Daikin VAM-FA8VE Technical Data Manual page 262

11.2.5 Required Air Flow
2
11
260
• HRV • VKM-GA(M)V1
When calculating the required air flow (ventilating capacity), various factors, including CO
the persons staying therein and production of combustion gases, should be considered. Calculations
should consider all of the requirements that the room should meet.
Calculate air flow based on the occupied area per person
20 × room floor area (m
Required air flow (m 3 /h) =
Occupied area per person (m
Note 1) The number 20 contained in the above equation means 20 m
fresh air) has been determined based on the CO
quietly. If he is smoking, additional air flow is required.
Note 2) In the case that the actual occupied area per person exceeds 10 m
denominator of the equation.
Occupied area per person for ventilation requirements for commercial facilities
Building type
Restaurant, coffee shop
Cabaret, beer hall
Japanese restaurant, assembly room on hire
Shop, supermarket
Billiard room, table tennis room, dance hall, bowling alley
Pachinko parlor, go club, mah-jongg saloon
Japanese style hotel, Hotel, motel
Special bath house
Meeting room, city hall
Office
Calculate air flow based on the required number of air changes
Required air flow (m 3 /h)
= Required number of air changes (times/h) × Room volume (m
•
The required number of air changes shown below has been determined based on the prior knowledge
and experiments by sanitary testing laboratories etc.
(Example) Place : ordinary living room
Required number of air changes : 6 (times/h) (see the table below)
Area of the room : about 9.9 m
Ceiling height : 2.4 m
Required air flow = 6 × 9.9 × 2.4 = 143 (m
Select ventilating fans that can satisfy the above mentioned airflow requirement.
Guideline for the number of air changes
Room
Toilet, washroom
Locker room, changing room
Library, warehouse, store
Darkroom
Copy room, print room
Projection room
Pantry
Shower room
Bathroom
Changing room
Food locker
Garbage locker
Calculate air flow based on the room capacity (number of persons to be admitted)
Required air flow (m 3 /h) = Required air flow per person (m
Required air flow per person
Room
Recommendation
Bar, cabaret 51m
Office, restaurant 25.5m
Shop, department store 25.5m
• HRV • Heat Reclaim Ventilation
2 )
2
)
production of a male adult when he is sitting
2
Occupied area
per person (N)
3m
2m
3m
3m
2m
2m
10m
5m
0.5~1m
5m
2
3
/h)
Number of air changes (times/h)
5~15
5
5
10
10
10
8
5
5
5
5
15
3 /h) × Number of persons
Required air flow
Minimum
3 3
/person · h 42.5m /person · h
3 3
/person · h 17~20m /person · h
3 3
/person · h 17m /person · h
production by
2
3
/h · person. This value (required
2
, use 10 as the value of the
Remarks
2
Floor area for business use
2
Floor area for business use
2
Floor area for business use
2
Floor area for business use
2
Floor area for business use
2
Floor area for business use
2
Floor area for business use
2
Floor area for business use
2
Per area number of person
2
Floor area of the office room
3
)