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Document IIF

Développement d’une pompe à chaleur à adsorption d’ammoniac-carbone.

Ammonia - carbon adsorption heat pump development.

Numéro : pap. n. 543

Auteurs : CRITOPH R., METCALF S., RIVERO PACHO A.

Résumé

The overall objective of the research is to develop a domestic air source gas-fired heat pump to replace standard condensing boilers cost-effectively. The working pair is ammonia and active carbon. A succession of sorption generators have been prototyped, culminating in the 'kebab' design in which monolithic carbon is compressed between aluminum fins on a steel tube containing pressurized water that either heats or cools the adsorbent in a two-bed cycle with heat and mass recovery. A 10 kW system was built and tested. Initial results were poor with Coefficient of Performance (COP) a little above 1. This was due to mass transfer resistance in adsorption being too high, due to an excessive binder fraction. A new formulation has been tested in a single 'kebab' and the results are consistent with an internal COP of 1.40 when delivering 10 kW at 50°C and evaporating at 0°C or 1.34 when delivering 20 kW.

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Pages : 7

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Détails

  • Titre original : Ammonia - carbon adsorption heat pump development.
  • Identifiant de la fiche : 30026454
  • Langues : Anglais
  • Source : Proceedings of the 25th IIR International Congress of Refrigeration: Montréal , Canada, August 24-30, 2019.
  • Date d'édition : 24/08/2019
  • DOI : http://dx.doi.org/10.18462/iir.icr.2019.0543

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