72
REYQ-TATJA / TAYDA
EDUS371704C-D
22.1.2 Selection Example
The following is a selection example based on total heat load for cooling.
Room A
Room H
Room G
Room F
Room B
Room E
Room C
Room D
Floor plan
[1] Given conditions
-Design conditions
Indoor air temperature: 67°FWB / 75°FDB, Outdoor air temperature: 93°FDB
-Determine peak load of each room (and system peak load if necessary)
-Required heat load of each room
Time
Room A
Room B
Room C
Room D
Room E
Room F
Room G
Room H
Total
9:00
16.4
16.5
10.4
10.4
30.9
30.8
10.0
10.0
135.4
12:00
22.4
24.4
17.3
17.3
25.1
23.2
13.7
13.7
157.1
14:00
30.7
32.2
16.8
16.8
24.9
23.4
14.2
14.2
173.2
16:00
36.1
36.4
13.3
13.3
21.5
21.2
13.0
13.0
167.8
Total heat load (MBH)
From the above heat load calculation, the maximum heat load for the system (system peak load) is 173.2 MBH.
Level difference
120 ft.
Select
VRV
indoor units FXMQ-PB series for each room.
Equivalent pipe length 200 ft.
-Safety factor
In this example, safety factor is not used. (i. e., safety factor = 1.0)
[2] Selection of indoor units
Calculate total heat capacity of indoor units corrected for indoor air temperature.
In case design temperature of the indoor air falls between temperatures listed in the table, calculate the capacity by interpolation.
The corrected total heat capacity of indoor units shall satisfy the maximum heat load of each room.
Содержание VRV IV REYQ120TATJA
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