000K  utf8
1100  2023$c2023-04-27
1500  eng
2050  urn:nbn:de:hbz:465-20230427-143506-8
2051  10.17185/duepublico/77319
3000  Sauerborn, Markus
3010  Bohn, Jürgen
3010  Brenner, Jens
3010  Enneking, Martin
3010  Schmitz, Ulrich
4000  Design and testing of a supercritical CO2 compander for 2 MW output power  [Sauerborn, Markus]
4209  Around the globe, there has been a growing interest in using sCO2 power cycles to recover waste heat from various heat sources. This paper will focus on the case of a supercritical CO2 compander designed, built, tested, and supplied by the authors’ company. The compander is applied in a Brayton cycle to recover waste heat from a gas engine providing the output power to a generator connected to a gear box via a coupling. To design the heatrecovery cycle with the highest possible efficiency, a lowoperation temperature at the compressor inlet was required. At the given pressure, this leads to a subcooled fluid. With support from the client and additional internal studies, it was confirmed that this suction condition at the compressor inlet will lead to the lowest power consumption on the compression side. This, in turn, results in the highest cycle efficiency, in addition to a small machinery footprint. Therefore, the solution fits into marine applications or other projects which face space constraints. During the compression process, a phase change of the CO2 from the subcooled to the supercritical state occurs with a low temperature and density change. CFD simulations of the compression process were performed in advance, considering the real fluid behavior near the critical point. This paper presents the test results and a comparison with the CFD analysis.
4950  https://doi.org/10.17185/duepublico/77319$xR$3Volltext$534
4950  https://nbn-resolving.org/urn:nbn:de:hbz:465-20230427-143506-8$xR$3Volltext$534
4961  https://duepublico2.uni-due.de/receive/duepublico_mods_00077319
5051  620