What is the size of the disc valve chosen for toilet ventilation if the volume of the room is 18 m3? (Take ACH =15)
Answers
The rule of thumb is that you need at least 1 CFM per square foot of room area. To determine the square footage of your bathroom, multiply the length times the width. For example, if your bathroom is 6 feet wide and 9 feet long, its square footage is 54. Therefore, it should have a fan rated for at least 54 CFM.
Explanation:
AIR CHANGES TABLE
Location Air Changes per hour
Bathroom (toilet only) 6 – 15
Bathroom with a shower 15 – 25
Bedroom 5 – 8
Cafe 15 – 25
Computer Room 6 – 10
Factory / Workshop 6 – 10
Garage 6 – 8
Commercial Kitchen 20 – 30
Domestic Kitchen 15 – 25
Laundry(No Dryer) 6 – 15
Laundry(With Dryer) 15 – 25
Commercial Laundry 11 – 20
Office 4 – 6
Domestic Roof Cavity 10
Sub Floor 6 – 10
Spa Bathroom 15 – 25
The calculator on this page is provided as a general guide, designed to help you select an exhaust fan which may be suitable for your needs.
By simply inputting into the calculator the dimensions of your room, and the type of room/application for the fan, the calculator will provide you with a suggested general capacity range in cubic metres per hour (m3/hr) to help narrow down your exhaust fan options.