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Etude sur une approche optimale de la stratégie de régulation de la température de l'eau de condensation permettant d'économiser de l'énergie.

A study on an optimal approach temperature control strategy of condensing water temperature for energy saving.

Auteurs : LIU C. W., CHUAH Y. K.

Type d'article : Article, Article de la RIF

Résumé

An optimal approach temperature (OAT) control strategy is proposed for resetting the condensing water temperature hourly, so to maximize the performance of the combined water chiller and cooling tower system. A system performance factor is introduced for evaluation of the system performance. A regression function is presented for the calculation of an optimal condensing water temperature at each hour of air-conditioning operation. The parameters in the regression function include the ambient wet bulb temperature, the chiller load ratio at the hour, and a dimensionless relative efficiency of chiller and cooling tower. The regression function has an R2 close to 1 compared to the computed results. When applied to two cities in Taiwan, the OAT control strategy has a potential to save energy more than 4% on an annual basis. The OAT control strategy is most advantageous when applied to regions with large seasonal variation of wet bulb temperature.

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Pages : pp. 816-823

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    20 €

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Détails

  • Titre original : A study on an optimal approach temperature control strategy of condensing water temperature for energy saving.
  • Identifiant de la fiche : 2011-0113
  • Langues : Anglais
  • Source : International Journal of Refrigeration - Revue Internationale du Froid - vol. 34 - n. 3
  • Date d'édition : 05/2011

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