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Développement et validation expérimentale de modèles numériques simplifiés pour des réservoirs de stockage d’énergie thermique stratifiés qui incluent notamment un mode veille pour le stockage et des températures d’alimentation défavorables.

Development and experimental validation of simplified numerical models for stratified thermal energy storage tanks including standby storage mode and adverse feed temperatures.

Numéro : 2277

Auteurs : MOGHIMI P., ALGHAMDI K. I., BACH C. K., SPITLER J. D.

Résumé

Thermal Energy Storage (TES) offers a promising solution for facilitating increased use of renewables while ensuring electrical grid stability. Integrating TES in a residential building can also help addressing supply-demand mismatches by shifting the building’s thermal loads to off-peak hours of the grid. The feasibility of TES’s integration should be studied on a system level in building by year-round simulations and this is not achievable without simplified, efficient and yet accurate numerical models for stratified TES tanks. In this study, we compare three developed 1-D numerical models: Second Order Upwind (2OU), Crank-Nicolson (CN) and Hybrid. We evaluate each model under various operational scenarios representing realistic conditions in a water-based system. These scenarios include charging, discharging, standby storage mode, and exposure to adverse feed temperatures. Additionally, we examine models’ accuracy compared to experiments and investigate the validity of 1-D assumption. Results indicate that the developed CN and Hybrid models are reliable options for system level modeling; the CN provides slightly higher prediction accuracy while the Hybrid model performed better in energy conservation.

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Pages : 10 p.

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Détails

  • Titre original : Development and experimental validation of simplified numerical models for stratified thermal energy storage tanks including standby storage mode and adverse feed temperatures.
  • Identifiant de la fiche : 30033195
  • Langues : Anglais
  • Sujet : Technologie
  • Source : 2024 Purdue Conferences. 19th International Refrigeration and Air-Conditioning Conference at Purdue.
  • Date d'édition : 17/07/2024

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