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HCFC22 Liquid Line Pressure Drop/Velocity
At 45°F Evaporating Temperature and 125°F Condensing Temperature
30
25
20
15
10
9
8
7
6
5
4
3
2
1.5
1.0
.9
.8
.7
10 9 8 7
6
5
4
3
2
1.5
1.0 .9 .8 .7 .6
.5
.4
.3
.2
HCFC22 Liquid Line Pressure Drop (lbs./100 Feet)
COOLING CAP
ACITY
(
T
ONS)
30
25
20
15
10
9
8
7
6
5
4
3
2
1.5
1.0
.9
.8
.7
COOLING CAP
ACITY
(
T
ONS)
10 9 8 7
6
5
4
3
2
1.5
1.0 .9 .8 .7 .6
.5
.4
.3
.2
HCFC22 Liquid Line Pressure Drop (lbs./100 Feet)
NOTE − Shaded area represents unacceptable velocity range.
Figure 10
12.5
40
30
20
15
40
30
20
15
EXAMPLE:
10−TON UNIT
5/8 IN. O.D. LINE 4.25
PSIG DROP PER 100
FEET
275 FPM VELOCITY
To use this chart, first find the capacity (tons) on the left side of chart. To find the pipe size, proceed right to the smallest pipe
size. You can then determine the pressure drop (vertical at line) and velocity (diagonal lines) for the pipe size you selected.
For example, for (2) 7.5 ton units, select 5/8 in. O.D. line
.
