75
Performance Data ACK-E-2009
Details:
1
st
Step:
To obtain the Total capacity and Sensible capacity for
(a) Indoor Condition: 24°C DB, 15°C WB
Outdoor Condition: 35°C DB
Indoor DB˚C Indoor WB˚C
Outdoor DB, ˚C
35
TC (kW) SC (kW)
........
........
24
15
...........................................
x
1
y
1
16 5.419 3.94
17 5.495 3.71
Total capacity, TC
⇒ x
1
= 5.343kW (Same as Total capacity at 20°C Indoor DB / 15°C Indoor WB & 35°C Outdoor WB)*
Sensible capacity, SC
Extrapolation Method:
⇒
17º C – 15º C
=
3.71kW – y
1
17º C – 16º C 3.71kW – 3.94kW
⇒ y
1
= 4.17kW
(b) Indoor Condition: 24°C DB, 15°C WB
Outdoor Condition: 40°C DB
Indoor DB˚C Indoor WB˚C
Outdoor DB, ˚C
40
TC (kW) SC (kW)
........
........
24
15
...........................................
x
2
y
2
16 4.944 3.592
17 5.06 3.463
Total capacity, TC
⇒ x
2
= 4.828kW (Same as Total capacity at 20°C Indoor DB / 15°C Indoor WB & 40°C Outdoor WB)*
Sensible capacity, SC
Extrapolation Method:
⇒
17º C – 15º C
=
3.463kW – y
2
17º C – 16º C 3.463kW – 3.592kW
⇒ y
2
= 3.721kW
* This is due to 2 different conditions with same WB temperature, will have the same level of enthalpy. For more
details, please refer to psychrometrics chart
08_Performance Data_A.indd 7508_Performance Data_A.indd 75 4/6/2009 11:14:02 AM4/6/2009 11:14:02 AM
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