1. Ventilation rate of air conditioner

Although more air exchange is better, it will lead to an increase in equipment size, which will create a huge financial burden, especially when dealing with external atmospheres and heating or cooling. Therefore, the amount of air exchange should be limited to the minimum required amount. There was a significant relationship between air exchange rate and smoking in the absence of job contamination and only worker contamination. If the amount of smoked is less than the amount of smoked per hour or "occasional smoking" level, the air exchange rate is 10-15m? /(h··(H·), slightly more is 20-25m³/(h·(H·). For entertainment and party places where each person smokes more than 2 cigarettes per hour, the minimum required air rate is 40-50m³/(H··(H·person)), and the appropriate air rate is about 1.5 times. Usually, the standard is 35m³/(H·person).

2. Advice on various situations

When the indoor occupants are unsure, obtain the air exchange rate per square meter of floor area [m sand/(h·(h·(h·(H·)))) from the table below:

room type	Ventilation rate (M³/h·㎡)
residential room	8
office	10
Duty room	12
exhibition room	12
dressing room	12
small shop	15
studio	15
entertainment lounge	15
smoking room	20
small meeting room	25
Commercial canteen	25
Business kitchen	60
kitchen table	25
Non-corporate canteen	20
Non-commercial kitchen	35
hot water room	15
locker room	10
public bathroom	20
family bathroom	20
public restroom	30
family toilet	20
bathroom	10
screening room	20
Dust smell room	30

gas chamber 35 photography darkroom 20 Mechanical and electrical room 10