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Un prototype de pompe à chaleur Stirling à piston libre de 2 kW adapté aux régions froides pour le chauffage domestique.

A 2 kW-class free-piston Stirling heat pump prototype suitable for cold regions for domestic heating.

Auteurs : DAI L., LUO K., SUN Y., HU J., ZHANG L., WU Z., LUO E.

Type d'article : Article de la RIF

Résumé

Compared with conventional vapour-compression heat pump technology, the free-piston Stirling heat pump technology attracts wide attention for its high efficiency, reliability, and environmental friendliness. In this work, a free-piston Stirling heat pump prototype with a two-kilowatt capacity, which can operate with an outside ambient temperature ranging from -20 to 10 °C, was designed, built and tested. First, numerical simulations were carried out to explore the distributions of the acoustic field and exergy loss. Second, the effects of several operating parameters on the heating performance were numerically investigated in detail. Finally, to validate the accuracy of the simulation results, verification experiments were conducted on the experimental platform of a free-piston Stirling heat pump driven by a dual-opposed linear compressor. Experimental data show that with a hot-end temperature of 45 °C and outside ambient temperature of 0 °C, the prototype achieved a heating capacity of 2253 W with a corresponding COPh of 2.76 (based on PV power input) and a relative Carnot efficiency of 39.1 %; in particular, the prototype was able to achieve a COPh of 2.5 when pumping heat from -20 °C to 45 °C for 3.25 MPa mean pressure. The simulation and experimental results demonstrated that the free-piston Stirling heat pump system has good potential to achieve high efficiency as a heating supply in a cold region.

Documents disponibles

Format PDF

Pages : 112-123

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 : A 2 kW-class free-piston Stirling heat pump prototype suitable for cold regions for domestic heating.
  • Identifiant de la fiche : 30032215
  • Langues : Anglais
  • Sujet : Technologie
  • Source : International Journal of Refrigeration - Revue Internationale du Froid - vol. 159
  • Date d'édition : 03/2024
  • DOI : http://dx.doi.org/doi.org/10.1016/j.ijrefrig.2023.12.030

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