Helium is hard to be compressed with the traditional way of air compression because of thermophysical properties differences between helium and air, which would result in helium compressor being of much more stages and shorter blades. In this paper, based on the flowing features of helium, that is, the higher sound speed, the lower Mach number etc. which are also due to the specific thermophysical properties of helium, the design method of a highly loaded helium compressor is investigated in detail. The relationships between the highly loaded helium compressor flow coefficient, load coefficient, reaction degree and its efficiency and pressure ratio are systematically discussed. Then, to meet the higher efficiency and reliability requirements, unequal spanwise work distribution technique is implemented. The results indicate that a 16 stages helium compressor of a 300MW HTGR can be reduced to a 3 stages compressor by the highly loaded design method proposed in this paper, under the condition of the same tip tangential velocity. The polytropic efficiency is 90%, which is higher than that of the previous 16 stages compressor.
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ASME Turbo Expo 2017: Turbomachinery Technical Conference and Exposition
June 26–30, 2017
Charlotte, North Carolina, USA
Conference Sponsors:
- International Gas Turbine Institute
ISBN:
978-0-7918-5078-7
PROCEEDINGS PAPER
Investigation on the Highly Loaded Helium Compressor Based on Helium Thermophysical Properties: Part A — The Design of Highly Loaded Axial Helium Compressor Available to Purchase
Zhitao Tian,
Zhitao Tian
Harbin Engineering University, Harbin, China
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Qun Zheng,
Qun Zheng
Harbin Engineering University, Harbin, China
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Bin Jiang,
Bin Jiang
Harbin Engineering University, Harbin, China
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Qingfang Zhu
Qingfang Zhu
Harbin Engineering University, Harbin, China
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Zhitao Tian
Harbin Engineering University, Harbin, China
Qun Zheng
Harbin Engineering University, Harbin, China
Bin Jiang
Harbin Engineering University, Harbin, China
Qingfang Zhu
Harbin Engineering University, Harbin, China
Paper No:
GT2017-63510, V02AT39A012; 15 pages
Published Online:
August 17, 2017
Citation
Tian, Z, Zheng, Q, Jiang, B, & Zhu, Q. "Investigation on the Highly Loaded Helium Compressor Based on Helium Thermophysical Properties: Part A — The Design of Highly Loaded Axial Helium Compressor." Proceedings of the ASME Turbo Expo 2017: Turbomachinery Technical Conference and Exposition. Volume 2A: Turbomachinery. Charlotte, North Carolina, USA. June 26–30, 2017. V02AT39A012. ASME. https://doi.org/10.1115/GT2017-63510
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