ETD

Archivio digitale delle tesi discusse presso l'Università di Pisa

Tesi etd-06282018-115611


Tipo di tesi
Tesi di laurea magistrale
Autore
VIGLIONE, ALESSANDRO SIMONE
URN
etd-06282018-115611
Titolo
Thermal Characterization of a Composite Metal foam/Paraffin Wax Material in Hypergravity Conditions
Dipartimento
INGEGNERIA CIVILE E INDUSTRIALE
Corso di studi
INGEGNERIA AEROSPAZIALE
Relatori
relatore Prof. Filippeschi, Sauro
correlatore Dott. Mameli, Mauro
Parole chiave
  • Paraffin
  • metal
  • foam
  • composite
  • hypergravity
Data inizio appello
17/07/2018
Consultabilità
Non consultabile
Data di rilascio
17/07/2088
Riassunto
Thermal management systems for space vehicles often have to accommodate heat loads and thermal conditions that vary over time. In the last few years, the progressive miniaturization of electronics and space missions more and more demanding have accentuated the attention on the research of new
solutions to properly address the problem. Phase Change Materials PCMs (e.g. paraffin waxes or fused silica salts) can be successfully used for the thermal management and the heat storage for ground and space applications. The PCM use is however limited by the low thermal conductivity of the melting material. Several methods have been proposed in literature to enhance the heat fluxes removed by the melting material. One of the most promising is to use of high conductive open cell metal foams embedded in the PCM material. The literature shows that the thermal behavior of the PCM/Foam composite material may be strongly influenced by the gravity level depending on the relative density and the pore
size of the metalic foams. This thesis is focused on the design, realization and integration of an experimental apparatus needed to test in hyper-gravity conditions a composite Aluminium foam/paraffin wax material, within the ESA Educational Programme "Spin your Thesis! 2017". In particular the main experiments' goal is to analyze the effect of different hyper gravity levels (up to 20g) and configurations (gravity direction parallel or perpendicular to the heat flux) on the melting performance of a composite aluminum foam/paraffin wax material.
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