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Recherche expérimentale d'un système de pompe à chaleur transcritique au CO2 avec double détendeur.

[In Chinese. / En chinois.]

Auteurs : WANG Z., GONG Y., WU X., et al.

Type d'article : Article

Résumé

A new transcritical CO2 heat pump systems with dual expansion valve and balance CO2 liquid reservoir adjustment device was introduced. The influence of the internal heat exchanger (IHX) on the system performances was analyzed on the basis of relative COP and compressor power. It is concluded that the compressor power of system with IHX is relatively low when the high side pressure is over 10MPa, and the evaporating temperature is below 0°c. The COP of the system without IHX is about 3% to 5% higher than the system with IHX when the evaporating temperature is over 5°C. The new devices can control high and low side pressure effectively, and decrease the impact of pressure fluctuations on its COP. The experimental results provide important basis for the development of the transcritical CO2 heat pump systems.

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Format PDF

Pages : 57-62

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  • Prix public

    20 €

  • Prix membre*

    15 €

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

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