Daikin FCRN - Page 24

20
Performance Data
(b) Indoor Condition: 25°C DB, 16°C WB
Outdoor Condition: 35°C DB
EWB EDB
Outdoor temperature
35°C
TC SC PI
19
24 5.23 3.92 1.84
25
x
2
y
2
z
2
27 5.25 4.57 1.84
By Interpolation Method
⇒
25°C – 24°C
=
x
2
– 5.23kW
27°C – 24°C 5.25kW – 5.23kW
⇒ x
2
= 5.24kW
Similarly,
y
2
= 4.14kW
z
2
= 1.84kW
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
4.83 4.83 1.82
17
x
5
y
5
z
5
19 5.24 4.14 1.84
By Interpolation Method
⇒
17°C – 16°C
=
x
5
– 4.83kW
19°C – 16°C 5.24kW – 4.83kW
⇒ x
3
= 4.97kW
Similarly,
y
3
= 4.6kW
z
3
= 1.83kW
Repeat the same process for (b) in 2
nd
Step
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 4.97 4.6 1.83 x y z 4.54 4.54 1.95
By Interpolation Method
⇒
37°C – 35°C
=
x – 4.97kW
40°C – 35°C 4.54kW – 4.97kW
⇒ x = 4.8kW
Similarly,
y = 4.58kW
z = 1.88kW