Image:Beta stirling animation.gif

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Beta_stirling_animation.gif‎ (453 × 189 pixels, file size: 2.9 MB, MIME type: image/gif)

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[edit] Summary

Description	Beta Stirling engine animation
Source	self-made
Date	created 2007-03-03
Author	Van helsing
Permission (Reusing this image)	see below
Other versions	1: frame 60 2: frame 90 3: frame 01 4: frame 30

[edit] Licensing

I, the copyright holder of this work, hereby publish it under the following licenses: Permission is granted to copy, distribute and/or modify this document under the terms of the GNU Free Documentation License, Version 1.2 or any later version published by the Free Software Foundation; with no Invariant Sections, no Front-Cover Texts, and no Back-Cover Texts. Subject to disclaimers. Asturianu | Български | Català | Deutsch | English | Español | Français | Gaeilge | Italiano | 한국어 | 日本語 | Polski | Português | Română | Türkçe | +/- This file is licensed under Creative Commons Attribution 2.5 License In short: you are free to distribute and modify the file as long as you attribute its author(s) or licensor(s). You may select the license of your choice.

[edit] Action of a Beta type Stirling engine

	1. The displacer piston (2) has moved most of the gas to the hot heat exchanger, as a result the gas is heated up and expanding. The power piston (1) is being pushed away, this is the power stroke.
	2. The heated gas increases its pressure and pushes the power piston along the cylinder towards its top dead centre (TDC). Meanwhile, the displacer piston is moving the heated gas to the cold zone.
	3. The heated gas is cooling down, decreasing its volume. The displacer piston has moved most of the gas to the cold zone of the cylinder. The power piston is compressing the gas by the flywheel momentum. This takes less energy because the gas pressure is decreasing.
	4. The cooled gas has decreased its volume and pressure, the power piston is at its bottom dead centre (BDC). Meanwhile, the displacer piston is moving the cooled gas to the heated zone, so the gas can heat up and expand again, pushing the power piston away.
	Animated version. In this example, the power piston lags the displacer piston by 90°. In this design the displacer piston shaft passes through the power piston in a gas proof sleeve.

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