通风换气次数 air change rate
[矿业] ventilation rate
- 夏季尽可能增加换气次数,特别是进行夜间通风、换气次数在每小时6-9次,可明显改善室内热环境。
summer maximize ventilation frequency, especially for night ventilation, ventilation frequency in the 6-9 times per hour, could markedly improve indoor thermal environment. - 这些可以包括等级分类,如ISO7级、室内压力、过滤器数量、室内换气次数、照明、采暖、通风与空调系统等等。
These may include class level such as ISO Class 7, amount of room pressure, how many filters, amount of room air changes, lighting, HVAC needs, etc.