1. The requirement of infrastructure construction is high: the centralized cooling system needs to build large-scale cooling stations, cooling towers, cooling pipe networks and other infrastructure, which requires a lot of investment and land resources.

2. High operating cost: the central cooling system needs large-scale energy supply and operation management, which has high operating cost and high requirements for human resources.

3. Technical problems: The centralized cooling system needs to realize centralized supply and remote distribution of heat energy, which involves many complicated technical problems, such as heat loss and pipeline maintenance.

4. Limited scope of application: Central cooling system is mainly suitable for large-scale commercial and residential areas, and it is difficult to realize centralized cooling in relatively small areas such as small houses and office buildings.

Although the central cooling system faces some challenges, with the improvement of environmental awareness and the expansion of city scale, the demand and potential of central cooling system are gradually increasing. Under the background of sustainable development, central cooling system may become an important way to supply cold and heat sources in cities in the future.