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Energy performance enhancement of Hong Kong International Airport through chilled water system integration and control optimization.

Author(s) : SUN Y., WANG S., CUI B., et al.

Type of article: Article

Summary

Poor energy performances of building systemsare often observed in practice, especially under off-design conditions (i.e. at low part-load ratios). In order to overcome such problems, most existing methods are developed merely considering single systems or buildings. Unlike them, a method integrating the chilled water systems in the neighboring buildings is proposed to enhance the overall energy performance of Hong Kong International Airport. The system integration allows the excessive cooling from one building to be delivered to the other. In addition, one 1000- RT chiller is relocated from Terminal 2 to Terminal 1. After the system integration and chiller relocation, three different-sized chillers can be selected to satisfy the overall cooling load with higher part-load ratios. Meanwhile, control optimizations of chillers and seawater pumps also contribute to system-energy performance improvement. With limited investment cost and easy implementation, the proposed method and the control optimization significantly enhance the airport system energy performance. The direct field data comparison demonstrated the average chiller plant COP value improved by 5.93%. The simulated case studies indicated an annual energy saving about 4.70 M kWh is achievable.

Details

  • Original title: Energy performance enhancement of Hong Kong International Airport through chilled water system integration and control optimization.
  • Record ID : 30008385
  • Languages: English
  • Source: Applied Thermal Engineering - vol. 60 - n. 1-2
  • Publication date: 2013/10
  • DOI: http://dx.doi.org/10.1016/j.applthermaleng.2013.06.025

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