City University of Hong Kong Department Name

 

District cooling system

 

Land reclamation has been a long term government policy of expanding the Hong Kong urban areas along the waterfront. These flat pieces of land are ideal sites for the application of district cooling technology. At a central refrigeration plant, chilled water is generated and supplied to a district to support the air-conditioning systems in buildings. Because of the large-scale production, together with the convenience of bringing in seawater for condenser cooling, the chiller plant is higher in efficiency than those in individual buildings. The customers can also use the building space of their own more effectively. Energy modeling methodology and decision approach were derived for determining the most desirable scheme for a given project. The process involves a series of building design load computation, dynamic simulation, and plant energy consumption analyses for different phases of development. Various optimization techniques were used.

Basic DCS provisions for subtropical climate 

 

DCS plant component network under TRNSYS simulation platform 

                            One proposed district cooling site in Hong Kong C the South East Kowloon Development

 

Related publications:

Journal articles:

Chow TT, Chan A, Fong KF, Yau R, Au WH, Cheng V. Energy study of a proposed district cooling system in Hong Kong. Proceedings of 1st International Conference on Sustainable Energy and Green Architecture, Bangkok, Thailand, Oct 2003, pp.GA091-097.

Chow TT, Chan ALS, Song CL. Building mix optimization in district cooling system implementation. Applied Energy, 77(1), 2004, 1-13.

Chow TT,  Au WH, Yau R, Cheng V, Chan A, Fong KF. Applying district cooling technology in Hong Kong. Applied Energy, 79(3), 2004, 275-289.

Chow TT, Fong KF, Chan ALS, Yau R, Au WH, Cheng V. Energy modelling of district cooling system for new urban development. Energy and Buildings, 36(11), 2004, 1153-1162.

Chan ALS, Chow TT, Fong SKF, Lin JZ. Performance evaluation of district cooling plant with ice storage. Energy - The International Journal, 31(14), 2006, 2414-2426.

Chan ALS, Hanby VI, Chow TT. Optimization of distribution piping network in district cooling system using genetic algorithm with local search. Energy Conversion and Management, 48(10), 2007, 2622-2629.

Conference papers:

Chow TT, Chan LS, Fong KF, Yau R, Au WH, Cheng V. District cooling system energy modeling methodology for new urban developments. Proceedings of IAQVEC 2001, the 4th International Conference on IAQ, Ventilation & Energy Conservation in Buildings, Changsha, China, Oct 2001, Vol.3, pp.1847-1855.

Chan ALS, Hanby VI, Chow TT. Application of genetic algorithm with local search in optimal piping network design of a district cooling system. Proceedings of IAQVEC 2007, the 6th International Conference on Indoor Air Quality, Ventilation & Energy Conservation in Buildings, Sendai, Japan, Oct 2007. (CD-ROM)

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