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Document IIF

Compresseur-détendeur (ECU) au CO2 dans les systèmes frigorifiques.

CO2 expander-compressor-unit (ECU) in refrigeration systems.

Numéro : pap. n. 207

Auteurs : WENZEL M., HESSE U.

Résumé

CO2 has a high volumetric capacity and a good heat transfer performance but a disadvantage in terms of the coefficient of performance (COP) at high gas cooler temperatures. The reasons are the thermodynamic losses during the throttling process and the high discharge temperatures. The high pressure levels in such a system are a further disadvantage. In our laboratory a piston expander-compressor-unit has been developed and tested to improve the CO2 system COP. Our latest prototype has been integrated in two supermarket refrigeration systems. These first field tests started in a Swiss cash & carry market as well as in an experimental plant with a demo market. In this publication operational experiences and test results at suband transcritical conditions are presented.

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Format PDF

Pages : 8 p.

Disponible

  • Prix public

    20 €

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    Gratuit

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Détails

  • Titre original : CO2 expander-compressor-unit (ECU) in refrigeration systems.
  • Identifiant de la fiche : 30004432
  • Langues : Anglais
  • Source : 10th IIR-Gustav Lorentzen Conference on Natural Working Fluids (GL2012). Proceedings. Delft, The Netherlands, June 25-27, 2012.
  • Date d'édition : 25/06/2012

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