Partager

Le refroidissement naturel appliqué au conditionnement d’air : examen de son potentiel en Suisse.

Free cooling in air conditioning: Investigation of its potential in Switzerland.

Numéro : 0792

Auteurs : STEIGER S., STAHEL C.

Résumé

In air conditioning, free cooling is often used for saving energy. Free cooling is understood here as a bypass water circuit with direct recooling by the environment, not heat removal by nightly ventilation. Contrary to common practice in Switzerland, free cooling is not always economically beneficial. To estimate its potential in air conditioning systems, there are no generally applicable evaluation criteria or guidelines available. The aim of this work is to assess the free cooling potential in Switzerland by applying quasistatic simulations depending on supply temperature, application, location, circuit and type of heat discharge. The results show that supply temperature is the most influential parameter. Below 14 °C all investigated applications (except data centers) show generally less than 10% of free cooling amount in total annual cooling load, therefore not economically benefitting from it. Furthermore, the potential is strongly dependent on climate at the location. Cold regions like the Swiss alps allow longer yearly free cooling operation than warmer regions. If recoolers are used to pre-cool the returning cold water flow, the free cooling potential can almost be doubled. 

Documents disponibles

Format PDF

Pages : 11 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 : Free cooling in air conditioning: Investigation of its potential in Switzerland.
  • Identifiant de la fiche : 30033502
  • Langues : Anglais
  • Sujet : Technologie
  • Source : 14th IEA Heat Pump Conference 2023, Chicago, Illinois.
  • Date d'édition : 05/2023

Liens


Voir d'autres communications du même compte rendu (166)
Voir le compte rendu de la conférence

Indexation