Optimal environmental performance of water-cooled chiller system with all variable speed configurations.
Number: pap. B1-002
Author(s) : YU F. W., CHAN K. T.
Summary
This study investigates how the environmental performance of water-cooled chiller systems can be optimized by applying load-based speed control to all the system components. New chiller and cooling tower models were developed using a transient systems simulation program called TRNSYS 15 in order to assess the electricity and water consumption of a chiller plant operating for a building cooling load profile. The chiller model was calibrated using manufacturer’s performance data and used to analyze the coefficient of performance when the design and control of chiller components are changed. The NTU-effectiveness approach was used for the cooling tower model to consider the heat transfer effectiveness at various air-to-water flow ratios and to identify the makeup water rate. Applying load-based speed control to the cooling tower fans and pumps could save an annual plant operating cost by around 15% relative to an equivalent system with constant speed configurations.
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Pages: 8 p.
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Details
- Original title: Optimal environmental performance of water-cooled chiller system with all variable speed configurations.
- Record ID : 30004932
- Languages: English
- Source: ACRA2010. Asian conference on refrigeration and air conditioning: Tokyo, Japan, June 7-9, 2010.
- Publication date: 2010/06/07
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Indexing
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Optimal environmental performance of water-cool...
- Author(s) : YU F. W., CHAN K. T.
- Date : 2010
- Languages : English
- Source: Transactions of the Japan Society of Refrigerating and Air Conditioning Engineers - vol. 27 - n. 4
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A simplified black-box model oriented to chille...
- Author(s) : ROMERO J. A., NAVARRO-ESBRÍ J., BELMAN-FLORES J. M.
- Date : 2011/02
- Languages : English
- Source: Applied Thermal Engineering - vol. 31 - n. 2-3
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Energieeinsparung durch Verdichter-Drehzahlrege...
- Author(s) : NEY A.
- Date : 1999/08
- Languages : German
- Source: Kälte + Klimatechnik (Die) - vol. 52 - n. 8
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Temperature-dependent thermodynamic chiller mod...
- Author(s) : LIU C. C., CHUNG J. C., CHIANG H. C., et al.
- Date : 2010/06/07
- Languages : English
- Source: ACRA2010. Asian conference on refrigeration and air conditioning: Tokyo, Japan, June 7-9, 2010.
- Formats : PDF
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Utilisation de la vitesse variable dans les ate...
- Author(s) : LEDUCQ D., GUILPART J., TRYSTRAM G.
- Date : 2000/11/21
- Languages : French
- Source: Les économies d'énergie dans le froid en agroalimentaire : de la bonne utilisation des fluides frigorigènes. Journée française du Froid. Recueil des conférences.
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