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Étude paramétrique en régime permanent des performances des chauffe-eau à absorption semi-ouverts à pompe à chaleur.

Steady-state parametric study of semi-open absorption heat pump water heater performance.

Numéro : 2672

Auteurs : KUMAR N., GLUESENKAMP K. R., YANG Z., ABU-HEIBA A., PATEL V. K., BHAGWAT R., SANADHYA S., RODE R., SCHMID M., MOGHADDAM S.

Résumé

Water heating and dehumidification are major energy consumers in buildings. The novel semi-open absorption heat pump design utilizes the heat of absorption from the dehumidification of space for water heating. The architecture of the system consists of (1) a plate and frame membrane-based absorber, (2) a membrane-based desorber and condenser unit, (3) heat exchangers, (4) ionic liquid, and (5) a 189.3 L (50-gal) water tank. The membrane-based absorber enables heat and mass transfer between three streams: moist air, ionic liquid, and the heat transfer fluid. The heat of vapor absorption elevates the ionic liquid temperature and, in turn, heats the heat transfer fluid. In the desorber unit, the diluted ionic liquid after absorption is heated to above 150℃ and reconcentrated. The heat of condensation from the condensation of water vapor in the condenser is utilized for water heating. The dehumidification performance of the absorber directly affects the COP and heating capacity of the system. Understanding the absorber's performance at various operating conditions would allow one to optimize and design a better performing absorber. In this study, the absorber's water heating capacity and performance are evaluated for varying operating conditions. A maximum COP of 1.25 while water heating water from 18.6 to 60.2°C was achieved at a capacity of 1,010 Watts and an airflow rate of 47.19 L/s. Increasing the desorber oil mass flowrate had negligible effect on the COP. The average mass transfer resistance of the porous membrane absorber was 1.164 *107 m/s.

Documents disponibles

Format PDF

Pages : 9

Disponible

  • Prix public

    20 €

  • Prix membre*

    15 €

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

Détails

  • Titre original : Steady-state parametric study of semi-open absorption heat pump water heater performance.
  • Identifiant de la fiche : 30028580
  • Langues : Anglais
  • Source : 2021 Purdue Conferences. 18th International Refrigeration and Air-Conditioning Conference at Purdue.
  • Date d'édition : 05/2021
  • Document disponible en consultation à la bibliothèque du siège de l'IIF uniquement.

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