스크롤형 에릭슨 사이클 엔진의 열역학적 특성 연구

The Ericsson cycle is very much like the Stirling cycle, except that the processes of constant-volume regenerative heat transfer are replaced by constant-pressure regenerative processes. The efficiency of the Ericsson cycle is the same as that of the Carnot cycle, as in the Stirling cycle. But in the both cases, in spite of the high potentiality of the cycles, it is very difficult to realize the ideal cycle, because neither the isothermal compression nor isothermal expansion in the cylinder or with the turbomachinery is practical due to the insufficient heat transfer. In this paper, it was proposed that the scroll-type compressor and expander is fairly suitable for approaching the isothermal compression and expansion processes due to the area to volume ratio of scroll geometry and good gas to scroll heat transfer. And the thermodynamic characteristics of the proposed Ericsson cycle engine was investigated.