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Detailed Analysis on Operation Characteristics and Cooling Energy Saving Effect of Chiller Staging in an Office Building
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 Title & Authors
Detailed Analysis on Operation Characteristics and Cooling Energy Saving Effect of Chiller Staging in an Office Building
Seo, Byeong-Mo; Son, Jeong-Eun; Lee, Kwang Ho;
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Commercial buildings account for a significant proportion of the total building energy use in Korea, and cooling energy, in turn, accounts for the largest proportion of total energy consumption in commercial buildings. Under this circumstance, chiller staging is considered to be a reasonable and practical solution for cooling energy saving. In this study, the part-load ratio and the operating characteristics of a vapor compression chiller were analysed within an office building. In addition, energy consumption among different chiller staging schemes was comparatively analysed. As a result, significant proportions of total operating hours, cooling load and energy consumption turned out to be in the part load ratio range from 0% through 50%, and thus energy consumption was significantly affected by the chiller COP at low part-load conditions, indicating that the chiller operation at the part-load is an important factor in commercial buildings. In addition, utilizing a sequential chiller staging scheme can reduce the annual cooling energy usage by more than 10.3% compared to operating a single chiller.
Commercial building;Part load ratio;Chiller staging;Coefficient of performance;EnergyPlus;
 Cited by
Lee, G. J., 2012, Analysis of the Interrelationship between Energy Consumption and Urban Spatial Structure, PhD's Dissertation, Dong-A University, Busan.

Um, G. H., 2006, A study on the energy consumption and the capacity of the HVAC system in office buildings, PhD's Dissertation, Chungwoon University, Hong Seong.

Lee, W. J., Kang, E. C., Lee, E. J., Oh, B. C., and Shin, U. C., 2013, A Study on the operation performance of central plant quipment according to part load characteristics, Korean Journal of Air-Conditioning and Refrigeration Engineering, Vol. 25, pp. 392-397. crossref(new window)

Park, Y. and Jung, S. S., 2002, Life cycle costing through operating number control of air conditioning systems in office buildings, Korean Journal of Air-Conditioning and Refrigeration Engineering, Vol. 14, pp. 981-988.

Yoon, K. C., Part, D. Y., Yun, G., Kim, Y. M., Kim, Y. S., and Kim, K. S., 2013, The heating energy saving effect by operating number control of boilers in office building, Korean Institute of Architectural Sustainable Environment and Building Systems (KIAEBS), Vol. 7, pp. 120-125.

EnergyPlus Input Output Reference, The Encyclopedic to EnergyPlus Input and Output, 2011.

Crawley D. B., Lawrie L. K., Winkelmann F. C., Buhl, W. F., Huang H. J., Pedersen C. O., Strand R.K., Liesen R. J., Fisher D. E., Witte M. J., and Glazer J., 2001, EnergyPlus:creating a new-generation building energy simulation program, Energy and Buildings, Vol. 33, No. 4, pp. 319-331. crossref(new window)

Kim, S. U., 2014, Technology of energy simulation, International Journal of Air-Conditioning and Refrigeration, Vol. 43, pp. 23-38.

ASHRAE Fundamentals Handbook, American Society of Heating, Refrigerating and Air-Conditioning Engineers, Inc., 2009.

EnergyPlus, Testing and Validation,

ASHRAE, 2013, ANSI/ASHRAE Standard 62.1-2013-Ventilation for Acceptable Indoor Air Quality.

Seo, B. M., Yu, B. H., and Lee, K. H., 2015, Detailed analysis on part load ratio and cooling energy characteristics of chiller operation in an office building, Korean Journal of Air-Conditioning and Refrigeration Engineering, Vol. 27, No. 11, pp. 567-573. crossref(new window)

EnergyPlus Engineering Reference, Simulation Models and Encyclopedic Reference, 2011.