MASTERING NATURAL VENTILATION 5 CRUCIAL LESSONS FROM DESIGN EXPERTS

摘要

When the 456-meter-tall Kunming Junta Dongfeng Square tower opens in Kunming City, China, in mid-2017, it will stand as one of the world's tallest naturally ventilated buildings. Roughly three-quarters of the tower's 100 floors-the entire office portion of the mixed-use program-will be conditioned, at least partially, through buoyancy-driven natural ventilation. Using the basic principles of stack effect-the movement of air in and out of buildings based on air buoyancy-cool air will be drawn through the fagade and fun-neled into the open-plan offices, through the ceiling plenum, and into a series of six-story "eco-chimneys," where it will be exhausted. By utilizing the region's temperate climate for "free" cooling and ventilation (no mechanical fans are required to move the air), the design team, led by Skidmore, Owings & Merrill, expects to slash the building's overall energy use by at least 13%.