektrotechniky a komunikačních technologií, 2016. http://www.nusl.cz/ntk/nusl-242000.

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This dissertation about the Stirling engine deals with the history and formation of the heat engine. At the beginning of this work, fundamental parts and their functions are described, elucidating the principle of operation explained by the thermodynamic cycle and subsequently comparing the ideal and the real Stirling cycle and last but not least provides various modifications whilst describing their differences. The mathematical model of the Stirling engine is processed by Schmidth’s theoretical analysis and thereafter is created in PScad v46. The process of creating a model is shown in one of the chapters of this dissertation. The results were taken into account in the design of 3D models in Inventor Professional by Autodesk. The work concludes with the evaluation of the computational model and its functionality as well as the documentation of the 3D model.

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Gidugu, Praveen. "Effect of adding a regenerator to Kornhauser's MIT "two-space" test rig." Cleveland, Ohio : Cleveland State University, 2008. http://rave.ohiolink.edu/etdc/view?acc_num=csu1212595450.

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Thesis (M.S.)--Cleveland State University, 2008.<br>Abstract. Title from PDF t.p. (viewed on July 9, 2008). Includes bibliographical references (p. 100-103). Available online via the OhioLINK ETD Center. Also available in print.

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Hugh, Mark A. "The effects of regenerator porosity on the performance of a high capacity stirling cycle cryocooler." Ohio : Ohio University, 1993. http://www.ohiolink.edu/etd/view.cgi?ohiou1175707790.

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Sung, Yi-Lung, and 宋怡龍. "Investigation of Low-Temperature Differential Stirling Engine Regenerator." Thesis, 2008. http://ndltd.ncl.edu.tw/handle/24385086630586758867.

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碩士<br>淡江大學<br>機械與機電工程學系碩士班<br>96<br>The focus attention in this research is on the material and thickness of Low-Temperature Differential Stirling engine regenerator. The displacer regenerator was chosen. The activated carbon filter and formcores were chosen as the regenerator material. The dimension of the engine is 120 mm × 120 mm × 165 mm；the weight of the engine is 380 grams；the dimension of the displacer is 94 mm. Electron heater was adopted for heating；natural convection was adopted for cooling；the range of input power was 5 W, 10 W and 15 W；environment temperature was 28±1℃；operation temperature was 52℃ to 108℃. The range of formcore thickness is 1 mm to 7 mm. Engine speed was measured with different regenerator material and thickness. The research indicates that engine speed with formcore regenerator is faster than activated carbon filter regenerator. The increase of engine speed is caused by the increase of the thickness. The best thickness is 6 mm.

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Paul, Raphael Rüdiger. "Optimal Control of Stirling Engines." 2020. https://monarch.qucosa.de/id/qucosa%3A73247.

