HVAC design of project 117 in Tianjing

Presents the vertical zoning of chilled water system, middle-pressure pipe design, stack effect of elevator shaft, and smoke control and exhaust system design. In this project, the working pressure of chilled water system exceeds 1.6 MPa and 2.5 MPa, and reaches 3.0 MPa, which proposes new requirement for strength calculation and stress calculation. For super high-rise building, the air density difference between indoor and outdoor results in stack effect of elevator shaft, which will make the elevator door on the ground floor unable to close. Briefly introduces the technical measures used in the building.