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Document IIF

Conception et stratégie de contrôle d’une innovante pompe à chaleur monobloc à usage résidentiel fonctionnant au CO2 pour la production d’eau chaude sanitaire.

Design and control strategy of an innovative CO2 residential monoblock heat pump for domestic hot water.

Numéro : 0635

Auteurs : FIABANE C., PADOAN L., VIRGILIO F., SIMONI F., BUTI M., PIOVESAN S., SOYLEMEZ E., HAZARIKA M. M., HAFNER A.

Résumé

Carbon dioxide (CO2) as a natural refrigerant (R744) proves its potentiality and suitability for residential heat pumps (HP) producing domestic hot water (DHW). Despite the comparable performances of a CO2 HP to units adopting other natural and/or synthetic refrigerants, the components cost represents the main barrier to CO2‘s wider market share, mainly for higher working pressure and low mass production ratios. This work presents the thermodynamical and control strategy design of a monoblock HP for DHW with CO2. The product’s uniqueness is being the first with a heating capacity lower than 4 kW on the residential heating market. In particular, the study will focus on the thermodynamic transcritical cycle, component dimensioning and control logic development. The design took into consideration different technologies and solutions for both gas cooler and water storage tank, improving the heat transfer, coefficient of performance, heating-up time and stratification inside the water tank. On the control side, CO2 involves new algorithms regulating two different expansion valves aimed to adjust: high-side pressure level, superheating the compressor inlet condition and oil return at the same time.

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Format PDF

Pages : 9

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 : Design and control strategy of an innovative CO2 residential monoblock heat pump for domestic hot water.
  • Identifiant de la fiche : 30033320
  • Langues : Anglais
  • Source : 11th IIR Conference on Compressors and Refrigerants.
  • Date d'édition : 09/2024
  • DOI : http://dx.doi.org/10.18462/iir.compr.2024.0635

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