A03 指圧線図から見る低温度差スターリングエンジンの問題点(スターリングエンジン及び関連要素と応用システム(1))

概要

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Indicated diagrams of low temperature differential Stirling engine (LTDSE) were measured experimentally. The temperatures of the heat exchangers and working fluid were also measured at the hot side and the cold side, simultaneously. The LTDSE of which indicated diagrams were measured had the cylindrical displacer chamber which had the height of 45mm and the bore of 128mm. The stroke volume of the power piston is 3.9cc. The Compression ratio was 1.009. The heat source of the LTDSE was steam. Cooling of the cold side heat exchanger was done by air cooled or air cooled with the water spray. The atmospheric temperature was controlled at 20 degree Celsius. The experimental data make clarify the things mentioned bellow. Although the experimental temperature difference in displacer chamber was about 20 to 30 degree Celsius, the temperature difference which is calculated from the data of indicated diagrams based on the assumption that the temperature of working fluid is uniform is about 3 to 6 degree Celsius. The compression and expansion by the power piston caused temperature difference of working fluid even in LTDSE. The indicated work has relation with the temperature difference between the heat exchangers of cold side and hot side. Temperature distribution on the surface of the cold side heat exchanger was not uniform.
一般社団法人日本機械学会の論文
2011-12-07