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Elektronikkylning: Datorstödd flödessimulering för nästa generations eSite
2014 (Swedish)Independent thesis Advanced level (professional degree), 20 credits / 30 HE creditsStudent thesis
Abstract [en]

In this master thesis the thermal conditions for the module eSite has been investigated. eSite is a product which is currently under development by the company Flexenclosure. It transforms and delivers power to consumers. Cooling of components within eSite has been simulated and analyzed. The components are placed on a heat sink over which natural convection occurs. It has been tested using both manual calculations and computer-aided flow simulation (CFD) in the software Ansys® 14.5 and calculation tool Fluent™. The validity of the simulations has been strengthened by the use of two different viscous model settings. Analysis of the results has shown a maximum temperature in the heat sink for the intended design, at a power supply corresponding to 550W, between 81.3 to 81.6°C. This corresponds to a previously created geometry which has been modified in this project.Simulations that represent relationships 3000m above sea level resulted in the maximum temperature of: 74.0, 77.8 and 81.9°C for elevated ambient temperatures, respectively: 30.5, 35.5 and 40.5°C.During the project, a proposal for an alternative design for the heat sink and its casing has been created. Simulations with this heat sink resulted in a maximum temperature, with an imposed power equivalent to 550W, between 68.6 to 70.8°C. The mass of this option amounts to 24.4 kg. Simulations with different overall effects have also been investigated at various simulations with ambient temperatures of 20, 30, 40 and 50°C received a maximum temperature of the heat sink in the range [low temp, high temp] [46.65°C , 71.01°C] at 350W, [52.57°C , 76.61°C] at 450W and [58.42°C , 81.57°C] at 550W.

Place, publisher, year, edition, pages
2014. , 61 p.
Keyword [en]
Technology
Keyword [sv]
Teknik, CFD, heat sink, konvektion, natural konvection, CAE, värmesänka, flänsar, fins
Identifiers
URN: urn:nbn:se:ltu:diva-56220Local ID: cfecebb4-871e-4b14-924b-d7d94e125f39OAI: oai:DiVA.org:ltu-56220DiVA: diva2:1029607
External cooperation
Subject / course
Student thesis, at least 30 credits
Educational program
Sustainable Energy Engineering, master's level
Note
Validerat; 20140224 (global_studentproject_submitter)Available from: 2016-10-04 Created: 2016-10-04Bibliographically approved

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CiteExportLink to record
Permanent link

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Citation style
  • apa
  • ieee
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Language
  • de-DE
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  • fi-FI
  • nn-NO
  • nn-NB
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  • Other locale
More languages
Output format
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