Impacts on building return water temperature in district cooling systems

Gang Wang, Bin Zheng, Mingsheng Liu

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

Abstract

A high temperature differential between supply and return water is most cost effective in district cooling systems. The chilled water supply temperature relies on central plant operation while the chilled water return temperature mainly depends on cooling coil performance of air handling units (AHU) at consumers. Many factors affect the AHU cooling coil performance at the consumers, such as cooling coil size, chilled water supply temperature, AHU supply air temperature, space cooling load, outside airflow and conditions, cooling coil fouling condition and cooling coil control valves types. The AHU chilled water return temperature may deviate from its design valve under off-design conditions. The common method to maintain the required consumer chilled water return temperature is to install a bypass bridge between the chilled water supply and return at consumer connections. This paper studies the impact of these factors on the AHU chilled return water temperature and finally develops the improved chilled water return temperature control method.

Original languageEnglish
Title of host publicationInternational Solar Energy Conference
Pages441-448
Number of pages8
DOIs
StatePublished - Nov 19 2007
Externally publishedYes
Event2006 International Solar Energy Conference, ISEC2006 - Denver, CO, United States
Duration: Jul 8 2006Jul 13 2006

Other

Other2006 International Solar Energy Conference, ISEC2006
CountryUnited States
CityDenver, CO
Period7/8/067/13/06

Fingerprint

water temperature
cooling systems
Cooling systems
cooling
Cooling
coils
water
Water
air
Air
Water supply
water supply
Temperature
temperature
air temperature
control valves
bypass
fouling
bypasses
temperature control

ASJC Scopus subject areas

  • Space and Planetary Science
  • Renewable Energy, Sustainability and the Environment

Cite this

Wang, G., Zheng, B., & Liu, M. (2007). Impacts on building return water temperature in district cooling systems. In International Solar Energy Conference (pp. 441-448) https://doi.org/10.1115/ISEC2006-99148

Impacts on building return water temperature in district cooling systems. / Wang, Gang; Zheng, Bin; Liu, Mingsheng.

International Solar Energy Conference. 2007. p. 441-448.

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

Wang, G, Zheng, B & Liu, M 2007, Impacts on building return water temperature in district cooling systems. in International Solar Energy Conference. pp. 441-448, 2006 International Solar Energy Conference, ISEC2006, Denver, CO, United States, 7/8/06. https://doi.org/10.1115/ISEC2006-99148
Wang G, Zheng B, Liu M. Impacts on building return water temperature in district cooling systems. In International Solar Energy Conference. 2007. p. 441-448 https://doi.org/10.1115/ISEC2006-99148
Wang, Gang ; Zheng, Bin ; Liu, Mingsheng. / Impacts on building return water temperature in district cooling systems. International Solar Energy Conference. 2007. pp. 441-448
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