Airwell YEVFD Series, Service Manual

Page: 19 / 92

8. Performance Curves
(1) Calculation method of cooling capacity
----cooling capacity to be known = cooling capacity*(A*B*C*D*E) W
E. Capacity compensation value of pipe
length, pipe diameter and height drop
C. Capacity modification value under
airflow ariation rate of indoor unit group
(only for duct unit)
A. Capacity compensation value of indoor
air wet-bulb temperature condition
B. Capacity compensation value of outdoor
air dry-bulb temperature condition
D. Capacity compensation suitable for
total capability of indoor unit group
1.2
1.1
1.0
0.9
0.8
15 20 24
Indoor air wet-bulb temperature (°C )
Capacity
modification
value
1.2
1.1
1.0
0.9
Outdoor air dry-bulb temperature (°C )
Capacity
modification
value
-5 20 0 25 5 30 10 35 15 40 43
1.1
1.0
0.9
80 90 100 110 120
Airflow variation rate (%)
Capacity
modification
value
120
100
100 120 130
80
60
40
20
20 40 60 80
0
Total capacity of indoor unit group (%)
Standard capacity
Capacity
modification
value
0.9
1.0
0.8
0.7
0.6
0 20 40 60 80 100 120 140 160 175
Liquid pipe: 9.52
Gas pipe: 19.05
12.7 Liquid pipe :
Gas pipe
：
22.22
0.9
1.0
0.8
0.7
0.6
0 20 40 60 80 100 120 140 160 175
Liquid pipe: 9.52
Gas pipe: 22.22
12.7
Liquid pipe
:
Gas pipe
：
25.4
0.9
1.0
0.8
0.7
0.6
0 20 40 60 80 100 120 140 160 175
Liquid pipe: 12.7
Gas pipe: 25.4
15.88 Liquid pipe :
Gas pipe
：
28.58
AW-YEVFD220-H16
AW-YEVFD280-H16
AW-YEVFD335-H16
17