Document IIF

Mélanges de fluides pour remplacer le R22 dans les pompes à chaleur à haute température.

Mixtures to replace R22 in high-temperature heat pumps.

Résumé

The paper investigates various refrigerant mixtures to replace R22 that is currently used in several large (25 MW) turbo-compressor driven heat pumps to supply district heating in Sweden. The only commercially available alternative can be R134a, but its use could decrease the heating capacity by 35%. The aim of this work is to find a mixture giving a higher heating capacity than R134a. The paper screens about 2000 mixtures, containing two or more of R134a, R32, R143a and R125. The simulation results for the heat pump plant show that there are many mixtures that offer a considerably higher heating capacity than R134a, especially in summer-time.

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Détails

  • Titre original : Mixtures to replace R22 in high-temperature heat pumps.
  • Identifiant de la fiche : 2000-1579
  • Langues : Anglais
  • Source : 20th International Congress of Refrigeration: Refrigeration into the Third Millennium.
  • Date d'édition : 19/09/1999

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