Performance parameters analysis of an organic Rankine cycle for power generation from the heat of cooling scramjet

Xinchun Li 1, *, Zhongwei Wang 2 and Yaobin Niu 2

1 Equipment Management and Unmanned Aerial Vehicles Engineering College, Air Force Engineering University, Xi`an 710051, China.
2 Science and Technology on Scramjet Laboratory, National University of Defense Technology, Changsha 410073, China.
 
Research Article
International Journal of Science and Research Archive, 2020, 01(02), 009-021.
Article DOI: 10.30574/ijsra.2020.1.2.0032
Publication history: 
Received on 16 November 2020; revised on 30 November 2020; accepted on 03 December 2020
 
Abstract: 
An organic Rankine cycle (ORC) for power generation system is proposed for cooling scramjet. The heat which must be taken away by fuel coolant from cooling scramjet is converted to other forms of energy to decrease fuel coolant flow. A parametric study of an ORC power generation system has been performed. The multiplication ratio of fuel heat sink, the efficiency and output power of the system changing with the condenser outlet fuel coolant temperature are evaluated. The results show that the optimal condenser outlet fuel coolant temperature is 510K in a certain working condition, and the multiplication ratio of fuel heat sink is 0.0635, the efficiency of the system is 11.74% and the output power is 35.13kW. The effect of the cycle pressure ratio on the efficiency, output power and the multiplication ratio of fuel heat sink is also analyzed and it has a big significant influence. It is known through thermodynamic analyses that ORC power generation system for cooling scramjet would reduce the fuel coolant flow and give some output power for hypersonic vehicle.
 
Keywords: 
Energy; Power Generation System; Scramjet; ORC; Output Power
 
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