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Simulation de la performance des pompes à chaleur au dioxyde de carbone et aux hydrocarbures utilisées pour le chauffage à des températures moyennes et élevées.

Simulación sobre el rendimiento en las bombas de calor de hidrocarburos y de dióxido de carbono, para calefacción a media y alta temperatura.

Auteurs : KIM M., BAIK Y. J., RA H. S.

Type d'article : Article

Résumé

In order to compare the performance of the carbon dioxide, propane and isobutane heat pumps for mediumand high-temperature heating, the three heat pump cycles were optimized using a simulation method. To fairly compare the performance of the cycles by using different working fluids, each cycle was optimized from the viewpoint of heating COP by two design parameters. The first is the gas cooler (or condenser) exit temperature and the other is the ratio of the overall heat conductance of the gas cooler to the combined overall heat conductance of the gas cooler and the evaporator. The inlet and outlet temperatures of secondary fluid of the gas cooler (or condenser) were fixed at 40/90°C and 40/150°C. The heat source inlet temperature was fixed at 10°C. The flow rates of both the heat source and the heat sink were also fixed. The results shows that the hydrocarbon heat pumps have 11~17% higher heating COP than carbon dioxide heat pump under the simulation conditions considered in the present study. However, for a high temperature heating, even though the isobutane heat pump shows the best performance, the carbon dioxide heat pump looks promising due to hydrocarbon heat pumps’ high compression ratio.

Documents disponibles

Format PDF

Pages : 26-30

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 : Simulación sobre el rendimiento en las bombas de calor de hidrocarburos y de dióxido de carbono, para calefacción a media y alta temperatura.
  • Identifiant de la fiche : 30009529
  • Langues : Espagnol
  • Source : Frío Calor Aire acondicionado - vol. 41, n. 462 - vol. 41, n. 462
  • Date d'édition : 10/2013

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