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Étude expérimentale d'une batterie de Carnot thermiquement intégrée utilisant une pompe à chaleur réversible ou un cycle organique de Rankine.

Experimental investigation of a thermally integrated Carnot battery using a reversible heat pump/organic Rankine cycle.

Numéro : 2111

Auteurs : DUMONT O., CHARALAMPIDIS A., LEMORT V., KARELLAS S.

Résumé

The growth of renewable energy requires flexible, low-cost and efficient electrical storage systems to balance the mismatch between energy supply and demand. The Carnot battery (or Pumped Thermal Energy Storage) converts electric energy to thermal energy with a heat pump (HP) when electricity production is greater than demand; when electricity demand outstrips production, the Carnot battery generates power from two thermal storage reservoirs (Rankine mode). Classical Carnot batteries architectures do not achieve more than 60% roundtrip electric efficiency. However, innovative architectures, using waste heat recovery (thermally integrated Carnot batteries) are able to reach electrical power production of the power cycle larger than the electrical power consumption of the heat pump (powerto-power-ratio), increasing the value of the technology. It can be shown that the optimization of such a technology is a trade-off between the maximization of the power and the power-to-power ratio (depending on electricity prices among others). In this paper, the full development of a prototype of thermally integrated Carnot battery using a reversible heat pump/organic Rankine cycle (HP/ORC) is described. It includes the selection of the nominal design point, the architecture, the components and the sizing. This first experimental campaign showed a roundtrip electrical energy ratio of 72.5% with ORC efficiency of 5% (temperature lift is equal to 49 K) and COP of HP of 14.4 (temperature lift is equal to 8 K). These results are very encouraging because the performance can easily be improved
(probably up to 100% roundtrip electrical energy ratio) by optimizing the volumetric machine, working at larger scale, optimizing the control and thermal insulation. Also, the performance of the main components (volumetric machine and heat exchangers) is analyzed.

Documents disponibles

Format PDF

Pages : 14

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 : Experimental investigation of a thermally integrated Carnot battery using a reversible heat pump/organic Rankine cycle.
  • Identifiant de la fiche : 30028413
  • Langues : Anglais
  • Sujet : Technologie
  • 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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