Titre :

Debris-induced consequences on turbulence and vorticity in solar photovoltaic module-generated array wakes

Auteur(s) :

Smith, Sarah E. [Auteur]
Laboratoire des Écoulements Géophysiques et Industriels [Grenoble] [LEGI]
Calaf, Marc [Auteur]
Department of Mechanical Engineering [University of Utah]
Cal, Raúl Bayoán [Auteur]
Portland State University [Portland] [PSU]
Obligado, Martín [Auteur]
Laboratoire de Mécanique des Fluides de Lille - Kampé de Fériet [LMFL]
Laboratoire des Écoulements Géophysiques et Industriels [Grenoble] [LEGI]
Djeridi, Henda [Auteur]
Laboratoire des Écoulements Géophysiques et Industriels [Grenoble] [LEGI]

Titre de la revue :

Journal of Renewable and Sustainable Energy

Éditeur :

AIP Publishing

Date de publication :

2024-05-01

ISSN :

1941-7012

Discipline(s) HAL :

Sciences de l'ingénieur [physics]

Résumé en anglais : [en]

Particle-laden flows in solar photovoltaic (PV) systems are inevitable, where wind-swept debris in open environments are carried by high winds and turbulence, coating panel surfaces or damaging structures. Particle deposition, ...
Lire la suite >Particle-laden flows in solar photovoltaic (PV) systems are inevitable, where wind-swept debris in open environments are carried by high winds and turbulence, coating panel surfaces or damaging structures. Particle deposition, or soiling, is a well-known issue for large-scale plants which rely on uninhibited solar rays for optimal production. But understanding the mechanisms leading to soiling requires a physical and fluid dynamics-centered focus, since turbulence dominates PV panel wakes and is also known to alter particle concentration and trajectories. This study presents an experimental campaign toward consequences of particle-laden flow between two model PV panels using time-resolved particle image velocimetry. The model array was subjected to varied particle volume fractions, including a tracer particle case and a water droplet case. Characterization of mean velocity, turbulence statistics, and mean kinetic energy within the single phase and, separately, particle phase flows showed modified features due to particle inertia. Images captured at a frequency of 1 kHz in the near wake of the upstream panel allow for a first experimental look at vorticity and convective velocity of vortex structures for single-phase and particle-phase flows which are crucial to debris transport and soiling in PV environments.Lire moins >

Langue :

Anglais

Comité de lecture :

Oui

Audience :

Internationale

Vulgarisation :

Non

Collections :

• Laboratoire de Mécanique des Fluides de Lille Kampé de Fériet (LMFL) - UMR 9014

Source :

Harvested from HAL