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Главная Архив Thermal Letter Оргкомитет Будущие конференции AIHTC
International Heat Transfer Conference 16

ISSN: 2377-424X (online)
ISSN: 2377-4371 (flashdrive)

PARALLEL TRIANGULAR CHANNEL SYSTEM FOR LATENT HEAT THERMAL ENERGY STORAGES

Assunta Andreozzi
Dipartimento di Ingegneria Industriale, Università degli studi di Napoli Federico II, P.le Tecchio 80, 80125, Napoli, Italy

Bernardo Buonomo
Dipartimento di Ingegneria Industriale e dell'Informazione, Università degli Studi della Campania "Luigi Vanvitelli," Aversa (CE), Italy

Davide Ercole
Dipartimento di Ingegneria Industriale e dell'Informazione, Università degli Studi della Campania "Luigi Vanvitelli", Via Roma, 29, 81031 Aversa (NA), Italy

Oronzio Manca
Dipartimento di Ingegneria Industriale e dell'Informazione, Università degli Studi della Campania "Luigi Vanvitelli," Aversa (CE), Italy

DOI: 10.1615/IHTC16.ecs.023991
pages 4411-4418


Ключевые слова: Energy conversion and storage, Computational methods, Phase change materials

Аннотация

A computational investigation on thermal energy storage system using Phase Change Material (PCM) is accomplished. The system is a honeycomb structure made of parallel triangular channels and half of them are filled with PCM and the others are passed through by the working fluid. Various configurations for different Channels Per Unit of length (CPU) are investigated. A comparison between a direct model and a porous medium model is carried out. The porous medium is modelled with the Darcy law and to evaluate the heat transfer among solid, PCM and air and the local thermal equilibrium assumption is employed. Permeability, inertial resistant coefficient, effective thermal conductivity and interfacial heat transfer coefficient of the equivalent porous medium are evaluated by means of the direct model. Numerical simulations are carried out using the Ansys-Fluent code for the direct model with triangular channels and equivalent porous medium. Results in terms of melting time, fraction liquid and temperature fields as function of time are presented and a comparison between the two models is accomplished.

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