Haier CA0065EANR, Инструкция по установке и эксплуатации

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17
conditioning part load operation;

Energy-saving technical measures should be adopted as much as possible in the design of
air-conditioning piping systems;

The pipe and fittings used in the piping system should meet the local requirements;

Pay attention to the maintenance and management of the piping system design, easy to operate and
adjust.
Determination of pipe diameter of air conditioning water system
The pipe diameter d is determined by the following formula:
d = √
4m
w
3.14v
In the middle
：
m
w
------Water flow
m
3
s
⁄
v
--------Water flow rate
m s
⁄
We recommend that the water flow rate in the water system be selected according to the recommended
values in Table 1. The pipe diameter is determined by trial calculation, or the pipe diameter is
determined according to the flow according to Table 2.
Table 1. Recommended water flow rate in the pipe (m/s)
Pipe diameter
（
mm
）
12 20 25 32 40 50 65 80
Closed water
system
0.4-0.5 0.5-0.6 0.6-0.7 0.7-0.9 0.8-1.0 0.9-1.2 1.1-1.4 1.2-1.6
Open water system 0.3-0.4 0.4-0.5 0.5-0.6 0.6-0.8 0.7-0.9 0.9-1.0 0.9-1.2 1.1-1.4
Pipe diameter
（
mm
）
100 125 150 200 250 300 350 400
Closed water
system
1.3-1.8 1.5-2.0 1.6-2.2 1.8-2.5 1.8-2.6 1.9-2.9 1.6-2.5 1.8-2.6
Open water system 1.2-1.6 1.4-1.8 1.5-2.0 1.6-2.3 1.7-2.4 1.7-2.4 1.6-2.1 1.8-2.3
Table 2. Pipe diameter and unit length resistance loss of water system
Steel pipe diameter
（
mm
）
Closed water system Open water system
flow
（
m3/h
）
kPa/100m flow
（
m3/h
）
kPa/100m
15
0
～
0.5 0
～
60
-- --
20
0.5
～
1.0 10
～
60
-- --
25 1
～
2 10
～
60 0
～
1.3 0
～
43
32 2
～
4 10
～
60 1.3
～
2.0 11
～
40
40 4
～
6 10
～
60 2
～
4 10
～
40
50 6
～
11 10
～
60 4
～
8 --
65 11
～
18 10
～
60 8
～
14 --
80 18
～
32 10
～
60 14
～
22 --
100 32
～
65 10
～
60 22
～
45 --
125 65
～
115 10
～
60 45
～
82 10
～
40
150 115
～
185 10
～
47 82
～
130 10
～
43
Note: The parameters in the above table will change with the update of the design manual. For details,
please refer to the HVAC System Design Manual.