Air conditioning system design for Beijing Fukai Building

Presents the main design conditions, air distribution mode, smoke control and exhaust system and automatic control system, etc. Summarizes the design experience. The office rooms apply fan-coil unit plus fresh air system; the large spaces apply double-fan all-air system. The building is divides into inner and peripheral zones. The inner zone is supplied with chilled water of 7 ℃/12 ℃ all the year by water chillers in transition seasons and summer and by cooling tower in winter. The peripheral zone is supplied with hot water of 60 ℃/50 ℃ in winter which is obtained from exchanging with the municipal heat supply network by plane heat exchangers. Water system uses zoning two-pipe system. Both chilled water pumps and cooling water pumps are operated with variable frequency.