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In dieser Arbeit wird eine Methode zur Leistungsoptimierung der Kolbenpfade von Stirling-Motoren entwickelt, die auf der Theorie der optimalen Steuerung beruht. Für die effiziente praktische Umsetzbarkeit ist dabei ein geringer numerischer Aufwand des eingesetzten thermodynamischen Modells entscheidend. In detaillierten Modellen von Stirling-Motoren resultiert ein Großteil des numerischen Aufwandes aus der Beschreibung des Regenerators, einem gasdurchströmten Kurzzeit-Wärmespeicher. Im ersten Teil der Arbeit wird der Fokus deshalb auf die Entwicklung eines effizienten Regeneratormodells gelegt. Hierbei wird ein neuartiger Ansatz gewählt, der sich aus der Perspektive der Endoreversiblen Thermodynamik ergibt: Der Regenerator wird als endoreversibles Teilsystem betrachtet, welches an zwei Kontaktpunkten durch irreversible Interaktionen mit den benachbarten Teilsystemen Gasteilchen, Entropie und Energie austauscht. Innere Irreversibilitäten des Regenerators werden als Entropiequellterme in die Modellierung einbezogen. Im zweiten Teil der Arbeit wird dann ein iterativer Optimierungsalgorithmus erarbeitet, der die Leistung von Stirling-Motoren unter periodischen Randbedingungen für eine vorgegebene Periodendauer maximieren kann. Der Algorithmus startet mit vorgegeben initialen Kolbenpfaden, die im Laufe der Iterationen graduell verschoben und so den optimalen Pfaden angenähert werden. Um diese graduelle Verschiebung zu bestimmen, muss in jedem Iterationsschritt neben dem Differentialgleichungssystem, das die Thermodynamik des Stirling-Motors beschreibt, ein konjugiertes Differentialgleichungssystem gelöst werden. Der erarbeitete Algorithmus nutzt dabei die Existenz eines Grenzzyklus des konjugierten Differentialgleichungssystems unter Zeitumkehr zu dessen Lösung für periodische Randbedingungen aus. Unter Verwendung des endoreversiblen Regeneratormodells wird mit diesem iterativen Optimierungsalgorithmus die Theorie der optimalen Steuerung erstmals für die Kolbenpfadoptimierung eines beispielhaften Stirling-Motors in α-Konfiguration eingesetzt.<br>In this thesis a method for power optimization of the piston paths of Stirling engines is developed, which is based on Optimal Control Theory. For the efficient practical feasibility of this task, low numerical effort of the utilized thermodynamic model is crucial. In detailed models of Stirling engines, a large part of the numerical effort results from the description of the regenerator, which is a short-time heat storage. Therefore, in the first part of this thesis the focus is on the development of an efficient regenerator model. Here, a novel ansatz is chosen which arises from the perspective of Endoreversible Thermodynamics: The regenerator is described as an endoreversible subsystem that has two contact points, at which it exchanges particles, entropy, and energy with the adjacent subsystems through irreversible interactions. Internal irreversibilities of the regenerator are included in the model as entropy source terms. In the second part of the thesis an iterative optimization algorithm is worked out, which can maximize the power output of Stirling engines under periodic boundary conditions for given cycle time. The algorithm starts with predefined initial piston paths, which are gradually shifted over the course of the iterations and thus approach the optimal paths. To determine this gradual shift, in every iteration not only the system of differential equations describing the thermodynamics of the Stirling engine needs to be solved, but also a conjugate system of differential equations. The algorithm here exploits the existence of a limit cycle of the conjugate system under time reversal to solve it for periodic boundary conditions. By means of the endoreversible regenerator model, with this iterative optimization algorithm Optimal Control Theory is applied for the first time to optimize the piston paths of an exemplary Stirling engine in α-configuration.

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Pei‐Jun, Heish, and 謝佩君. "A study on the optimization of regeneration channel of stirling engine." Thesis, 2010. http://ndltd.ncl.edu.tw/handle/50722785995183313477.

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碩士<br>國立臺灣海洋大學<br>輪機工程系<br>98<br>When the rhombic drive stirling engine is in operation, the displacer design in the cylinder related with gas compression will effect thermal efficiency of stirling engine. If the gap between displacer and cylinder is too large and stroke length of displacer during gas expansion and compression is too short, it will reduce cylinder operation efficiency, even shutdown the cylinder operation. Thus, searching a optimal regeneration channel to improve the thermal efficiency is required. This paper is to study the optimization of regeneration channel’s gap of stirling engine. First of all, we design three different displacer structures with Pro/E Wildfire. Then, we analyze the working fluid pressure in the cylinder and the volume change with FLUENT thermal field analysis. It designs the regeneration channel’s gap control parameters (regeneration channel clearance, regeneration channel material, working fluid) in moving gas cylinder to arranged in 3 different level. We integrate these control parameters into Taguchi experiment method. Finally, the theoretical and simulation data is to be evidence.

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Books on the topic "Stirling engine regenerator"

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C, Tew Roy, ed. Stirling convertor regenerators. Taylor & Francis, 2012.

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Regenerative thermal machines (Stirling and Vuilleumier cycle machines) for heating and cooling. International Institute of Refrigeration, 2000.

