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김현진,박익서,라필찬 대한설비공학회 2005 설비공학 논문집 Vol.17 No.4
This paper addresses the development of a scroll expander for power generation from relatively low temperature steam source. It has a double-sided orbiting scroll member so that no thrust bearing is needed to support the base plate of the orbiting scroll. Three power transmission shafts are placed at the periphery of the orbiting scroll base plate, and these shafts can also function as anti-rotation devices. Final output is obtained from the main central shaft engaged with the three power transmission shafts through gear assembly. The clearance between the fixed and orbiting scroll elements was estimated by comparing measurement of the mass flow rate with calculation results of a computer simulation. Due to large clearance, the expander total and volumetric efficiencies were measured to be 34% and 43%, respectively. It has been shown through the computer simulation that the total and volumetric efficiencies could be improved to 65% and 83%, respectively, if the current clearance is reduced by half.
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오일 충전량 변화에 따른 사판식 압축기 성능의 실험적 고찰
김민준(Min-Jun Kim),박익서(Ik-Seo Park),이건호(Geon-Ho Lee) 한국유체기계학회 2003 유체기계 연구개발 발표회 논문집 Vol.- No.-
The automobile air conditioning system generally consists of laminated type evaporator, swash plate type compressor, condenser, expansion valve and receiver drier. A swash plate type compressor has been used widely in automobile air conditioning system since 1955, because of wider operation range and better durability than other type compressors.<br/> In this study, the performance of an swash plate type compressor with variations of oil charging conditions has been investigated experimentally using the hot gas system. Further, the effects of varying compressor speed on the performance of the compressor has been discussed.
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