Chengdu hall hits Near Zero
CSCEC's Hall No. 3 in Chengdu just earned Near Zero Energy certification—achieved with natural ventilation, heat pumps and rooftop photovoltaics (x.com). The build is being showcased as a practical tech mix (passive + active systems) that scales in large civic projects (x.com).
The hall uses a single‑layer curved lattice shell with a maximum span of 94 meters and a steel‑frame structure described by the developer as a “diamond” on the island’s western lakeside. (en.cscec.com) CSCEC reports an overall energy‑saving rate of 69.95% and a renewable‑energy utilization rate of 75.55%, with the project claiming zero direct carbon emissions. (en.cscec.com) Building‑integrated photovoltaic (BIPV) glass covers the dome and is expected to produce about 140,000 kWh of electricity annually. (en.cscec.com) Mechanical and indoor systems listed for the hall include ground‑source heat pumps, high‑efficiency HVAC, energy‑saving lighting and elevators, and fresh‑air heat‑recovery units. (en.cscec.com) The envelope strategy combines skylights, enhanced roof insulation and triple‑pane, double‑chamber, double‑silver argon‑filled glass to boost daylighting and natural ventilation while reducing heat gain. (en.cscec.com) CSCEC notes the project was picked as a green and low‑carbon best practice case by China’s Ministry of Ecology and Environment in 2023, and the reported 69.95% energy reduction falls within China’s near‑zero target band of roughly 60–75% reduction used in national standards for nearly zero energy buildings. (en.cscec.com)
