کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
5475447 | 1521411 | 2017 | 24 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Thermodynamic study of main compression intercooling effects on supercritical CO2 recompression Brayton cycle
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی انرژی
انرژی (عمومی)
پیش نمایش صفحه اول مقاله
چکیده انگلیسی
Supercritical CO2 recompression Brayton cycle has emerged as a promising power cycle for various types of power conversion systems. In order to seek further performance improvement of supercritical CO2 recompression Brayton cycle, thermodynamic effects of main compression intercooling (MCIC) are investigated in this work. Mathematical models were developed for Supercritical CO2 recompression Brayton cycle with MCIC. Two key variable parameters, i.e., compressor pressure ratio and pressure ratio distribution between two main compression stages (represented with RPRMC,1), were optimized. Effects of working conditions on MCIC effects and the optimized parameters were investigated. A comprehensive comparison between cycles with and without MCIC was performed in four typical conditions from both design and off-design viewpoints. Results show that RPRMC,1 is more predominant to cycle efficiency than compressor pressure ratio. 2.65% efficiency improvement can be obtained by the integration of MCIC in the reference conditions. The variations of working conditions impact MCIC effects on cycle efficiencies. The optimized results of compressor pressure ratio and RPRMC,1 are affected by the variation of minimum temperature, maximum temperature and maximum pressure. In addition to cycle efficiency improvement, the integration of MCIC also shows potentials in costs saving and cycle robustness improvement.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Energy - Volume 140, Part 1, 1 December 2017, Pages 746-756
Journal: Energy - Volume 140, Part 1, 1 December 2017, Pages 746-756
نویسندگان
Yuegeng Ma, Ming Liu, Junjie Yan, Jiping Liu,