Daikin FTXS-A Series Technical Manual page 19

(b) Indoor Condition: 25°C DB, 19°C WB
Outdoor Condition: 35°C DB
EWB EDB
24
19 25
27
Repeat the same process for (c) & (d) in 1
(c) x = 2.17 kW; y = 2.17 kW; z
3 3
2 Step:
nd
To obtain the TC, SC & PI for
(a) Indoor Condition: 25°C DB, 17°C WB
Outdoor Condition: 35°C DB
EWB EDB
16
17 25
19
Repeat the same process for (b) in 2
(c) x = 2.22 kW; y = 2.05 kW; z
6 6
3 Step:
rd
To obtain the TC, SC & PI for
(a) Indoor Condition: 25°C DB, 17°C WB
Outdoor Condition: 37°C DB
EWB EDB
25 17
By Interpolation Method
37°C – 35°C
⇒
=
40°C – 35°C
⇒ x = 2.34 kW
Outdoor temperature
35°C
TC SC PI
2.55 1.82 0.69
x y z
2 2 2
2.56 2.12 0.69
Step
st
= 0.69 kW
3
Outdoor temperature
35°C
TC SC PI
2.35 2.35 0.68
x y z
5 5 5
2.55 1.92 0.69
Step
nd
= 0.71 kW
6
Outdoor temperature
35°C
TC SC PI
2.42 2.21 0.68
x – 2.42 kW
2.22 kW – 2.42 kW
By Interpolation Method
25°C – 24°C
⇒
27°C – 24°C
⇒ y = 1.92 kW
2
Similarly,
x = 2.55 kW
2
z = 0.69 kW
2
(d) x = 2.34 W; y
4
By Interpolation Method
17°C – 16°C
⇒
19°C – 16°C
⇒ x = 2.42 kW
5
Similarly,
y = 2.21 kW
5
z = 0.68 kW
5
37°C
TC SC PI
x y z
Similarly,
y = 2.15 kW
z = 0.69 kW
Performance Data
y – 1.82 kW
2
=
2.12 kW – 1.82 kW
= 1.80 kW; z
4 4
x – 2.35 kW
5
=
2.55 kW – 2.35 kW
40°C
TC SC PI
2.22 2.05 0.71
= 0.75 kW
15