https://www.mdu.se/

mdu.sePublications
Change search
CiteExportLink to record
Permanent link

Direct link
Cite
Citation style
  • apa
  • ieee
  • modern-language-association-8th-edition
  • vancouver
  • Other style
More styles
Language
  • de-DE
  • en-GB
  • en-US
  • fi-FI
  • nn-NO
  • nn-NB
  • sv-SE
  • Other locale
More languages
Output format
  • html
  • text
  • asciidoc
  • rtf
Conceptual design and development of thermal management system for hybrid electric aircraft engine.: A study to develop a physical model and investigate the use of Mobil Jet Oil II as coolant for aircraft electrical propulsion under different scenarios and time horizons.
Mälardalen University, School of Business, Society and Engineering, Future Energy Center. (Future energy group)
2019 (English)Independent thesis Advanced level (degree of Master (Two Years)), 20 credits / 30 HE creditsStudent thesis
Abstract [en]

The ever-increasing levels of greenhouse gas emissions has led to the scientific community starting to explore the viability of electrical aircraft system, with the most prominent research and product development for hybrid electric system, which forms the transition phase from combustion to fully electric aircrafts. The primary objective of this thesis is to find solutions towards thermal management of the electrical components of a hybrid electric aircraft propulsion system, which generate a significant amount of heat while operating at heavy load conditions required to propel an aircraft. In view of these objectives a micro channel cold plate liquid cooling system, has been dynamically modelled using a combination of lumped parameter and thermal resistance methods of heat transfer analysis. The study investigates the prospects of using Mobil Jet Oil II, typically used as an aircraft lubricant as a coolant for the thermal management system. The primary components of this model are lithium ion battery, DC-AC inverter, permanent magnet motor, cross flow finned micro channel heat exchanger, centrifugal pump and ducts. The electrical components have been dimensioned according to energy storage and load requirements considering their efficiencies and gravimetric power/energy. The system has been simulated and analyzed under different scenarios considering the coolant inlet temperature, air temperature across the heat exchanger and on two-time horizons. Analysis has been done to study the dynamic trends of the component temperature and the coolant at different stages of the system. The scope of the study includes an evaluation of the added weight of the thermal management system under different time horizons and their comparison with results from a reference study. From the simulation results it can be concluded that Mobil Jet Oil II is a promising option as a coolant and therefore its use as a common fluid for gas turbine lubrication and as coolant, will benefit the aircraft as now no extra coolant reservoir is required, allowing reduction in weight carried by the aircraft.

Place, publisher, year, edition, pages
2019. , p. 84
Keywords [en]
Hybrid electric aircraft system, Thermal management system, micro channel, Dynamic modelling, Mobil Jet Oil II
National Category
Energy Engineering
Identifiers
URN: urn:nbn:se:mdh:diva-46612OAI: oai:DiVA.org:mdh-46612DiVA, id: diva2:1381476
Subject / course
Energy Engineering
Presentation
2019-12-19, Västerås, 15:15 (English)
Supervisors
Examiners
Available from: 2020-01-13 Created: 2019-12-21 Last updated: 2020-01-17Bibliographically approved

Open Access in DiVA

fulltext(1262 kB)793 downloads
File information
File name FULLTEXT02.pdfFile size 1262 kBChecksum SHA-512
5cb60cf39aa09b916d1b2d7bdac67fc1d751d4dec4897e8f735b29ecaaf69b75ce6d9c3960cd5e72962db47beb66db86ceacc68cf1a21b2a6ef0b4457cabe0c7
Type fulltextMimetype application/pdf

By organisation
Future Energy Center
Energy Engineering

Search outside of DiVA

GoogleGoogle Scholar
Total: 797 downloads
The number of downloads is the sum of all downloads of full texts. It may include eg previous versions that are now no longer available

urn-nbn

Altmetric score

urn-nbn
Total: 2376 hits
CiteExportLink to record
Permanent link

Direct link
Cite
Citation style
  • apa
  • ieee
  • modern-language-association-8th-edition
  • vancouver
  • Other style
More styles
Language
  • de-DE
  • en-GB
  • en-US
  • fi-FI
  • nn-NO
  • nn-NB
  • sv-SE
  • Other locale
More languages
Output format
  • html
  • text
  • asciidoc
  • rtf