Daikin F-Series - Page 27

25
Performance Data
Details of Calculation:
1
st
Step:
To obtain the TC, SC & PI for
(a) Indoor Condition: 25°C DB, 16°C WB
Outdoor Condition: 35°C DB
EWB EDB
Outdoor temperature
35°C
TC SC PI
16
24 1.80 1.71 0.63
25
x
1
y
1
z
1
27 1.83 1.83 0.63
By Interpolation Method
⇒
25°C – 24°C
=
x
1
– 1.80kW
27°C – 24°C 1.83kW – 1.80kW
⇒ x
1
= 1.81kW
Similarly,
y
1
= 1.75kW
z
1
= 0.63kW
(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 1.99 1.32 0.64
25
x
2
y
2
z
2
27 1.99 1.53 0.64
By Interpolation Method
⇒
25°C – 24°C
=
x
2
– 1.99kW
27°C – 24°C 1.99kW – 1.99kW
⇒ x
2
= 1.99kW
Similarly,
y
2
= 1.39kW
z
2
= 0.64kW
Repeat the same process for (c) & (d) in 1
st
Step
(c) x
3
= 1.69 kW; y
3
= 1.63 kW; z
3
= 0.68 kW
(d) x
4
= 1.83 W; y
4
= 1.30 kW; z
4
= 0.69 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
1.81 1.75 0.63
17
x
5
y
5
z
5
19 1.99 1.39 0.64
By Interpolation Method
⇒
17°C – 16°C
=
x
5
– 1.81kW
19°C – 16°C 1.99kW – 1.81kW
⇒ x
5
= 1.87kW
Similarly,
y
5
= 1.63kW
z
5
=0.63kW
Repeat the same process for (b) in 2
nd
Step
(c) x
6
= 1.74 kW; y
6
= 1.52 kW; z
6
= 0.68 kW