Partager

Document IIF

Dioxyde de carbone comme frigorigène dans une pompe à chaleur utilisée pour sécher de la boue.

Carbon dioxide as a refrigerant in a sludge drying heat pump.

Auteurs : FLAGA A., SCHNOTALE J.

Résumé

A carbon dioxide (CO2) heat pump system for sewage sludge drying can be an energy efficient alternative to the traditional methods, that also avoids emissions from the drying installation. In this system, sludge is dried by closed-loop circulating air, treated in the heat pump. Due to the critical parameters of CO2, the process in the CO2 heat pump is the transcritical cycle with a high compressor discharge temperature. It provides additional hygienization of dried product which becomes sanitary safe and environmentally sound. The paper presents data from laboratory measurements of sludge drying in controlled temperature and humidity environment and energetic evaluation and optimization of the working parameters of the transcritical CO2 heat pump. Impact of the internal heat exchanger and gas cooler pressure on energy efficiency of the heat pump and the whole drying system have also been analysed.

Documents disponibles

Format PDF

Pages : ICR07-E2-210

Disponible

  • Prix public

    20 €

  • Prix membre*

    Gratuit

* meilleur tarif applicable selon le type d'adhésion (voir le détail des avantages des adhésions individuelles et collectives)

Détails

  • Titre original : Carbon dioxide as a refrigerant in a sludge drying heat pump.
  • Identifiant de la fiche : 2007-2803
  • Langues : Anglais
  • Source : ICR 2007. Refrigeration Creates the Future. Proceedings of the 22nd IIR International Congress of Refrigeration.
  • Date d'édition : 21/08/2007

Liens


Voir d'autres communications du même compte rendu (839)
Voir le compte rendu de la conférence

Indexation