Simulation, manufacture and experimental validation of a novel single-acting free-piston Stirling engine electric generator

Bat, B.J.G. de la; Dobson, Robert T.; Harms, Thomas; Bell, Arthur

doi:10.1016/j.apenergy.2020.114585

Cited by 30 publications

(5 citation statements)

References 22 publications

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“…Microgen Engine Corporation is a consortium of the gas boiler companies Viessmann, Baxi, Vaillant and Remeha and Sunpower [22,50]. The most suitable Microgen FPSE for domestic houses produces alternating current (50 Hz) and provides 1 kW of electrical power [51,52]. The displacer pushes helium through the regenerator from the head to the cooler; the spring on the opposite case at the bottom pushes the piston back upwards; the helium is alternately heated and cooled, and as a result it expands and contracts, creating cyclic pressure waves 50 times per second, generating AC power at 50 Hz [51].…”

Section: Micro Combined Heat and Powermentioning

confidence: 99%

“…The order increases as the number of idealizing assumptions decreases [27,63]. Zero-order, first-order, second-order and third-order models can be considered [2,52,58].…”

Section: Free-piston Stirling Engine Modelingmentioning

confidence: 99%

“…In some works [52,58,[88][89][90][91], Microgen FPSE and similar prototypes have been set as reference to study micro-CHP performance and to verify model's results. Instead, few works on Qnergy (formerly Infinia) can be found in literature [20,92,93], mainly focusing on the past Technology Demonstration Convertor (TDC) designed by the Stirling Technology Company (STC), later Infinia Corporation.…”

Section: 𝑀 𝑥 = (𝑝 − 𝑝 )𝐴 − 𝐶 + 𝐶 𝑥mentioning

confidence: 99%

See 2 more Smart Citations

Free-Piston Stirling Engine Technologies and Models: A Review

Perozziello

Grosu

Vaglieco³

2021

Energies

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The Stirling engine is an alternative solution to produce cleaner energy in order to achieve the reduction of the fossil fuel consumption and the CO2 emissions. It comprises an external combustion engine that can convert any external heat source into mechanical power, through cyclic expansion and compression of a working gas in a closed-regenerative cycle, with or without driving mechanisms. The free-piston Stirling Engine is significantly preferred because of the absence of any mechanical linkage resulting in longer operating life, lower noise pollution, maintenance and vibration free, self-starting and high thermal efficiency. The aim of this paper is to summarize the research works on the free-piston Stirling engine technologies and models. First, the working principles of the free-piston Stirling engine are described, identifying different configurations. Then, several applications are presented. Finally, a detailed review of the models available in literature is given, pointing out the main assumptions and equations.

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Section: Micro Combined Heat and Powermentioning

confidence: 99%

“…The order increases as the number of idealizing assumptions decreases [27,63]. Zero-order, first-order, second-order and third-order models can be considered [2,52,58].…”

Section: Free-piston Stirling Engine Modelingmentioning

confidence: 99%

Section: 𝑀 𝑥 = (𝑝 − 𝑝 )𝐴 − 𝐶 + 𝐶 𝑥mentioning

confidence: 99%

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Free-Piston Stirling Engine Technologies and Models: A Review

Perozziello

Grosu

Vaglieco³

2021

Energies

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“…ASRG are radioisotope power systems that implement a Stirling power conversion system to convert radioactive-decay heat into electricity. It is estimated that ASRGs can be as about four times more efficient previous RTGs [52].…”

Section: Power Generation Modulementioning

confidence: 99%

Near-term self-replicating probes - A concept design

Borgue¹,

Hein²

2021

Acta Astronautica

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“…A parametric analysis is required before the integration to set the most optimized condition to yield maximum performance out of it [25]. Post-simulation, a dynamic model should be set to understand the experimental performance of the PMLA in real-time operable conditions [26,27].…”

Section: Introductionmentioning

confidence: 99%

Design of a Slot-Spaced Permanent Magnet Linear Alternator Based on Numerical Analysis

Cheng

Dhanasekaran

2022

Energies

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Linear alternators work seamlessly with Free-Piston Stirling Engines (FPSE) in the energy conversion process. This research concentrates on the design and development of a tubular slot-spaced Permanent Magnet Linear Alternator (PMLA) to be coupled with the FPSE. In an attempt to increase the power density of the machine over conventional PMLAs, a slot space is added to reduce the total mass of the stator and a parametrical study is carried out for the same. Numerically analyzing the fundamental parameters such as change of stator and magnet materials, and operating conditions frequency and stroke length. The effects of slotting are studied to understand the skinning effects on the tooth and the performance variation of the machine. A modified model is obtained to surpass 100 W from the numerical analysis of the parametric variations. Putting the machine to extreme limitations, the study conducted upon variations of parameters obtained a stable maximum power density of 186 W/kg and produced a power of 921 W for the designed PMLA. The study outlines the variation seen in the performance of the machine in such diverse conditions they go through during their life cycle.

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Simulation, manufacture and experimental validation of a novel single-acting free-piston Stirling engine electric generator

Cited by 30 publications

References 22 publications

Free-Piston Stirling Engine Technologies and Models: A Review

Free-Piston Stirling Engine Technologies and Models: A Review

Near-term self-replicating probes - A concept design

Design of a Slot-Spaced Permanent Magnet Linear Alternator Based on Numerical Analysis

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