Analyses on Working Frequency of a γ-type Free-piston Stirling Engine

Title
Analyses on Working Frequency of a γ-type Free-piston Stirling Engine
Authors
장선준심규호이윤표
Keywords
Free Piston Stirling Engine; Feedback structure; Operational Frequency; Self-excitation; Gamma type; expansion space; Displacer Piston; compression space; Power Piston; Energy Conversion
Issue Date
2013-07
Publisher
한국소음진동공학회논문집
Citation
VOL 23, NO 7, 654-661
Abstract
The dynamic characteristics of a free-piston stirling engine(FPSE) with regard to the working frequency is investigated from theoretical and experimental studies. The FPSE is modeled as a two degree-of-freedom linear vibration system. A theoretical expression on the working frequency is derived from the instability condition for self-excitation based on the linear vibration model. A γ-type free-piston stirling engine is fabricated for experimental studies, and its working frequency is measured on various heater temperatures. Comparisons between the theoretical and experimental results reveal that the working frequency of the test FPSE depends on both the temperature of the compression space and the temperature difference between the expansion and compression spaces.
URI
http://pubs.kist.re.kr/handle/201004/45856
ISSN
15982785
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KIST Publication > Article
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