Balanced Ventilation Systems | 合法醫療器材資訊網

2013年9月12日—Abalancedventilationsystem(asopposedtosupply-onlyorexhaust-onlysystem​)hastwofans:onebringingoutsideairintothebuilding,and ...

All buildings require controlled mechanical ventilation, or the controlled, purposeful introduction of outdoor air to the conditioned space. Building intentionally leaky buildings and installing operable windows does not provide sufficient outside air in a consistent manner throughout the year.

Building enclosures must be “built tight and then ventilated right.” Why? Because before you can control air you must enclose it. Once you eliminate big holes it becomes easy to control air exchange between the inside and the outside.

With a tight building enclosure, both mechanical ventilation and pollutant source control are required to ensure that there is reasonable indoor air quality inside the house. These approaches are shown schematically in the following figures.