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Utilisation d’une pompe à chaleur au CO2 pour récupérer et utiliser la chaleur perdue dans une laiterie équipée d’un système frigorifique à l’ammoniac.

CO2 heat pump for waste heat recovery and utilization in dairy industry with ammonia based refrigeration.

Auteurs : SINGH S., DASGUPTA M. S.

Type d'article : Article, Article de la RIF, Étude de cas

Résumé

Based on field data from a medium scale ammonia based milk refrigeration plant located in northern India, a trans-critical CO2 heat pump system with IHX is conceptualized for waste heat utilization. The waste heat is utilized to pre-heating the boiler feed water and thereby reduces energy consumption.A thermodynamic model of the refrigeration system is built and simulated for year-round field data. In this study, the condenser of the ammonia based refrigeration system is coupled with the evaporator of the proposed CO2 heat pump which is maintained at 20 °C year-round. The heat pump delivers heat at about 70 °C to pre-heat the boiler feed water drawn from underground source and is available in temperature range of 25 °C to 29 °C year-round. Thus, the CO2 heat pump performance is essentially independent of variation in ambient temperature.We reported reduction in CO2 emission and reduction in total energy cost by approximately 45.7% and 33.8% respectively. Economic analysis shows the payback period (PBP) is about 40 months.

Documents disponibles

Format PDF

Pages : 108-120

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 : CO2 heat pump for waste heat recovery and utilization in dairy industry with ammonia based refrigeration.
  • Identifiant de la fiche : 30021564
  • Langues : Anglais
  • Source : International Journal of Refrigeration - Revue Internationale du Froid - vol. 78
  • Date d'édition : 06/2017
  • DOI : http://dx.doi.org/10.1016/j.ijrefrig.2017.03.009

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