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Predicting onset conditions of a free piston Stirling engine
Applied Energy, 2020Abstract This research predicts the onset conditions of the free piston Stirling engines using analytical solution of the governing equations and averaging-based Lyapunov technique. In this regard, firstly, the linear dynamic equations of the free piston Stirling engines are extracted.
Shahryar Zare, A.R. Tavakolpour-Saleh
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Reflections on Free-Piston Stirling Engines, Part 1: Cyclic Steady Operation
Journal of Propulsion and Power, 1998Abstract: In spite of the conceptual simplicity, the design of the free-piston Stirling engines (FPSEs) is made difficult by the necessity to accurately foresee the effect of the various geometric, dynamic, and thermodynamic variables on their behavior. This paper describes a fully developed mathematical model able to characterize these machines taking
DE MONTE, FILIPPO, BENVENUTO G.
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Regenerator Losses in a Free Piston Stirling Engine
2016Due to the need for alternative means that can be used to generate power with high efficiency and less harm to the environment, the free piston Stirling engine has emerged and research has been carried out to prove its relevance. This study is carried out in the thermal energy conversion unit, using solar energy to generate power.
Ayodeji Sowale, Sarah Odofin
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Vibration absorber for a free piston stirling engine
The Journal of the Acoustical Society of America, 1986A free piston Stirling engine has a hermetic vessel containing a displacer piston and a power piston coupled to each other and to the vessel by gas springs. An additional mass is coupled to the vessel by a gas spring which is tuned to the operating frequency of the engine geometrically.
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Free-Piston Stirling Engine-Driven Heat Pump Program Plan
22nd Intersociety Energy Conversion Engineering Conference, 1987Stirling engine driven heat pumps are one of the most attractive potential products based on Stirling engines. Their many advantages in efficiency, fuel adaptability, quietness, compactness, controllability and potential for high reliability are well known.
B. A. Ross, R. A. Hutchinson, F. C. Chen
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Dynamic analysis of a simplified free-piston Stirling engine
SIMULATION, 1980Lumped-volume dynamic equations are derived using an energy-state formulation. This technique requires the writing of state functions for kinetic and poten tial energy. A Rayleigh dissipation function accounts for losses in the system. Using these functions, a Lagrangian is formed and the equations of motion for the system are derived.
Carl J. Daniele, Carl F. Lorenzo
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Maximum Work of Free-Piston Stirling Engine Generators
Journal of Non-Equilibrium Thermodynamics, 2016Abstract Using the method of adjoint equations described in Ref. [1], we have calculated the maximum thermal efficiencies that are theoretically attainable by free-piston Stirling and Carnot engine generators by considering the work loss due to friction and Joule heat.
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Radioisotope-powered free-piston Stirling engine for space applications
Acta Astronautica, 1980Abstract The paper presents a preliminary conceptual design of a 2kW(e) autonomous power system consisting of a radioisotopic heat source, free-piston Stirling engine, reciprocating induction generator and a space radiator. The proposed design features a direct thermal interfacing of the Pu-238 heat source with the Stirling engine head, low heat ...
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Free Piston Stirling Engines - Some Model Tests and Simulations
SAE Technical Paper Series, 1969<div class="htmlview paragraph">Model tests of several 0.1 hp free piston Stirling cycle engines were made. They showed good piston displacer phasing and thermal efficiency in the 10% range. An instructive isothermal computer simulation was developed which compared reasonably well with model data and allowed investigation of parameter changes ...
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