1-17
4–1
4–2
Load (kW)
8
6
4
2
0
0
8
12
16
20
Hour
Load (kW)
8
6
4
2
0
0
8
12
16
20
Hour
4–3
Load (kW)
8
6
4
2
0
0
8
12
16
20
Hour
4–4
Load (kW)
8
6
4
2
0
0
8
12
16
20
Hour
4–5
Load (kW)
8
6
4
2
0
0
8
12
16
20
Hour
Total Load (kW)
22
20
18
16
14
12
10
8
6
4
2
0
0
8
12
16
20
Hour
Example: Equipment selection based on system load profile
Since the five rooms on the 4th floor face different directions, their hourly cooling load profile will be also
different.
We select each indoor unit based on the individual room peak load. However, we need to use the total load
profile on the 4th floor as a base to choose the outdoor module.
• Load in each room
• Total load in all rooms of 4th floor
1. The total load on the 4th floor is calcu-
lated by adding the hourly cooling loads
of the five rooms.
2. The maximum value of total load is used
to select outdoor module.
