Wang, G.; Zhu, Y.
Bibliographic info:
The 6th International Conference on Indoor Air Quality, Ventilation & Energy Conservation in Buildings IAQVEC 2007, Oct. 28 - 31 2007, Sendai, Japan

This paper aims at pointing out that how a District Cooling system can be a more energy efficientsolution compared with a decentralized cooling solution. In order to give a fair comparison, the authorapplies equivalent electric power coefficient of performance. This comparison approach will beinstructive for designing an energy efficient cooling solution in China.Firstly, the paper gives the definition, components and possible energy source of a District CoolingSystem. Secondly, the author points out the theoretical advantages and practical problems of thissolution for cooling of the built environment. Thirdly, the paper analyses several key factors in severalDCS cases, including free cooling possibility, cooling load density and stability, cold water supply andreturn temperature difference in the transportation and distribution network through several casestudies. Finally the author points out the key difference between District Cooling and District Heatingand concludes that like decentralized cooling solution, District Cooling is just a cooling solution and onlyunder very specific circumstance this solution can be considered and being competitive in terms ofenergy efficiency with decentralized cooling solution.