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Improved energy performance of air-cooled chiller system with mist pre-cooling mist improvement on air-cooled chillers.

Author(s) : YU F. W., CHAN K. T.

Type of article: Article

Summary

This study investigates how to lower the dry bulb temperature of outdoor air via mist pre-cooling to enhance the coefficient of performance (COP) of an air-cooled chiller system. Based on standard chiller models in commercial simulation software DOE-2E, a modified model was made to analyse how the chiller COP varies under two different condensing temperature controls with mist pre-cooling of air entering the air-cooled condenser. Drawing on the model calibrated by manufacturer and operating data, it was estimated that around 18% decrease in the electricity consumption could be achieved by coupling floating condensing temperature control with an optimal mist generation rate, with regard to a chiller system serving a hotel in a sub-tropical climate. Remarks have been made on how optimal mist control can be implemented to maximize electricity savings while reducing surplus mist carrying over the condenser coil. [Reprinted with permission of Elsevier. Copyright 2011.]

Details

  • Original title: Improved energy performance of air-cooled chiller system with mist pre-cooling mist improvement on air-cooled chillers.
  • Record ID : 30003596
  • Languages: English
  • Source: Applied Thermal Engineering - vol. 31 - n. 4
  • Publication date: 2011/03
  • DOI: http://dx.doi.org/10.1016/j.applthermaleng.2010.10.012

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