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Document IIF

Ultra-efficient ammonia systems.

Systèmes à l'ammoniac ultra-efficaces.

Auteurs : PEARSON S. F.

Résumé

The paper describes a proven method of producing chilled water by means of ammonia refrigeration. The method uses special valves and heat transfer surfaces to allow heat to be rejected to ambient when conditions are suitable, without running the compressor. Yearly average coefficients of performance of 13-15 have been achieved in North European climates. About twenty such systems have been installed over the past twenty years. There are many existing conventional systems providing the same function with lower reliability at about one-third of the efficiency that could have been achieved by using the author's system. The system is particularly suitable for providing refrigeration for chilled ceilings but its major application has been to the cooling of main frame computer centres.

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Pages : 2007-2

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Détails

  • Titre original : Ultra-efficient ammonia systems.
  • Identifiant de la fiche : 2007-1924
  • Langues : Anglais
  • Sujet : Technologie
  • Source : Ammonia Refrigeration Technology for Today and Tomorrow.
  • Date d'édition : 19/04/2007

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