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At 45°F Evaporating Temperature and 125°F Condensing Temperature
40
30
20
15
30
25
20
15
12.5
10
9
8
7
6
5
4
3
2
1.5
1.0
.9
.8
.7
40
30
20
15
To use this chart, first find capacity (tons) on left side of chart. To find pipe size, proceed right to smallest pipe size. Pressure drop (vertical line)
and velocity (diagonal lines) can then be determined for the pipe size selected. For example, for 10 ton unit, select 5/8 in. O.D. line.
NOTE - Shaded area denotes unacceptable velocity range.
HCFC 22 LIQUID LINE PRESSURE DROP/VELOCITY
HCFC 22 LIQUID LINE PRESSURE DROP (lbs./100 Feet)
10 9 8 7
6
5
4
3
EXAMPLE:
10 TON UNIT
5/8 IN. O.D. LINE 4.25
PSI DROP PER 100
FEET
275 FPM VELOCITY
10 9 8 7
6
5
4
3
HCFC 22 LIQUID LINE PRESSURE DROP (lbs./100 Feet)
FIGURE 10
Page 11
2
1.5
1.0 .9 .8 .7 .6
2
1.5
1.0 .9 .8 .7 .6
.5
.4
.3
.2
30
25
20
15
10
9
8
7
6
5
4
3
2
1.5
1.0
.9
.8
.7
.5
.4
.3
.2
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