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Couplage d’un système de refroidissement diphasique à circulation d'air naturelle avec stockage de chaleur latente pour des applications aéronautiques.

Coupling of a two-phase natural circulation cooling system with latent heat storage for aircraft applications.

Numéro : pap. n. 515

Auteurs : ALBERTSEN B., SCHMITZ G.

Résumé

The progressive electrification of the energy supply in airplanes leads to an increasing demand for innovative cooling technologies. Due to high efficiency and low weight two-phase natural circulation cooling systems provide high potential for this application.
Integration of latent heat storages in such systems using paraffin as phase change material (PCM) is investigated experimentally. The HFO refrigerant R1233zd is used to reach a vaporization temperature in steady-state of 60 °C with a heat load of 700 W (heat flux density: 12,5 W/cm²) and a heat sink temperature of 40 °C (evaporation heat-transfer-coefficient: 6290 W/m²K). Parameter studies show a strong dependency of the mass flow rate on the heat load and a linear relation between the heat load and recooling temperature with the temperature of the component to be cooled. In this application PCM is used to dampen heat-load peaks and to compensate lower cooling performances e.g. in disadvantageous flight situations.

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Format PDF

Pages : 8

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    20 €

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    Gratuit

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Détails

  • Titre original : Coupling of a two-phase natural circulation cooling system with latent heat storage for aircraft applications.
  • Identifiant de la fiche : 30026373
  • Langues : Anglais
  • Source : Proceedings of the 25th IIR International Congress of Refrigeration: Montréal , Canada, August 24-30, 2019.
  • Date d'édition : 24/08/2019
  • DOI : http://dx.doi.org/10.18462/iir.icr.2019.0515

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