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The Regenerator and the Stirling Engine. Wiley, 1997.

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Ibrahim, Mounir B., and Jr Roy C. Tew. Stirling Convertor Regenerators. Taylor & Francis Group, 2017.

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Ibrahim, Mounir B., and Roy C. Tew Jr. Stirling Convertor Regenerators. Taylor & Francis Group, 2016.

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United States. National Aeronautics and Space Administration., ed. Composite matrix regenerator for Stirling engines. National Aeronautics and Space Administration, 1997.

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Friction factor characterization for high-porosity random fiber regenerators. National Aeronautics and Space Administration, Glenn Research Center, 2001.

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Book chapters on the topic "Stirling engine regenerator"

1

Sowale, Ayodeji, and Sarah Odofin. "Regenerator Losses in a Free Piston Stirling Engine." In Leadership, Innovation and Entrepreneurship as Driving Forces of the Global Economy. Springer International Publishing, 2016. http://dx.doi.org/10.1007/978-3-319-43434-6_4.

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Gheith, Ramla, Houda Hachem, Fethi Aloui, and Sassi Ben Nasrallah. "Experimental and Theoretical Investigation of Flows Inside a Gamma Stirling Engine Regenerator." In Exergy for A Better Environment and Improved Sustainability 1. Springer International Publishing, 2018. http://dx.doi.org/10.1007/978-3-319-62572-0_27.

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Ramachandran, Siddharth, Naveen Kumar, and Mallina Venkata Timmaraju. "Effect of Top Losses and Imperfect Regeneration on Power Output and Thermal Efficiency of a Solar Low Delta-T Stirling Engine." In Proceedings of the 7th International Conference on Advances in Energy Research. Springer Singapore, 2020. http://dx.doi.org/10.1007/978-981-15-5955-6_28.

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"Potential 6% to 9% Power Increase for a Foil-Type “Microfab” Regenerator in the Sunpower ASC Engine." In Stirling Convertor Regenerators. CRC Press, 2011. http://dx.doi.org/10.1201/b11704-19.

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"Fatigue Failure of Regenerator Screens in a High-Frequency Stirling Engine." In Handbook of Case Histories in Failure Analysis. ASM International, 1992. http://dx.doi.org/10.31399/asm.fach.v01.c9001033.

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"- Types of Stirling Engine Regenerators." In Stirling Convertor Regenerators. CRC Press, 2016. http://dx.doi.org/10.1201/b11704-8.

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"- Applications Other Than Stirling Engines." In Stirling Convertor Regenerators. CRC Press, 2016. http://dx.doi.org/10.1201/b11704-14.

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"Wire-Mesh Regenerator - ‘Back of Envelope’ Sums." In Stirling Cycle Engines. John Wiley & Sons Ltd, 2013. http://dx.doi.org/10.1002/9781118818428.ch17.

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"Implications of Regenerator Figure of Merit in Actual Stirling Engines." In Stirling Convertor Regenerators. CRC Press, 2011. http://dx.doi.org/10.1201/b11704-22.

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Conference papers on the topic "Stirling engine regenerator"

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Watanabe, Hiroichi, Yuichi Fujisawa, Shinji Moriya, and Naotsugu Isshiki. "Characteristics of Stirling engine regenerator." In 35th Intersociety Energy Conversion Engineering Conference and Exhibit. American Institute of Aeronautics and Astronautics, 2000. http://dx.doi.org/10.2514/6.2000-3024.

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Yanaga, Koji, Yuan Gao, Ruijie Li, and Songgang Qiu. "Stirling Engine Robust Foil Regenerator Efficiency." In ASME 2019 International Mechanical Engineering Congress and Exposition. American Society of Mechanical Engineers, 2019. http://dx.doi.org/10.1115/imece2019-11382.

