Daikin VRV III, Руководство пользователя, Страница: 47 / 455

Features ED34-862
42 General Information
„
Selection Procedures (in Japan)
Various methods are used to calculate the required ventilating air flow rate according to CO
2
generated by
inhabitants in a room, waste gas generated by use of fire, and other conditions of a room.
Here are 2 patterns of calculating methods.
Based on inhabitants
A : 20
×
Living room floor space (m
2
)
B : Area occupied per person (m
2
)
The above equation conforms to article 20, 2
No.2 of the Building Standards Act in Japan.
Note :
1. 20 (in the above equation) means “20(m
3
/ h / person)”, which is the required ventilating air flow rate based
on the CO
2
exhausted by an adult sitting still in a room. If smoking is allowed, other calculation method
should be used.
2. Use 10 (m
2
) if the area occupied per person exceeds 10 (m
2
).
<Table 1>
* : Values set by the Metropolitan Maintenance Bureau in Japan.
Note :
1. Table indicates the required ventilating air flow rate calculated as 20 m
3
/ h.
2. The area occupied per person by type of business is calculated in reference to Application Standards for
building administration in compliance with Building Standards Act in Japan.
Based on Room size
C : Number of ventilation required per hour (ventilation / h)
D : Area of room (m
2
)
E : Height of Ceiling (m)
Calculation is based on the experiences of hygienic laboratory, etc. to find out the number of hourly ventilation of the
room air.
(Selection example)
Place : Living room of common household
Required ventilation : 6 times / h (See Table 2)
Area of room : Approx. 30 (m
2
)
Height of ceiling : 2.4 m
Required ventilating air flow rate = 6
×
30
×
2.4
Required ventilating air flow rate and the unit size 500 is almost equal.
So select the close size of the unit.
In this case, select VKM500GMV1.
Type of building
Area occupied per
person (N)
Remarks
Dining houses, restaurants, coffee-shops 3 m
2
Floor space of a part used for business purposes.
Cabarets, beer halls 2 m
2
Floor space of a part used for business purposes.
Japanese-style restaurants, hall for hire 3 m
2
Floor space of a part used for business purposes.
Store market 3 m
2
Floor space of a part used for business purposes.
Pool rooms, Ping-pong rooms, dance halls,
bowling alleys
2 m
2
Floor space of a part used for business purposes.
Pin-ball parlors, Go club houses, mahjong
parlors
2 m
2
Floor space of a part used for business purposes.
Inns, hotels, and motels 10 m
2
Floor space of a part used for business purposes.
Massage parlors 5 m
2
Floor space of a part used for business purposes.
Meeting places, public halls 0.5 – 1 m
2
Persons accommodated simultaneously with the
number of persons calculated per unit.
Offices 5 m
2
Floor space of an office.
Required ventilating
air flow rate (m
3
/ h)
20
×
A
B
=
Required ventilating
air flow rate (m
3
/ h)
C
×
D
×
E
=
432 (m
3
/ h) =
.
.
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