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Impact of the Dead State Point Selection on the Exergy Analysis of Aircraft Environmental Control Systems

Bender, Daniel (2017) Impact of the Dead State Point Selection on the Exergy Analysis of Aircraft Environmental Control Systems. 5th International Exergy, Life Cycle Assessment, and Sustainability Workshop & Symposium, 09.-11. Juli 2017, Nisyros, Griechenland.

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Abstract

The analysis of energy intensive systems using the exergy analysis is a powerful tool to reveal the weakness of the respective system. But by its nature, it will not give absolute results as exergy is the maximum usable work relative to a reference point. This paper presents the influence of the reference state selection on the results obtained from the exergy analysis of a conventional aircraft air generation unit (pack). The analysis is done for a complete flight mission. Physical and chemical parts of the exergy are considered separately and the relative positions of the thermodynamic states compared to the reference state are taken into account for the calculation of fuel and product exergy. Different approaches for selecting the reference environment are discussed and conclusions are drawn.

Item URL in elib:https://elib.dlr.de/118420/
Document Type:Conference or Workshop Item (Speech)
Title:Impact of the Dead State Point Selection on the Exergy Analysis of Aircraft Environmental Control Systems
Authors:
AuthorsInstitution or Email of AuthorsAuthors ORCID iD
Bender, Danieldaniel.bender (at) dlr.deUNSPECIFIED
Date:July 2017
Refereed publication:Yes
Open Access:No
Gold Open Access:No
In SCOPUS:No
In ISI Web of Science:No
Status:Published
Keywords:Exergy analysis; Reference environment; Environmental control systems; Aircraft systems
Event Title:5th International Exergy, Life Cycle Assessment, and Sustainability Workshop & Symposium
Event Location:Nisyros, Griechenland
Event Type:international Conference
Event Dates:09.-11. Juli 2017
HGF - Research field:Aeronautics, Space and Transport
HGF - Program:Aeronautics
HGF - Program Themes:fixed-wing aircraft
DLR - Research area:Aeronautics
DLR - Program:L AR - Aircraft Research
DLR - Research theme (Project):L - Systems and Cabin
Location: Oberpfaffenhofen
Institutes and Institutions:Institute of System Dynamics and Control > Aircraft System Dynamics
Deposited By: Bender, Daniel
Deposited On:23 Jan 2018 10:59
Last Modified:16 Jul 2019 16:15

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