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Compréhension fondamentale du transfert de chaleur et de masse dans un absorbeur à ammoniac/eau : rapport définitif.

Fundamental understanding of heat and mass transfer in the ammonia/water absorber: final report.

Auteurs : Georgia Tech Research Institute, GARIMELLA S.

Type de monographie : Rapport

Résumé

This report was prepared as an account of work sponsored by ARTI under its HVAC&R Research for the 21st Century Program. An experimental investigation of heat and mass transfer in a horizontal tube falling-film ammonia-water absorber was conducted. A test facility consisting of all the components of a functional absorption chiller was fabricated specifically for this investigation. Thus, a steam-heated desorber was used to generate ammonia-water vapour over a wide range of conditions. The ammonia-water vapour was rectified and condensed, followed by recuperative heat exchange before being expanded to the evaporator pressure. The cooling load was supplied to the evaporator by a combination of resistance heating and closed loop fluid heating. The evaporated refrigerant was preheated recuperatively by the fluid exiting the condenser and then flowed to the absorber to be absorbed in the test section. A solution heat exchanger between the absorber and desorber (and in some tests, a solution preconditioner upstream of the absorber) completed the ammonia-water loop.

Détails

  • Titre original : Fundamental understanding of heat and mass transfer in the ammonia/water absorber: final report.
  • Identifiant de la fiche : 2009-1836
  • Langues : Anglais
  • Édition : Arti (air-conditioning and refrigeration technology institute) - États-unis/États-unis
  • Date d'édition : 06/2007
  • Source : Source : ARTI-21CR-612-10050-02; 176 p.; fig.; photogr.; tabl.; ref.; append.

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