Optimal piping design for enhanced energy saving in district cooling system - A case study

Chia Yen Lee, Ming Tsun Ke, Chin Lung Chang, Chien Hsiung Tsai, Lung-Ming Fu, Chiu Feng Lin

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

This study performs a numerical investigation into the power consumption characteristics of various primary-secondary chilled water circuit designs in a district cooling system (DCS) installed in six buildings located within the same block in Taipei, Taiwan. An E20-II model is created of the DCS and a series of simulations are performed to determine the primary-secondary chilled water piping design which maximizes the energy saving obtained in the DCS over the course of a typical year. It is shown that the use of a region-pumping system or a boost-pumping system reduces the power consumption of the secondary chilled water circuit by 26.5% and 29.9%, respectively, compared to that of a common-pumping system. In addition, the results show that for a practical chilled water system in which the temperature differential on the primary side is 5.0°C while that on the secondary side is 6.5°C, an average monthly energy saving of around 5∼7% is obtained compared to a DCS with equal temperature differentials in the primary-secondary circuits provided that the flow rate and the temperature differential of the chilled water in the primary circuit are a little less than those in the secondary circuit.

Original languageEnglish
Title of host publicationProgress in Power and Electrical Engineering
Pages744-752
Number of pages9
DOIs
Publication statusPublished - 2012 Jan 1
Event2011 International Conference on Energy, Environment and Sustainable Development, ICEESD 2011 - Shanghai, China
Duration: 2011 Oct 212011 Oct 23

Publication series

NameAdvanced Materials Research
Volume354-355
ISSN (Print)1022-6680

Other

Other2011 International Conference on Energy, Environment and Sustainable Development, ICEESD 2011
CountryChina
CityShanghai
Period11-10-2111-10-23

Fingerprint

Cooling systems
Energy conservation
Networks (circuits)
Water
Electric power utilization
Temperature
Flow rate

All Science Journal Classification (ASJC) codes

  • Engineering(all)

Cite this

Lee, C. Y., Ke, M. T., Chang, C. L., Tsai, C. H., Fu, L-M., & Lin, C. F. (2012). Optimal piping design for enhanced energy saving in district cooling system - A case study. In Progress in Power and Electrical Engineering (pp. 744-752). (Advanced Materials Research; Vol. 354-355). https://doi.org/10.4028/www.scientific.net/AMR.354-355.744
Lee, Chia Yen ; Ke, Ming Tsun ; Chang, Chin Lung ; Tsai, Chien Hsiung ; Fu, Lung-Ming ; Lin, Chiu Feng. / Optimal piping design for enhanced energy saving in district cooling system - A case study. Progress in Power and Electrical Engineering. 2012. pp. 744-752 (Advanced Materials Research).
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abstract = "This study performs a numerical investigation into the power consumption characteristics of various primary-secondary chilled water circuit designs in a district cooling system (DCS) installed in six buildings located within the same block in Taipei, Taiwan. An E20-II model is created of the DCS and a series of simulations are performed to determine the primary-secondary chilled water piping design which maximizes the energy saving obtained in the DCS over the course of a typical year. It is shown that the use of a region-pumping system or a boost-pumping system reduces the power consumption of the secondary chilled water circuit by 26.5{\%} and 29.9{\%}, respectively, compared to that of a common-pumping system. In addition, the results show that for a practical chilled water system in which the temperature differential on the primary side is 5.0°C while that on the secondary side is 6.5°C, an average monthly energy saving of around 5∼7{\%} is obtained compared to a DCS with equal temperature differentials in the primary-secondary circuits provided that the flow rate and the temperature differential of the chilled water in the primary circuit are a little less than those in the secondary circuit.",
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Lee, CY, Ke, MT, Chang, CL, Tsai, CH, Fu, L-M & Lin, CF 2012, Optimal piping design for enhanced energy saving in district cooling system - A case study. in Progress in Power and Electrical Engineering. Advanced Materials Research, vol. 354-355, pp. 744-752, 2011 International Conference on Energy, Environment and Sustainable Development, ICEESD 2011, Shanghai, China, 11-10-21. https://doi.org/10.4028/www.scientific.net/AMR.354-355.744

Optimal piping design for enhanced energy saving in district cooling system - A case study. / Lee, Chia Yen; Ke, Ming Tsun; Chang, Chin Lung; Tsai, Chien Hsiung; Fu, Lung-Ming; Lin, Chiu Feng.

Progress in Power and Electrical Engineering. 2012. p. 744-752 (Advanced Materials Research; Vol. 354-355).

Research output: Chapter in Book/Report/Conference proceedingConference contribution

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Lee CY, Ke MT, Chang CL, Tsai CH, Fu L-M, Lin CF. Optimal piping design for enhanced energy saving in district cooling system - A case study. In Progress in Power and Electrical Engineering. 2012. p. 744-752. (Advanced Materials Research). https://doi.org/10.4028/www.scientific.net/AMR.354-355.744