Calculate Size of Ventilation Fan
September 3, 2017 16 Comments
- Calculate Size of Ventilation Fan for Bathroom of 10 Foot Long,15 Foot width and 10 foot height .
Calculation:
- Area of the Room=Length x Width x Height
- Area of the Room=10 x 15 x 10 =1500 Cub. Foot
- From the table Air Changing Rate (ACH) for Bathroom = 8 Times/Hour.
- Size of Ventilation Fan = (Area of Room x ACH ) / 60
- Size of Ventilation Fan = (1500 x 8 ) / 60 = 200 CFM
-
Size of Ventilation Fan = 200 CFM
| Recommended Air Change Rates For Room (ACH) | ||
| Type of Room | Air Change Rate /Hour | Consider |
| Shower Area | 15 To 20 | 20 |
| Bathroom & Shower Rooms | 15 To 20 | 15 |
| Bathroom | 6 To 10 | 8 |
| Bedrooms | 2 To 4 | 4 |
| Halls & Landings | 4 To 6 | 5 |
| Kitchens | 10 To 20 | 15 |
| Living & Other Domestic Rooms | 4 To 6 | 5 |
| Toilets – Domestic | 6 To 10 | 8 |
| Utility Rooms | 15 To 20 | 15 |
| Cafés | 10 To 15 | 15 |
| Canteens | 8 To 12 | 10 |
| Cellars | 3 To 10 | 6 |
| Changing Rooms with Showers | 15 To 20 | 15 |
| Conference Rooms | 8 To 12 | 8 |
| Garages | 6 To 10 | 8 |
| Hairdressing Salons | 10 To 15 | 13 |
| Hospital Wards | 6 To 8 | 7 |
| Laundries & Launderettes | 10 To 15 | 13 |
| Meeting Rooms | 6 To 12 | 7 |
| Offices | 4 To 6 | 6 |
| Restaurants & Bars | 10 To 15 | 12 |
| School Rooms | 5 To 7 | 6 |
| Shops | 8 To 10 | 9 |
| Sports Facilities | 4 To 6 | 6 |
| Store Rooms | 3 To 6 | 5 |
| Workshops | 6 To 10 | 8 |
| Assembly rooms | 4 To 8 | 8 |
| Bakeries | 20 To 30 | 25 |
| Banks/Building Societies | 4 To 8 | 5 |
| Billiard Rooms * | 6 To 8 | 5 |
| Boiler Rooms | 15 To 30 | 25 |
| Canteens | 8 To 12 | 10 |
| Changing Rooms Main area | 6 To 10 | 8 |
| Changing Rooms Shower area | 15 To 20 | 17 |
| Churches | 1 To 3 | 3 |
| Cinemas and theatres * | 10 To 15 | 12 |
| Club rooms | 0.12 | 0.12 |
| Compressor rooms | 10 To 15 | 15 |
| Conference rooms | 8 To 12 | 12 |
| Dairies | 8 To 10 | 10 |
| Dance halls | 0.12 | 0.12 |
| Dental surgeries | 12 To 15 | 15 |
| Dye works | 20 – 30 | 30 |
| Electroplating shops | 10 To 12 | |
| Engine rooms | 15 To 30 | 30 |
| Entrance halls & corridors | 3 To 5 | 5 |
| Factories and workshops | 8 To 10 | 10 |
| Foundries | 15 To 30 | 20 |
| Glasshouses | 25 To 60 | 50 |
| Gymnasiums | 0.6 | 0.6 |
| Hospitals – Sterilizing | 15 To 25 | 20 |
| Kitchens – Domestic | 15 To 20 | 15 |
| Kitchens – Commercial | 0.3 | 0.3 |
| Laboratories | 6 To 15 | 12 |
| Lavatories | 6 To 15 | 12 |
| Lecture theatres | 5 To 8 | 8 |
| Libraries | 3 To 5 | 4 |
| Mushroom houses | 6 To 10 | 8 |
| Paint shops (not cellulose) | 10 To 20 | 15 |
| Photo & X-ray darkrooms | 10 To 15 | 12 |
| Public house bars | 0.12 | 0.12 |
| Recording control rooms | 15 To 25 | 20 |
| Recording studios | 10 To 12 | 10 |
| Shops and supermarkets | 8 To 15 | 12 |
| Squash courts | 0.04 | 0.04 |
| Swimming baths | 10 To 15 | 12 |
| Welding shops | 15 To 30 | 20 |
JIGNESH PARMAR
Very valuable information jignesbhai thanks for sharing.
Thank you for the list of
Calculate Size of Ventilation Fan. Is this recommendation for India? I suggest to specify the condition when all this recommendation will be valid. I think we should consider the location and varying weather condition for example.
Best regards,
tony
Thanks sir
than x alot On Sep 3, 2017 9:33 PM, “Electrical Notes & Articles” wrote:
> Jignesh.Parmar posted: ” Calculate Size of Ventilation Fan for Bathroom of > 10 Foot Long,15 Foot width and 10 foot height . Calculation: Area of the > Room=Length x Width x Height Area of the Room=10 x 15 x 10 =1500 Cub. Foot > From the table Air Changing Rate (ACH) ” >
Thank so much for such a helpful information sir.
Very good informative. We expect more
On 3 Sep 2017 22:03, “Electrical Notes & Articles” wrote:
> [image: Boxbe] This message is eligible > for Automatic Cleanup! (comment-reply@wordpress.com) Add cleanup rule > > | More info > > > Jignesh.Parmar posted: ” Calculate Size of Ventilation Fan for Bathroom of > 10 Foot Long,15 Foot width and 10 foot height . Calculation: Area of the > Room=Length x Width x Height Area of the Room=10 x 15 x 10 =1500 Cub. Foot > From the table Air Changing Rate (ACH) ” >
spl thanks , i need some electrical substation notes
Dear Jignesh,
Please replace word ‘area’ by ‘volume’
regards
keshav sharma
Dear Sir
Kindly send me or upload standard lux level tabulation sheet for various usage
Thanks & Best Regards
Abdul Kader
Sir plz teach about solar panel installation & battery, inverter finalization
tanks mr jignesh parmar. you are good man
very useful information. This essential information increase comfort level of house/offices.
dear sir, I want to bye all your electrical notes in PDF format but I can’t pay online amount can I pay your amount in cash on delivery.
Very informative. Please suggest how to select fan for electrical switchboard.
What is the basis for the above table recommendations and ranges ?
Kindly provide reference to any International standards or practices.
Thanks
sir ach how to calculate