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Abstract Combined Heat and Power (CHP) systems are one of the solutions to save energy by utilizing waste heat for addressing global warming and the global energy crisis. In many CHP technologies, the Stirling engine is outstanding since it has the advantage of various energy sources such as solar, geothermal, and industrial heat waste. The regenerator plays a key role in building a high efficiency Stirling Engine. Since it works as an energy storage component in the Stirling engine, its performance directly affects the Stirling engine efficiency. In the previous research, a new regenerator called the robust foil regenerator was designed to improve the performance of the regenerator. The regenerator was manufactured through the method of additive manufacturing techniques since the thickness of each flow channel is 0.3mm. In this research, a test bench was designed and manufactured to reveal the characteristics of the regenerator experimentally. By measuring the pressure drop and the temperature difference through the regenerator, the friction coefficient and the Nusselt number correlations were derived respectively. These correlations were compared to the published friction factor and Nusselt number correlations. In addition, to evaluate the geometrical configuration of the regenerator, the NPH/NTU ratio was calculated using the derived friction coefficient and Nusselt number.

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Gheith, Ramla, Fethi Aloui, Mohand Tazerout, and Sassi Ben Nasrallah. "Study of the Regenerator Porosity Influence on Gamma Type Stirling Engine Performances." In ASME-JSME-KSME 2011 Joint Fluids Engineering Conference. ASMEDC, 2011. http://dx.doi.org/10.1115/ajk2011-17013.

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In this study, a Gamma type Stirling engine with compressed air as working fluid have been experimented. This engine operates at a maximum charge pressure of 10 bars. It runs at a maximum speed of 600 rpm, and can provide 500 W of brake power on the shaft. This Stirling engine setup was equipped with thermocouples and pressure sensors in order to measure the instantaneous temperatures and pressures. The regenerator is the key element of the Stirling engine. Its geometrical and physical properties influence directly on the engine performances. Our experimental study was focused on the regenerator, and especially on its porosity and its constituting material. We have initially made our experiments for 4 different regenerators material’s constituted of: Stainless steel, Copper, Aluminum and Monel 400. Secondly, we have experimented 3 regenerators made of copper with different porosities. From the obtained results, we conclude that the regenerator have an important role to enhance heat exchanges and to improve the Stirling engine performances. Indeed, these performances are also function of the porosity of each material constituting the regenerator, which conditions the quality and the quantity of heat exchanged in the Stirling engine.

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Shendage, D. J., S. B. Kedare, and S. L. Bapat. "Investigations on Performance of Stirling Engine Regenerator Matrix." In ASME/JSME 2011 8th Thermal Engineering Joint Conference. ASMEDC, 2011. http://dx.doi.org/10.1115/ajtec2011-44052.

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Stirling engine technology has attracted attention due to recent environmental and energy problems. The regenerator is the main component in high efficiency Stirling engines. A suitable regenerator must be designed for each Stirling machine to provide high performance. The aim of the present work is to find a feasible number of screens in regenerator by taking into account the pressure drop, dead volume, the thermal penetration depth and geometry of regenerator. The second order cyclic analysis with realistic assumptions is carried out for a single cylinder, beta Stirling engine with rhombic drive for predecided operating conditions, such as pressure of 30 bar, hot side temperature of 750 K, speed of 1440 rpm and hydrogen as the working fluid. It is intended to design and develop the Stirling engine with capacity ≥ 1.5 kWe and the efficiency of drive mechanism and alternator is assumed as 85% each. Miyabe’s and Martini’s approaches are used to simulate regenerator performance considering non-sinusoidal motion of displacer and piston. The results reveal that the flow loss increases remarkably to attain higher value of regenerator effectiveness. However, increase in the speed results into an increase in the mass flow rate of the working fluid. It is observed that regenerator effectiveness decreases only marginally over the range of speeds considered. It is also ensured for selected regenerator screen that the thermal penetration depth (239 μm) should be greater than wire radius of mesh (20.5 μm). For present set of operating and geometrical parameters, length of regenerator is fixed as 22 mm which gives regenerator effectiveness as 0.965. Further, the practice to fill more screens than the designed number of screens in the regenerator, while assembling is not advantageous. It increases pressure drop which results in reduced power output. These are some of the important conclusions.

