Daikin VAM-FA8VE Technical Data Manual page 263

• HRV • VKM-GA(M)V1
Calculate air flow based on the required air flow per floor area
3
Required air flow (m /h)
= Required air flow per floor area (m
Required air flow per floor area (1m
Room
Office
Shop
Beauty salon
Amusement room
Smoking room
Small meeting room
Dining room (commercial)
Kinds of ventilation
Building, parking area in a building, boiler room,
electric room, machine room, galley, warehouse, etc.
Required air flow based on CO
CO is produced by human being's breathing, which means that the required air flow depends on the
2
number of persons staying therein and/or labor loads. To calculate air flow based on CO
the following equation.
100M
Q =
K-Ko
3
Q : Required air flow [m /h · person]
3 /h · person] → see Table A
M : CO production [m
2
K : CO concentration limit in normal status [%] see Table B
2
Ko : CO concentration in the atmosphere [%] (normally 0.03%)
2
Table A CO Production Depending on Labor Burdens
2
Energy metabolic rate :
Labor burden
RMR
0 Sitting quietly
0~1 Very light work
1~2 Light work
2~4 Medium work
4~7 Heavy work
Table B Required Air Flow Based on Labor Burdens
CO production Energy
2
for calculation metabolic rate
3
(m /h · person) for calculation
0.013 0
0.022 0.8
0.030 1.5
0.046 3.0
0.076 0.8
<Example>
Assumptions : CO production
2
CO concentration limit
2
100 × 0.030
Q = = 25m 3 /h · person
0.15 – 0.03
3
Therefore, air flow of 25 m /h · person is required.
• HRV • Heat Reclaim Ventilation
3 /m 2 · h) × Floor area (m
2
)
3
10m /h
3
15m /h
3
12m /h
3
15m /h
3
20m /h
3
25m /h
3
25m /h
Exhaust
Exhaust Mechanical ventilation
Supply Mechanical ventilation Supply
Room
Ventilation fan
Ventilation fan
Ventilation fan
production
2
CO production
2
3
(m /h · person)
0.0132
0.0132~0.0242
0.0242~0.0352
0.0352~0.0572
0.0572~0.0902
Labor burden
CO limit = 0.10% CO
2
Sitting quietly 18.6
Very light work 31.4
Light work 43.0
Medium work 65.7
Heavy work 106.0
0.03 m 3 /h · person (light work)
0.15 vol%
2 )
Air flow rate
10m
15m
12m
15m
20m
25m
25m
Exhaust
Natural ventilation
Supply Natural ventilation
Mechanical ventilation
Positive
Negative
pressure
pressure
Exhaust opening
Room
Room
Intake
Clean room, machine
cooling, etc
Kitchen, toilet, pantry, etc. in residential
housing, and copy room, etc.
production, use
2
CO production for calculation
2
3
(m /h · person)
0.013
0.022
0.030
0.046
0.074
3
Required air flow (m /h · person)
limit = 0.15% CO
2
10.8
18.3
25.0
38.3
61.7
2
3
/h
11
3
/h
3
/h
3
/h
3
/h
3
/h
3
/h
Mechanical ventilation
Ventilation fan
limit = 0.20%
2
7.6
12.9
17.6
27.1
43.7
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