Fujitsu AUYG07LVLA Design & Technical Manual page 31

Fig 4
y
(X , Y )
1
1
Capacity ratio of indoor units to outdoor unit, X (%)
Outdoor
Indoor unit
temperature
connecting
16.0°C DB
DB WB
capacity (%)
TC
°C °C
-15.0 -16.0 11.4
-10.0 -11.0 14.5
-5.0 -7.0 15.6
0.0 -2.0 16.8
120
5.0 3.0 17.8
7.0 6.0 18.7
X
10.0 8.0 19.4
2
15.0 10.0 20.1
20.0 15.0 20.4
-15.0 -16.0 10.5
-10.0 -11.0 12.8
-5.0 -7.0 14.4
0.0 -2.0 15.7
100
5.0 3.0 17.0
7.0 6.0 18.5
X 10.0 8.0 18.6
1
15.0 10.0 18.8
20.0 15.0 19.0
Capacity ratio of indoor units to outdoor unit
Capacity of outdoor units (kW)
Y= (18.2-16.0) / (120-100)
(X
(X, Y)
Indoor temperature
18.0°C DB
IP TC IP
5.57 11.0 5.58
5.62 14.3 5.64
5.71 15.4 5.74
5.80 16.5 5.82
5.92 17.6 5.93
5.98 18.5 5.98
5.98 19.1 5.98
5.10 19.9 5.22
4.37 20.2 4.44
5.55 10.0 5.52
5.60 12.2 5.61
5.70 13.8 5.78
5.76 15.1 5.78
5.76 16.2 5.61
5.70 17.4 5.35
5.56 17.5 5.25
5.19 17.6 4.80
4.63 17.8 4.45
(120-100) +16.0 = 18.2 (kW)
- (02 - 12) -
i) .
and Y using X
2
ii) Calculate capacity of outdoor unit using
following equation:
, Y )
2
2
Y=(Y -Y ) / (X
2 1
x
20.0°C DB 24.0°C DB
TC IP TC IP
10.6 5.60 10.2 5.62
14.0 5.66 13.7 5.68
15.1 5.77 14.9 5.79
16.3 5.86 16.1 5.88
17.4 5.95 17.2 5.96
18.2 5.98 18.0 5.98
18.9 5.98 18.7 5.98
Y
2
19.6 5.45 19.4 5.84
20.1 4.73 19.9 5.05
9.6 5.50 9.2 5.48
11.8 5.62 11.3 5.64
13.3 5.75 12.9 5.72
14.5 5.74 13.8 5.68
15.0 5.23 14.0 4.92
16.0 5.07 14.5 4.55
16.2 4.80 14.7 4.53
Y
16.4 1 4.61 15.0 4.33
16.7 4.36 15.4 4.08
X1 = 100 % X = 120 %
Y1 = 16.0
n
1
and X .
1 2
-X ) (X-X1) + Y
2 1 1
X2 = 120 %
Y Y2 = 18.2
2. MODEL SELECTION