Optimization on conventional and electric air-cycle refrigeration systems of aircraft: A short-cut method and analysis

Jiang, Hongsheng; Dong, Sujun; Zhang, Hainan; Ai, Fengming; Zhang, Zhiwei; Wang, Jun

doi:10.1016/j.cja.2020.02.021

Cited by 14 publications

(4 citation statements)

References 14 publications

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“…The weight penalty arising from the PGU can be estimated by fuel consumption as it consumes fuel [27]. It contains the fuel consumption for carrying the equipment weight, the fuel consumption for overcoming the additional drag, and the fuel consumption for producing additional power from the engine shaft [39]. The extra weight of the waste heat recovery module is equivalent to the PGU, for the preheated unit is mainly constructed by the original configuration of the helicopter.…”

Section: Fuel Penalty Of the Power Generation Unit In Helicoptersmentioning

confidence: 99%

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Energy and Exergy Analysis on a Waste Heat Recovery Module for Helicopters

Wei

Zhao

et al. 2021

IEEE Access

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The exhaust of turboshaft engines contains a big amount of waste heat but does not provide propulsion power to the helicopter. Reusing the heat can increase fuel efficiency and reduce carbon emissions of the engine. This paper implements energy analyses and weight penalty estimations to a waste heat recovery module of the turboshaft engine. The components are a fuel preheating process and a power generation unit based on the organic Rankine cycle. The fuel penalty of the module consists of the fuel consumption of the following: carrying the instruments, overcoming the additional drag, and powering from the engine. Considering the high-temperature situation, working fluid of the module is chosen from benzene, R365mfc, and R245fa. Simulation based on T700 turboshaft engine and a complete flight mission validate the energy efficiency improvement produced by the module. Results show that the module having existing technologies of the expander always cost additional fuel while increasing energy efficiency for the helicopter, but negative fuel penalties can be achieved by increasing the power-to-weight ratio of the module.

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Section: Fuel Penalty Of the Power Generation Unit In Helicoptersmentioning

confidence: 99%

“…Assuming that the external drag and the thrust recovery of the exhaust port are so small that can be ignored. The power loss caused by the aerodynamic drag can be calculated as [39] 2 , 1 2000…”

Section: Fuel Penalty Of the Power Generation Unit In Helicoptersmentioning

confidence: 99%

Energy and Exergy Analysis on a Waste Heat Recovery Module for Helicopters

Wei

Zhao

et al. 2021

IEEE Access

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“…In this case, it is hard to find the global optimal solution [17]. Jiang et al [18] carried out a sensitivity analysis for the ACS, obtained key parameters and simplified the optimization design process. The process can greatly reduce the calculation time.…”

Section: Introductionmentioning

confidence: 99%

Parameter-Matching Algorithm and Optimization of Integrated Thermal Management System of Aircraft

Dong

Jiang

et al. 2022

Aerospace

Self Cite

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The integrated thermal management system of aircraft is essential to maintain a suitable environment for the cabin crew and devices. The system is composed of the air-cycle refrigeration subsystem, the vapor-compression refrigeration subsystem, the liquid-cooling subsystem and the fuel-cycle subsystem, which are coupled with each other through heat exchangers. Due to the complex structure and large number of components in the system, it is necessary to design a corresponding parameter-matching algorithm for its special structure and to select the appropriate optimization design method. In this paper, the structure of an integrated thermal management system is analyzed in depth. A hierarchical matching algorithm of system parameters was designed and realized. Meanwhile, a sensitivity analysis of the system was performed, where key parameters were selected. Besides, a variety of optimization algorithms was used to optimize the design calculations. The results show that the particle swarm optimization and genetic algorithm could effectively find the global optimal solution when taking the fuel penalty as the objective function. Furthermore, the particle swarm optimization method took less time.

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“…It is necessary to preset absolute pressure regulator, precooler, and other components in the bleed air system to depressurize and cool the engine bleed air, and the cooled gas is introduced into the air circulation system. Depressurization and cooling treatment lead to the waste of engine bleed energy and reduce the utilization e ciency of engine bleed energy [9][10][11]. In addition, absolute pressure regulator and precooler increase the weight of the aircraft environmental control system [12,13].…”

Section: Introductionmentioning

confidence: 99%

Performance Analysis of New Air Circulation System Based on Random Matrices

Zhang

2022

Mathematical Problems in Engineering

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This paper studies the aircraft air circulation system and proposes a new architecture of the aircraft air circulation system. Combined with the neural network algorithm, the numerical simulation results of turbine, compressor, and heat exchanger are fitted and predicted, and the accuracy of the simulation model is verified by comparing with the experimental results. Comparing and analyzing the booster, F-15, F-35, and the newly proposed air circulation system, the engine bleed air volume consumed by the system under different flight conditions is obtained. The results show that the newly proposed air circulation system can save up to 71.4% of the engine bleed air compared with the simple boost and 29.8% of the engine bleed air compared with the F-35. The new air circulation system proposed in this paper can effectively improve the energy utilization rate of the system and reduce the consumption of engine bleed air.

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Optimization on conventional and electric air-cycle refrigeration systems of aircraft: A short-cut method and analysis

Cited by 14 publications

References 14 publications

Energy and Exergy Analysis on a Waste Heat Recovery Module for Helicopters

Energy and Exergy Analysis on a Waste Heat Recovery Module for Helicopters

Parameter-Matching Algorithm and Optimization of Integrated Thermal Management System of Aircraft

Performance Analysis of New Air Circulation System Based on Random Matrices

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