A pressure-exchange ejector transferring energy by compression and expansion waves has the potential for higher efficiency. The width and position of each port are essential in pressure-exchange ejector design. A dimensionless time τ expressing both port widths and the positions of port ends was introduced. A prototype was designed and the experimental system was set up. Many sets of experiment with different geometrical arrangements were conducted. The results suggest that the efficiency greatly changes with the geometrical arrangements. The efficiency is about 60% at proper port widths and positions, while at improper geometrical arrangements, the efficiency is much lower and the maximum deviation may reach about 20%. The proper dimensionless port widths and positions at different operating conditions are obtained. For a fixed overall pressure ratio, the widths of the high pressure flow inlet and middle pressure flow outlet increase as the outlet pressure increases and the low pressure flow inlet width is reduced with a larger outlet pressure. The middle pressure flow outlet (MO) opening end remains constant at different outlet pressures. The positions of the high pressure flow inlet (HI) closed end and the low pressure flow inlet (LI) open end increase with the elevation of outlet pressure, however, the distance between the HI closing end and the LI opening end is constant. The port widths and positions have a significant influence on the performance of the pressure-exchange ejector. The dimensionless data obtained are very valuable for pressure-exchange ejector design and performance optimization.
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June 2012
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The Port Width and Position Determination for Pressure-Exchange Ejector
Wenjing Zhao,
e-mail: forverjing@163.com
Wenjing Zhao
School of Chemical Machinery Engineering, Dalian University of Technology,
Dalian, Liaoning, 116024, China
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Dapeng Hu,
e-mail: hudp@dlut.edu.cn
Dapeng Hu
School of Chemical Machinery Engineering, Dalian University of Technology,
Dalian, Liaoning, 116024, China
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Peiqi Liu,
Peiqi Liu
School of Chemical Machinery Engineering, Dalian University of Technology,
Dalian, Liaoning, 116024, China
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Yuqiang Dai,
Yuqiang Dai
School of Chemical Machinery Engineering, Dalian University of Technology,
Dalian, Liaoning, 116024, China
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Jiupeng Zou,
Jiupeng Zou
School of Chemical Machinery Engineering, Dalian University of Technology,
Dalian, Liaoning, 116024, China
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Che Zhu,
Che Zhu
School of Chemical Machinery Engineering, Dalian University of Technology,
Dalian, Liaoning, 116024, China
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Jiaquan Zhao
Jiaquan Zhao
School of Chemical Machinery Engineering, Dalian University of Technology,
Dalian, Liaoning, 116024, China
Search for other works by this author on:
Wenjing Zhao
School of Chemical Machinery Engineering, Dalian University of Technology,
Dalian, Liaoning, 116024, China
e-mail: forverjing@163.com
Dapeng Hu
School of Chemical Machinery Engineering, Dalian University of Technology,
Dalian, Liaoning, 116024, China
e-mail: hudp@dlut.edu.cn
Peiqi Liu
School of Chemical Machinery Engineering, Dalian University of Technology,
Dalian, Liaoning, 116024, China
Yuqiang Dai
School of Chemical Machinery Engineering, Dalian University of Technology,
Dalian, Liaoning, 116024, China
Jiupeng Zou
School of Chemical Machinery Engineering, Dalian University of Technology,
Dalian, Liaoning, 116024, China
Che Zhu
School of Chemical Machinery Engineering, Dalian University of Technology,
Dalian, Liaoning, 116024, China
Jiaquan Zhao
School of Chemical Machinery Engineering, Dalian University of Technology,
Dalian, Liaoning, 116024, China
J. Eng. Gas Turbines Power. Jun 2012, 134(6): 064502 (4 pages)
Published Online: April 12, 2012
Article history
Received:
September 2, 2011
Revised:
November 3, 2011
Published:
April 9, 2012
Online:
April 12, 2012
Citation
Zhao, W., Hu, D., Liu, P., Dai, Y., Zou, J., Zhu, C., and Zhao, J. (April 12, 2012). "The Port Width and Position Determination for Pressure-Exchange Ejector." ASME. J. Eng. Gas Turbines Power. June 2012; 134(6): 064502. https://doi.org/10.1115/1.4005982
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