Partager

Document IIF

Évaluation des performances en matière de récupération de chaleur dans une patinoire fonctionnant au CO2.

Evaluation of heat recovery performance in a CO2 ice rink.

Numéro : pap. 1042

Auteurs : BOLTEAU S., ROGSTAM J., TAZI M.

Résumé

Ice rinks have a high coinciding cooling and heating demand which turns them into ideal heat recovery applications. Using carbon dioxide (CO2) as a refrigerant in a trans-critical refrigeration system allows the ice rink to be self-sufficient in terms of heat. High temperatures can be supplied which in combination with a suitable heating system design can result in very high heat recovery performance. This study is based on the system solution used in the Gimo ice rink, first of its kind in Europe, using a 100% CO2 trans-critical system, with direct expansion. This system is designed with a temperature cascade on the heat recovery side to fit the CO2 properties. This implies a low return temperature from the heating system to increase the sub-cooling and thus the system efficiency. To further improve efficiency and the return from the heat recovery system a geothermal storage equips the installation as well. A numerical model has been created using real data from the field which allows to compare actual operating parameters with the desired optimal values. The aim is to find the optimum control of the head pressure and the sub-cooling to reach the maximum overall efficiency at all conditions. The results suggests that the heat recovery coefficient of performance is in the range 3.5-4, which is in line with or exceeds most conventional heat pumps considering the relatively high supply temperature of 60°C. An advantage is that this system solution does not need supplementary heat or heating equipment – one system covers the complete refrigeration and heating function.

Documents disponibles

Format PDF

Pages : 8 p.

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 : Evaluation of heat recovery performance in a CO2 ice rink.
  • Identifiant de la fiche : 30019113
  • Langues : Anglais
  • Source : 12th IIR Gustav Lorentzen Conference on Natural Refrigerants (GL2016). Proceedings. Édimbourg, United Kingdom, August 21st-24th 2016.
  • Date d'édition : 21/08/2016
  • DOI : http://dx.doi.org/10.18462/iir.gl.2016.1042

Liens


Voir d'autres communications du même compte rendu (140)
Voir le compte rendu de la conférence

Indexation