Comparison of Direct and Indirect Active Thermal Energy Storage Strategies for Large-Scale Solar Heating Systems - Archive ouverte HAL Accéder directement au contenu
Article Dans Une Revue Energies Année : 2019

Comparison of Direct and Indirect Active Thermal Energy Storage Strategies for Large-Scale Solar Heating Systems

Xiaofeng Guo
Cheng Wang

Résumé

Large-scale solar heating for the building sector requires an adequate Thermal Energy Storage (TES) strategy. TES plays the role of load shifting between the energy demand and the solar irradiance and thus makes the annual production optimal. In this study, we report a simplified algorithm uniquely based on energy flux, to evaluate the role of active TES on the annual performance of a large-scale solar heating for residential thermal energy supply. The program considers different types of TES, i.e., direct and indirect, as well as their specifications in terms of capacity, storage density, charging/discharging limits, etc. Our result confirms the auto-regulation ability of indirect (latent using Phase Change Material (PCM), or Borehole thermal storage (BTES) in soil) TES which makes the annual performance comparable to that of direct (sensible with hot water) TES. The charging and discharging restrictions of the latent TES, until now considered as a weak point, could retard the achievement of fully-charged situation and prolong the charging process. With its compact volume, the indirect TES turns to be promising for large-scale solar thermal application.
Fichier principal
Vignette du fichier
energies-12-01948-v2 (1).pdf (5.21 Mo) Télécharger le fichier
Origine : Fichiers éditeurs autorisés sur une archive ouverte
Loading...

Dates et versions

hal-02137906 , version 1 (23-05-2019)

Licence

Paternité

Identifiants

Citer

Xiaofeng Guo, Alain Pascal Goumba, Cheng Wang. Comparison of Direct and Indirect Active Thermal Energy Storage Strategies for Large-Scale Solar Heating Systems. Energies, 2019, 12 (10), pp.1948. ⟨10.3390/en12101948⟩. ⟨hal-02137906⟩
61 Consultations
169 Téléchargements

Altmetric

Partager

Gmail Facebook X LinkedIn More