Partager

Conception, fabrication et étude de la performance d'une unité militaire de contrôle de l'environnement de 35 kW (10 tonnes) utilisant le R744 en cycle transcritique.

Design, build-up, and performance investigation of a 35 KW (10 ton) military environmental control unit using transcritical R744 technology.

Numéro : pap. n. R1, 2205

Auteurs : ELBEL S., HRNJAK P.

Résumé

Transcritical R744 technology was used to design and build a compact, lightweight unitary-type air-conditioner for military shelter cooling. The design focus was to achieve high energy efficiencies during operation in hot ambient temperatures. High performance prototype components were used to realize the target performance of 35 kW at the high ambient temperature rating condition (outdoor: 51.7 oC, indoor: 32.2 oC - 50%RH). Experiments showed that the COP of this new R744 Environmental Control Unit (ECU) is approximately 30% higher than that of a comparable R134a ECU and approximately 20% higher than that of a comparable R410A ECU (based on manufacturer data). ECU compactness was determined by calculating cooling output per ECU weight and volume. The new 35 kW R744 ECU was found to be 60% (cooling per weight ratio) and 40% (cooling per volume ratio) more compact than comparable R134a technology. The compactness levels of R744 and R410A technology were found to be approximately equal.

Documents disponibles

Format PDF

Pages : 8 p.

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 : Design, build-up, and performance investigation of a 35 KW (10 ton) military environmental control unit using transcritical R744 technology.
  • Identifiant de la fiche : 30000479
  • Langues : Anglais
  • Sujet : Technologie
  • Source : 2010 Purdue Conferences. 13th International Refrigeration and Air-Conditioning Conference at Purdue.
  • Date d'édition : 12/07/2010

Liens


Voir d'autres communications du même compte rendu (121)
Voir le compte rendu de la conférence

Indexation