Auxiliary power unit (APU) operators face increasingly stricter airport requirements concerning exhaust gas and noise emission levels. To simultaneously reduce exhaust gas and noise emissions and to satisfy the increasing demand of electric power on board, optimization of the current technology is necessary. Prior to any possible demonstration of optimization potential, detailed data of thermodynamic properties and emissions have to be determined. Therefore, the investigations presented in this paper were conducted at a full-scale APU of an operational aircraft. A Pratt & Whitney (East Hartford, CT) APS3200, commonly installed in the Airbus A320 aircraft family, was used for measurements of the reference data. In order to describe the APS3200, the full spectrum of feasible power load and bleed air mass flow combinations were adjusted during the study. Their effect on different thermodynamic and performance properties, such as exhaust gas temperature, pressure as well as electric and overall efficiency is described. Furthermore, the mass flows of the inlet air, exhaust gas, and fuel input were determined. Additionally, the work reports the exhaust gas emissions regarding the species CO2, CO, and NOx as a function of load point. Moreover, the acoustic noise emissions are presented and discussed. With the provided data, the paper serves as a database for validating numerical simulations and provides a baseline for current APU technology.
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June 2018
Research-Article
Experimental Investigation of Cycle Properties, Noise, and Air Pollutant Emissions of an APS3200 Auxiliary Power Unit
Teresa Siebel,
Teresa Siebel
German Aerospace Center (DLR),
Institute of Combustion Technology,
Stuttgart 70569, Germany
e-mail: teresa.siebel@dlr.de
Institute of Combustion Technology,
Stuttgart 70569, Germany
e-mail: teresa.siebel@dlr.de
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Jan Zanger,
Jan Zanger
German Aerospace Center (DLR),
Institute of Combustion Technology,
Stuttgart 70569, Germany
Institute of Combustion Technology,
Stuttgart 70569, Germany
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Andreas Huber,
Andreas Huber
German Aerospace Center (DLR),
Institute of Combustion Technology,
Stuttgart 70569, Germany
Institute of Combustion Technology,
Stuttgart 70569, Germany
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Manfred Aigner,
Manfred Aigner
German Aerospace Center (DLR),
Institute of Combustion Technology,
Stuttgart 70569, Germany
Institute of Combustion Technology,
Stuttgart 70569, Germany
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Karsten Knobloch,
Karsten Knobloch
German Aerospace Center (DLR),
Institute of Propulsion Technology,
Berlin 10623, Germany
Institute of Propulsion Technology,
Berlin 10623, Germany
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Friedrich Bake
Friedrich Bake
German Aerospace Center (DLR),
Institute of Propulsion Technology,
Berlin 10623, Germany
Institute of Propulsion Technology,
Berlin 10623, Germany
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Teresa Siebel
German Aerospace Center (DLR),
Institute of Combustion Technology,
Stuttgart 70569, Germany
e-mail: teresa.siebel@dlr.de
Institute of Combustion Technology,
Stuttgart 70569, Germany
e-mail: teresa.siebel@dlr.de
Jan Zanger
German Aerospace Center (DLR),
Institute of Combustion Technology,
Stuttgart 70569, Germany
Institute of Combustion Technology,
Stuttgart 70569, Germany
Andreas Huber
German Aerospace Center (DLR),
Institute of Combustion Technology,
Stuttgart 70569, Germany
Institute of Combustion Technology,
Stuttgart 70569, Germany
Manfred Aigner
German Aerospace Center (DLR),
Institute of Combustion Technology,
Stuttgart 70569, Germany
Institute of Combustion Technology,
Stuttgart 70569, Germany
Karsten Knobloch
German Aerospace Center (DLR),
Institute of Propulsion Technology,
Berlin 10623, Germany
Institute of Propulsion Technology,
Berlin 10623, Germany
Friedrich Bake
German Aerospace Center (DLR),
Institute of Propulsion Technology,
Berlin 10623, Germany
Institute of Propulsion Technology,
Berlin 10623, Germany
Contributed by the Aircraft Engine Committee of ASME for publication in the JOURNAL OF ENGINEERING FOR GAS TURBINES AND POWER. Manuscript received July 24, 2017; final manuscript received August 17, 2017; published online February 13, 2018. Editor: David Wisler.
1Corresponding author.
J. Eng. Gas Turbines Power. Jun 2018, 140(6): 061201 (9 pages)
Published Online: February 13, 2018
Article history
Received:
July 24, 2017
Revised:
August 17, 2017
Citation
Siebel, T., Zanger, J., Huber, A., Aigner, M., Knobloch, K., and Bake, F. (February 13, 2018). "Experimental Investigation of Cycle Properties, Noise, and Air Pollutant Emissions of an APS3200 Auxiliary Power Unit." ASME. J. Eng. Gas Turbines Power. June 2018; 140(6): 061201. https://doi.org/10.1115/1.4038159
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