Daikin FTXS-A Series - Page 19

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