A Liquid Piston Stirling Engine with Float-Type Linear Alternator for Electricity Generation: An Effect of Coil Geometry

DOI

10.2991/978-94-6239-687-6_4How to use a DOI?

Keywords

Liquid Piston; Linear Alternator; Electric Generator

Abstract

Liquid Piston Stirling Engine (LPSE), also known as the Fluidyne engine, is a simple external combustion engine that converts low-temperature thermal energy into mechanical oscillations using air and water as working fluids. While previous applications of LPSE have primarily focused on water pumping in remote areas, its potential for electricity generation remains largely unexplored. This study experimentally demonstrates the feasibility of generating electricity using an LPSE equipped with a float-type linear alternator. The experimental setup consists of an LPSE and a simple linear alternator using a floating permanent magnet. Various coil configurations were tested to optimize the induced voltage output. Results show that the integration of the linear alternator has minimal impact on the LPSE’s performance, with onset temperature increasing by only 10 K. The highest induced voltage was achieved with a coil using 0.15 mm wire diameter and 25 mm length, generating a maximum power output of 2.27 mW at an optimal load resistance of 450 Ω. These findings validate the LPSE’s potential as a simple solution for electricity generation in remote and off-grid areas.

Copyright

© 2026 The Author(s)

Open Access

Open Access This chapter is licensed under the terms of the Creative Commons Attribution-NonCommercial 4.0 International License (http://creativecommons.org/licenses/by-nc/4.0/), which permits any noncommercial use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license and indicate if changes were made.

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TY  - CONF
AU  - Eko Yuwono Putro
AU  - Prastowo Murti
AU  - Adhika Widyaparaga
AU  - I Made Miasa
PY  - 2026
DA  - 2026/05/24
TI  - A Liquid Piston Stirling Engine with Float-Type Linear Alternator for Electricity Generation: An Effect of Coil Geometry
BT  - Proceedings of the 8th Mechanical and Industrial Engineering Symposium (MIE 2025)
PB  - Atlantis Press
SP  - 28
EP  - 37
SN  - 2589-4943
UR  - https://doi.org/10.2991/978-94-6239-687-6_4
DO  - 10.2991/978-94-6239-687-6_4
ID  - Putro2026
ER  -