The pulse tube engine: A numerical and experimental approach on its design, performance, and operating conditions

The pulse tube engine is a simple heat engine based on the pulse tube process. Due to its simplicity it has a high potential to be applicable in waste heat usage and energy harvesting purposes. In this work, mathematical and experimental design tools are developed to study a pressurized laboratory s...

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Veröffentlicht in:Energy (Oxford) 2013-06, Vol.55, p.703-715
Hauptverfasser: Moldenhauer, Stefan, Stark, Tilman, Holtmann, Christoph, Thess, André
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container_title Energy (Oxford)
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creator Moldenhauer, Stefan
Stark, Tilman
Holtmann, Christoph
Thess, André
description The pulse tube engine is a simple heat engine based on the pulse tube process. Due to its simplicity it has a high potential to be applicable in waste heat usage and energy harvesting purposes. In this work, mathematical and experimental design tools are developed to study a pressurized laboratory scale pulse tube engine. The mathematical model is based on the transient numerical solution of the governing differential equations for mass, momentum and energy. The Modelica environment of SimulationX is used to solve the equations numerically and the model is employed to design the experimental test engine with helium as working fluid. The transient behavior of the pulse tube engine's underlying thermodynamic properties is studied numerically and experimentally under different design parameters as well as for different heat input temperatures, filling pressures and operating frequencies. The measured engine characteristics are compared with the calculated predictions. Internal and external power losses are quantified. Design studies for a further development of the pulse tube engine are performed experimentally. The developed numerical tool provides a rational framework for up-scaling the current laboratory model to industrial scale. •We developed a mathematical model and an experimental test engine to study the pulse tube engine.•The experimental test engine is able to operate with pressurized helium of up to 12 bar filling pressure.•We characterized and compared the engine's behavior under different design features and operating conditions.•Design studies for a further development of the pulse tube engine are performed experimentally.
doi_str_mv 10.1016/j.energy.2013.03.052
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subjects Applied sciences
Energy
Energy conversion
Energy. Thermal use of fuels
Engines and turbines
equations
Equipments for energy generation and conversion: thermal, electrical, mechanical energy, etc
Exact sciences and technology
experimental design
heat
Heat engine
helium
mathematical models
Modelica
momentum
prediction
Pulse tube engine
temperature
Thermoacoustics
Waste heat
title The pulse tube engine: A numerical and experimental approach on its design, performance, and operating conditions
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