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/content/aip/journal/apl/105/14/10.1063/1.4897621
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http://dx.doi.org/10.1088/0960-1317/14/1/309
http://aip.metastore.ingenta.com/content/aip/journal/apl/105/14/10.1063/1.4897621
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/content/aip/journal/apl/105/14/10.1063/1.4897621
2014-10-09
2016-12-03

Abstract

Heat engines utilizing the Stirling cycle may run on low temperature differentials with the capacity to function at high efficiency due to their near-reversible operation. However, current approaches to building Stirling engines are laborious and costly. Typically the components are assembled by hand and additional components require a corresponding increase in manufacturing complexity, akin to electronics before the integrated circuit. We present a simple and integrated approach to fabricating Stirling engines with precisely designed cylinders. We utilize computer aided design and one-step, planar machining to form all components of the engine. The engine utilizes liquid pistons and displacers to harness useful work from heat absorption and rejection. As a proof of principle of the integrated design, a two-cylinder engine is produced and characterized and liquid pumping is demonstrated.

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