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Condensation de l'eau et comportement de dispersion des gouttelettes sur des tubes revêtus de nanoressorts en silice.

Water condensation and droplet shedding behavior on silica nanospring coated tubes.

Numéro : 2355

Auteurs : CHAMBERLIN J. P., CORTI G., SOMMERS A. D.

Résumé

In this work, an amorphous silica nanospring (SN) coating is considered as a method to induce hydrophobicity and dropwise condensation on aluminum tubes for both water and methanol. Silica nanosprings offer several advantages over other one-dimensional nanostructures including high surface area (350 m2 g-1), mild growth conditions (350°C, atmospheric pressure), and thermal stability (< 1000°C in air). Special focus in this work will be given to baseline
testing and the performance of functionalized SN tubes. Testing to investigate the performance of SN-coated tubes and compare against the performance of uncoated tubing will be conducted in a purpose-built environmental chamber. In order to increase the amount of heat transfer possible within this chamber, 3D-printed fluid-carrying manifolds were designed to significantly increase the amount of available tube surface area. Two different methods of calculating condensation heat transfer coefficients from collected data are compared. Additionally, the existence of an ideal SN coating thickness for maximizing heat transfer and condensation rate is investigated. Future work will focus on using the printed and optimized manifolds to collect data from both a set of uncoated and sets of SN-coated tubes.

Documents disponibles

Format PDF

Pages : 10

Disponible

  • Prix public

    20 €

  • Prix membre*

    15 €

* meilleur tarif applicable selon le type d'adhésion (voir le détail des avantages des adhésions individuelles et collectives)

Détails

  • Titre original : Water condensation and droplet shedding behavior on silica nanospring coated tubes.
  • Identifiant de la fiche : 30028468
  • Langues : Anglais
  • Sujet : Technologie
  • Source : 2021 Purdue Conferences. 18th International Refrigeration and Air-Conditioning Conference at Purdue.
  • Date d'édition : 05/2021
  • Document disponible en consultation à la bibliothèque du siège de l'IIF uniquement.

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