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Stockage d’énergie sous forme de chaleur latente dans un réfrigérateur ménager fonctionnant à l’énergie photovoltaïque, conception du transfert de chaleur et viabilité technique.

Latent heat energy storage in a household refrigerator powered by photovoltaic electricity – heat transfer design and technical viability.

Numéro : 2442

Auteurs : MIRA-HERNÁNDEZ C., ISAZA-ROLDÁN C. A.

Résumé

In remote rural areas without access to the electrical grid, the use of a stand-alone photovoltaic (PV) installation to drive a domestic refrigerator can be a viable option for adequate food preservation. In this application, energy storage, probably in electric batteries, is required to guarantee refrigeration conditions during periods without solar energy availability. However, electric batteries are still costly, have limited lifespan and use materials with restricted availability. Latent heat thermal energy storage (LHTES) can be an alternative to electric batteries with reduced cost and lower environmental impact. The current study presents general design guidelines for a system with a household refrigerator driven by PV power and with LHTES units. The LHTES units consist of finned panels filled with phase change material (PCM) that are placed on the vertical walls of the compartments, and are passively discharged by free convection. A thermodynamic model is used to size the system components and assess the technical viability of the proposed configuration. Special attention is paid to the heat transfer considerations involved in the design of the LHTES units to guarantee the required charge and discharge powers. The analysis is applied to a 400 L sample commercial refrigerator operating in Medellín, Colombia. It is concluded that the refrigerator necessitates moderate modifications to achieve the technical viability of the proposed configuration.

Documents disponibles

Format PDF

Pages : 110

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 : Latent heat energy storage in a household refrigerator powered by photovoltaic electricity – heat transfer design and technical viability.
  • Identifiant de la fiche : 30028480
  • Langues : Anglais
  • Sujet : Technologie, Pays en développement
  • 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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