Fujitsu AIRSTAGE J-IIIL Design & Technical Manual page 28

¢ Calculation example
 Example 1
Indoor temperature
82°FDB/68°FWB
(27.8°CDB/20°CWB)
• Selection of indoor unit
No Item
A-1 Cooling heat load
Indoor unit models
A-2
(Example: AU)
A-3 (TCin)r
A-4 (TCin)d
Compensation coefficient of
A-5
pipe length
A-6 (TCin)e
A-7 ∑(TCin)r
A-8 ∑(TCin)d
1-3. Capacity calculation method
Design conditions
Outdoor temperature
95°FDB
(35°CDB)
Outdoor
unit
Pipe length (L) = 246 ft (75 m)
Indoor Indoor
unit 1 unit 2
Room 1 Room 2
Room
1 2
kBtu/h 20.4 20.4
AUUB AUUB AUUB
24 24
kBtu/h 24.0 24.0
kBtu/h 25.1 25.1
kBtu/h 22.6 22.6
kBtu/h
kBtu/h
- (02-6) -
Pipe length
246 ft
(75 m)
Indoor Indoor
unit 3 unit 4
Room 3 Room 4
3 4 5
20.4 6.8 5.1
AUUA AUUA
24 9 7
Refer to "Indoor units" of
24.0 9.5 7.5
25.1 9.9 7.8
Refer to
0.9
22.6 8.9 7.0
89.0
93.0
Height difference
65 ft (20 m)
Outdoor unit higher side
Indoor
unit 5
Room 5
Remark
"Outdoor
unit and indoor unit lineup"
Chapter 1. GENERAL
INFORMATION on page 01-1.
Refer to "Cooling capacity table
(Indoor unit)" on page 02-14.
"Capacity compensation
coefficient" on page 02-13.
(A-4) × (A-5)
Sum of A-3
Sum of A-4
1. Model selection and capacity calculation
in