7. OUTDOOR AIR INTAKE AMOUNT & STATIC PRESSURE
26
MEE16K008_U
PLFY-P08, 12, 15, 18, 24, 30NEMU-E
PLFY-P36, 48NEMU-E
Multifunction ca High efficiency filter
Multifunction ca Standard filter
Multifunction ca Standard filter
Taking air into the unit
Multifunction ca High efficiency filter
Taking air into the unit
Q
0
B
A
C
1
Curve in the
graphs.
Duct characteristics
at site
Q
A
EC
2
Q
Qa
A
D
3
Q…Designed amount of fresh air intake
<CMM (CFM)>
A…Static pressure loss of fresh air
intake duct system with air flow
amount Q <Pa (in.W.G.×10
-2
)>
B…Forced static pressure at air condi-
tioner inlet with air flow amount Q
<Pa (in.W.G.×10
-2
)>
C…Static pressure of booster fan with
air flow amount Q <Pa (in.W.G.×10
-
2
)>
D…Static pressure loss increase amount
of fresh air intake duct system for air
flow amount Q <Pa (in.W.G.×10
-2
)>
E…Static pressure of indoor unit with air
flow amount Q <Pa (in.W.G.×10
-2
)>
Qa…Estimated amount of fresh air
intake without D <CMM (CFM)>
How to read curves
-200(-80)
-150(-60)
-100(-40)
-50(-20)
0
50(20)
0
1
2
50
100
150
200 [CFM]
3
4
5
6[CMM]
2 - inlet
1 - inlet
Air flow rate
Static pressure [Pa(in.W.G.×10
-2
)]
-200(-80)
-150(-60)
-100(-40)
-50(-20)
0
50(20)
0
1
2
50
100
150
200 [CFM]
3
4
5
6[CMM]
Static pressure [Pa(in.W.G.×10
-2
)]
-200(-80)
-150(-60)
-100(-40)
-50(-20)
0
50(20)
0
1
2
50
100
150
200 [CFM]
3
4
5
6[CMM]
Air flow rate
Static pressure [Pa(in.W.G.×10
-2
)]
1 - inlet
2 - inlet
2 - inlet
1 - inlet
2 - inlet
1 - inlet
-200(-80)
-150(-60)
-100(-40)
-50(-20)
0
50(20)
0
2
50
100
150
200
250
[CFM]
4
8 [CMM]
6
Air flow rate
Static pressure [Pa(in.W.G.×10
-2
)]
-200(-80)
-150(-60)
-100(-40)
-50(-20)
0
0
50(20)
0
2
50
100
150
200
250
[CFM]
4
8 [CMM]
6
Air flow rate
Static pressure [Pa(in.W.G.×10
-2
)]
-200(-80)
-150(-60)
-100(-40)
-50(-20)
50(20)
0
2
50
100
150
200
250
[CFM]
4
8 [CMM]
6
Air flow rate
Static pressure [Pa(in.W.G.×10
-2
)]
0000004082.BOOK 26 ページ ２０１６年９月８日 木曜日 午後２時４３分
