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Experimental investigation on NH3–H2O compression-assisted absorption heat pump (CAHP) for low temperature heating in colder conditions.

Étude expérimentale d'une pompe à chaleur à NH3-H2O [à absorption] assistée par compression (CAHP) pour un chauffage à basse température dans des conditions froides.

Auteurs : WU W., WANG B., SHANG S., et al.

Type d'article : Article, Article de la RIF

Résumé

The coefficient of performance (COP) and heating capacity of the absorption heat pump (AHP) decreased obviously as the evaporator inlet temperature dropped. Compression-assisted AHP (CAHP) could operate efficiently in colder conditions, and a prototype was constructed for experimental investigation. At a generator inlet of 130 °C, as the evaporator inlet decreases from -5?°C to -25?°C, the COP drops from 1.513 to 1.372, while the heating capacity deteriorates from 77.26?kW to 47.11?kW. Comparisons between CAHP and normal AHP indicated that CAHP can extend the lower limit of evaporator inlet temperature from -10?°C to -25?°C. Besides, CAHP can enhance the heating capacity by approximately 55.5–85.0% even when AHP can operate normally. Moreover, the improvement contributed by CAHP is greater under much colder conditions. The heating COP and capacity of CAHP are improved in all the conditions, while the primary energy efficiency is advantageous under lower evaporator inlet temperatures.

Documents disponibles

Format PDF

Pages : 109-124

Disponible

  • Prix public

    15 €

  • Prix membre*

    Gratuit

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

Détails

  • Titre original : Experimental investigation on NH3–H2O compression-assisted absorption heat pump (CAHP) for low temperature heating in colder conditions.
  • Identifiant de la fiche : 30017762
  • Langues : Anglais
  • Source : International Journal of Refrigeration - Revue Internationale du Froid - vol. 67
  • Date d'édition : 07/2016

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