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Calculation method of outdoor unit capacity from capacity tables
Equation for outdoor unit capacity calculation: Y = (Y
NOTE: Refer to
"Cooling capacity table (Outdoor unit)"
using values of X
• Calculation example of 8 Ton outdoor units: AOU96RLAVL
Total rated
capacity of
indoor unit
105.6 (110%)
X
96.0 (100%)
X
Capacity ratio of indoor units to outdoor unit (%)
Capacity of outdoor units (kBtu/h)
Y = (110.4 - 100.4)/(110 - 100) × (102.1 - 100) + 100.4 = 102.5 kBtu/h
1-3. Capacity calculation method
y
(X , Y )
Capacity ratio of indoor units to outdoor unit, X (%)
and X
.
1
2
Cooling capacity at rated condition: 96 kBtu/h (8 ton)
Outdoor
temperature
68°FDB/59°FWB
°FDB
TC
IP
5
67.3
3.88
•
•
•
•
•
•
95
67.3
5.21
•
•
•
115
67.3
7.36
5
61.2
3.61
•
•
•
•
•
•
95
61.2
4.82
•
•
•
115
61.2
6.51
(X , Y )
(X, Y)
- Y
)/(X
- X
) × (X - X
2
1
2
1
on page 02-54 to find values of Y
Indoor temperature
80°FDB/67°FWB
82°FDB/68°FWB
TC
IP
TC
105.6
5.57
110.4
•
•
•
•
•
•
105.6
8.98
110.4
•
•
•
Y
79.8
8.35
80.7
96.0
5.15
100.4
•
•
•
•
•
•
96.0
7.74
100.4
•
•
•
Y
78.3
8.35
79.2
X
= 100
1
Y
= 100.4
1
- (02-11) -
x
) + Y
1
1
and Y
1
86°FDB/72°FWB
90°FDB/73°FWB
IP
TC
IP
TC
5.79
129.6
6.63
134.4
•
•
•
•
•
•
•
•
9.67
117.1
10.11
118.2
•
•
•
•
8.35
84.4
8.35
85.3
5.34
117.8
6.11
122.2
•
•
•
•
•
•
•
•
8.29
114.5
10.11
115.6
•
•
•
•
8.35
82.8
8.35
83.7
X
X = 102.1
2
Y
= 110.4
Y
2
1. Model selection and capacity calculation
2
IP
6.84
•
•
10.11
•
8.35
6.31
•
•
10.11
•
8.35
= 110
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