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Energy saving effect of a novel passive air dehumidification unit.

Effet des économies d'énergie d'un nouveau système passif de déshumidification d'air.

Résumé

Concerns on indoor air quality have prompted the researches of novel air dehumidification techniques. This study proposed a new passive air dehumidification system, membrane-based total heat exchanger in which the fresh air is cooled and dried by the exhaust air in summer. To improve performance, a novel concept of composite supported liquid membrane combined with a cross-corrugated triangular duct structure is proposed. The sensible and latent effectiveness are calculated from heat mass transfer correlations. The total heat exchanger based on this concept has a sensible effectiveness of 0.82, and a latent effectiveness of 0.64, which are far higher than current commercial products. Besides, a total of 12.4% energy for air conditioning could be saved with this technology annually.

Détails

  • Titre original : Energy saving effect of a novel passive air dehumidification unit.
  • Identifiant de la fiche : 2009-0742
  • Langues : Anglais
  • Source : Cryogenics and refrigeration. Proceedings of ICCR'2008.
  • Date d'édition : 05/04/2008

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