Contrastive analysis of key technologies between ASHRAE Standard 170-2021 and Chinese standards

This paper summarizes the key ventilation design technologies in ASHRAE Standard 170-2021 from the aspects of air change rate, air filtration, pressure relationship to adjacent areas, recirculating room unit, outdoor exhaust outlet, energy recovery, air humidification, unoccupied turndown operating condition, etc., compares and analyses them with those in Chinese national standards, and concludes some applicable ventilation design technologies and methods.