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Document IIF

Evaluation des économies d'énergie d'un système de conditionnement d'air avec refroidissement à haute température et chauffage à basse température dans un bureau à Tokyo.

High-temperature cooling & low-temperature heating AC system evaluation of energy saving in an office in Tokyo.

Numéro : pap. n. 732

Auteurs : URANO K., SUMITA A.

Résumé

While the efficiency of water piping central AC systems has improved greatly, improving in the efficiency of the overall system had been a problem that needed to be solved. The High-Temperature Cooling & Low-Temperature Heating AC System (WATER EXCEL) centers on using a medium temp. refrigerant, having a large temp. difference between the inlet/outlet of a heat-exchanger, having low temp. air-blow, adjusting control of OA/RA volume at the chamber room and ensuring a radiant and laminar flow. A new specification has been established “10;10;13”. We took measurements in an office building in Tokyo for one year to evaluate the energy-saving properties and comfort of this system. New specification “(1)10;(2)10;(3)13” refers to reference temperatures for an energy transfer medium. (1) Cold water temperature is 10°C (improved heat source efficiency by shifting from the conventional 7°C to 10°C toward middle temperature). (2) Coil doorway difference of temperature is 10K. (reduction in pump power by having a larger temperature difference from 5K to 10K and water volume reduction). (3) Cooling air supply temperature is 13°C (reduction in blowing power by reducing air volume from the conventional 16°C)

Documents disponibles

Format PDF

Pages : 8 p.

Disponible

  • Prix public

    20 €

  • Prix membre*

    Gratuit

* meilleur tarif applicable selon le type d'adhésion (voir le détail des avantages des adhésions individuelles et collectives)

Détails

  • Titre original : High-temperature cooling & low-temperature heating AC system evaluation of energy saving in an office in Tokyo.
  • Identifiant de la fiche : 30015446
  • Langues : Anglais
  • Source : Proceedings of the 24th IIR International Congress of Refrigeration: Yokohama, Japan, August 16-22, 2015.
  • Date d'édition : 16/08/2015
  • DOI : http://dx.doi.org/10.18462/iir.icr.2015.0732

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