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Moriya, Shinji, Naotsugu Isshiki, and Susumu Kikuchi. "Regenerator Elements for Internal Combustion Stirling Engine." In 27th Intersociety Energy Conversion Engineering Conference (1992). SAE International, 1992. http://dx.doi.org/10.4271/929387.

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Hofacker, Mark, James Kong, and Eric J. Barth. "A Lumped-Parameter Dynamic Model of a Thermal Regenerator for Free-Piston Stirling Engines." In ASME 2009 Dynamic Systems and Control Conference. ASMEDC, 2009. http://dx.doi.org/10.1115/dscc2009-2741.

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This paper uses lumped parameter dynamic equations to model the mass flow, piston dynamics, and control volume behavior inside a free-piston Stirling engine. A new model for a Stirling engine thermal regenerator that incorporates a dynamically changing temperature gradient is presented. The use of graphite as a regenerator matrix material is justified despite its limited background by comparing the functional requirements of regenerators to heat exchangers where graphite use is commonplace. Experimental results are used to characterize a graphite regenerator and validate the dynamic model.

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Yanaga, Koji, and Songgang Qiu. "Experimental Investigation of Stirling Engine Robust Foil Regenerator." In AIAA Propulsion and Energy 2019 Forum. American Institute of Aeronautics and Astronautics, 2019. http://dx.doi.org/10.2514/6.2019-3974.

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Rogdakis, E., P. Bitsikas, and G. Dogkas. "Study of Gas Flow Through a Stirling Engine Regenerator." In ASME 2017 International Mechanical Engineering Congress and Exposition. American Society of Mechanical Engineers, 2017. http://dx.doi.org/10.1115/imece2017-70157.

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In the present work, a three dimensional (3D) Computational Fluid Dynamics (CFD) analysis is applied to a designed small compact regenerator with specific porosity and wire diameter. The regenerator was studied as a part of a Stirling Engine designed in a simple way. The gas temperature along the regenerator followed an approximately linear profile, while the metal temperature showed a small deviation during the engine cycle. The heat transfer coefficient between the gas and the matrix of the regenerator, along with the associate heat transferred were also derived. The heat exchanged in the regenerator is significantly higher to the respective heat in the engine’s heater and cooler. Additionally, the pressure drop and the related energy dissipation are studied. Their variation is largely dependent on both mass flow-rate and working gas velocity. The friction factor coefficient for the designed regenerator is correlated with Reynolds number and an equation of two variables is derived. Finally, the results of the CFD simulation are compared to those produced by a one-dimensional numerical model. These results include gas mass, mass flow-rate and Reynolds number, as well as the heat transferred between the gas and the regenerator matrix. Except for the case of the exchanged heat, the deviation between the two approaches is very small.

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Kitahama, Dai, Hidekazu Takizawa, Atsushi Matsuguchi, Noboru Kagawa, and Seizo Tsuruno. "Performance of New Mesh Sheet for Stirling Engine Regenerator." In 1st International Energy Conversion Engineering Conference (IECEC). American Institute of Aeronautics and Astronautics, 2003. http://dx.doi.org/10.2514/6.2003-6015.

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Watanabe, Hiroichi, Yuichi Fujisawa, Munenobu Yoshida, Shinji Moriya, Michihiro Ohtomo, and Naotsugu Isshiki. "A Study on Temperature Distribution of Stirling Engine Regenerator." In 34th Intersociety Energy Conversion Engineering Conference. SAE International, 1999. http://dx.doi.org/10.4271/1999-01-2506.

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Reports on the topic "Stirling engine regenerator"

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Hull, D. R., D. L. Alger, T. J. Moore, and C. M. Sheuermann. Fatigue failure of regenerator screens in a high frequency Stirling engine. Office of Scientific and Technical Information (OSTI), 1987. http://dx.doi.org/10.2172/10181591.

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