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Reflections on Free-Piston Stirling Engines, Part 2: Stable Operation
Journal of Propulsion and Power, 1998Abstract: In this paper a new linearization technique of the dynamic balance equations of a free-piston Stirling machine is developed. It takes into account the non-linear thermo-fluid-dynamic terms inherent in the machine, while keeping the linearity of the differential dynamic equations.
DE MONTE, FILIPPO, BENVENUTO G.
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Large Free-Piston Stirling Engines
1985The word ‘large’ applied to Stirling engines means different things to different people. An engine having a 3 kW output would be large to those working on artificial hearts or cryocoolers for electronic applications. It would be small, negligibly so, to those interested in locomotive propulsion.
Graham Walker, J. R. Senft
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Axially Opposed Magnetization for Free Piston Stirling Engines
International Journal of Applied Electromagnetics and Mechanics, 2013A renewed focus on Free Piston Stirling Engines (FPSE) for Green Solar based power generation provides a vehicle to explore linear alternator technologies for improved performance and efficiency. This paper evaluates Axially Opposed Magnetization (AOM) linear alternators and the potential advantages this technology provides mechanically and ...
Rogers, Uri +4 more
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Control-based design of free-piston stirling engines
2008 American Control Conference, 2008A control-based analysis and characterization of a free-piston Stirling engine is presented, and proposed as a lightweight power supply for untethered robots. Typically, such devices are designed from the point of view of a thermodynamic cycle in terms of traditional thermodynamic equations of state.
Jose A. Riofrio +3 more
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Optimization of a dual free piston Stirling engine
Applied Thermal Engineering, 2007This work relates the theoretical study of the dynamic behavior of a dual free-piston Stirling engine (DFPSE) coupled with an asynchronous linear alternator. This machine integrates one piston and two displacers placed in a symmetrical way compared to the piston to improve the stability of the machine.
Boucher, Julien +2 more
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Structural design of Stirling engine with free pistons
AIP Conference Proceedings, 2014Stirling engine is a device that converts thermal energy to mechanical work, which is mostly used to drive a generator of electricity. Advantage of Stirling engine is that it works with closed-cycle, where working medium is regularly cooled and heated, which acts on the working piston. This engine can be made in three modifications - alpha, beta, gamma.
Jozef Matusov +2 more
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A Fractional Horsepower Free-Piston Stirling Engine-Pump
6th International Energy Conversion Engineering Conference (IECEC), 2008Stirling cycle engines offer potential advantages over internal combustion engines in fuel choices, noise, and emissions. A free-piston Stirling cycle engine-pump (FPSEP) has been investigated for potential use in human-scale, fractional horsepower applications.
Sutapat Kwankaomeng +3 more
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Specific Power Estimations for Free-Piston Stirling Engines
4th International Energy Conversion Engineering Conference and Exhibit (IECEC), 2006NASA seeks high-power conversion systems for space applications and their requirements emphasize high efficiency and low mass. This paper presents preliminary designs and specific power estimates of high efficiency, free-piston Stirling machines for 5 kWe , 10 kWe and 25 kWe outputs.
Seon-Young Kim, David Berchowitz
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Key Techniques for Designing Free Piston Stirling Engine
2012 Asia-Pacific Power and Energy Engineering Conference, 2012In order to satisfy the requirement of power system for deep-space exploration, key issues for designing free piston Stirling engine were analyzed. With the thermodynamic and kinetic coupling designing ideas, we designed a set of free piston Stirling engine whose output power is 100W at operating pressures 8bar, hot space temperatures 700K, and cold ...
Hongshu Jia +3 more
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Palm Power Free-Piston Stirling Engine Control Electronics
AIP Conference Proceedings, 2007A prototype 35We, JP‐8 fueled, soldier‐wearable power system for the DARPA Palm Power program has been developed and tested by Sunpower. A hermetically‐sealed 42We Sunpower Free‐Piston Stirling Engine (FPSE) with integral linear alternator is the prime mover for this system.
Douglas E. Keiter, Ezekiel Holliday
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