A novel spiral regenerator suitable for MICSE and the study on its hybrid thermodynamic cycle

作者：Zhang Zhiguang^*; Huang Guoping; Xia Chen; Xu Yikai

来源：14th International Energy Conversion Engineering Conference, 2016-07-25 to 2016-07-27.

The regenerative ability of MICSE is studied and a spiral regenerator is developed to improve its efficiency in this paper. With a novel regenerator fixed around, the multi-chamber structure for this engine changes, as one chamber is slightly larger the others. This unique larger chamber works in two-stroke cycle, while the other ones with equal volume in four-stroke cycle. Also, only hot exhaust can be compressed into the regenerator for the large one, however both hot exhaust and pre-compressed gas-mixture in the rest ones can flow into the regenerator. In consequence, this special hybrid power cycle, i.e., a chamber in two-stroke cycle and the others in four-stroke cycle exist at the same time in one engine, has not only overcome the operating difficulty caused by the added regenerator but also reduced energy lost by restraining heat leak and recycling the residual heat exits. From the comparison of temperature-entropy diagram for a complete power cycle of engine with and without regenerator, it is deduced that, the mixed power cycle is able to create remarkable thermal-efficiency rise. Applied to the mechanical model in University of Michigan, the efficiency increases by 4.19%.

• 出版日期2016
• 单位南京大学