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Les effets de la pression à l'entrée d'un refroidisseur de gaz sur la performance du système dans des sèche-linge à pompe à chaleur.

The effects of gas cooler inlet pressure on system performance in heat pump tumble dryers.

Numéro : pap. 2359

Auteurs : ERDEM S., ONAN C., HEPERKAN H., et al.

Résumé

Heat pumps working with CO2 as a refrigerant have low energy consumptions depending on selected application areas and operating conditions. The use of CO2 in heat pump dryers is feasible if operating temperatures are appropriate. In heat pump dryers working with CO2 according to the transcritical cycle, one of the most important operating conditions is optimum gas cooler inlet pressure, which gives the maximum coefficient of performance (COP). In this study, a model was developed by using MATLAB software for heat pump tumble dryer working with CO2. The model was validated by experimental data taken from existing literature. Then, COP, moisture extraction rate (MER), and specific moisture extraction rate (SMER) were found by running the model at different gas cooler inlet pressures (80–140 bar). All results were calculated in the same geometry for evaporator, gas cooler, and compressor. Thus, effects on the results of variation of the geometrical features were eliminated. Optimum gas cooler inlet pressure was determined with data input to the model as 100 bar for the system. In the optimum gas cooler inlet pressure working condition, SMER increased 24% and 12% by comparison with 80 bar and 140 bar gas cooler inlet pressure, respectively.

Documents disponibles

Format PDF

Pages : 9 p.

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 : The effects of gas cooler inlet pressure on system performance in heat pump tumble dryers.
  • Identifiant de la fiche : 30013276
  • Langues : Anglais
  • Source : 2014 Purdue Conferences. 15th International Refrigeration and Air-Conditioning Conference at Purdue.
  • Date d'édition : 14/07/2014

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