Heatcraft Refrigeration Products Condensing Units H-IM-CU User Manual
Page 11
11
Table . Pressure Loss of Liquid Refrigerants in Liquid Line Risers (Expressed in Pressure Drop, PSIG, and Subcooling Loss, ˚F)
Refrigerant
Liquid Line Rise in Feet
10'
15'
20'
25'
0'
0'
50'
75'
100'
PSIG
˚F
PSIG
˚F
PSIG
˚F
PSIG
˚F
PSIG
˚F
PSIG
˚F
PSIG
˚F
PSIG
˚F
PSIG
˚F
R22
4.8
1.6
7.3
2.3
9.7
3.1
12.1
3.8
14.5
4.7
19.4
6.2
24.2
8.0
36.3
12.1
48.4
16.5
R507, R404A
4.1
1.1
6.1
1.6
8.2
2.1
10.2
2.7
12.2
3.3
16.3
4.1
20.4
5.6
30.6
8.3
40.8
11.8
Based on 110˚F liquid temperature at bottom of riser.
Table 5. Equivalent Feet of Pipe Due to Valve and Fitting Friction
Copper Tube, O.D., Type “L”
1/2
5/8
7/8
1-1/8
1-3/8
1-5/8
2-1/8
2-5/8
3-1/8
3-5/8
4-1/8
5-1/8
6-1/8
Globe Valve (Open)
14
16
22
28
36
42
57
69
83
99
118
138
168
Angle Valve (Open)
7
9
12
15
18
21
28
34
42
49
57
70
83
90˚ Turn Through Tee
3
4
5
6
8
9
12
14
17
20
22
28
34
Tee (Straight Through) or Sweep Below
.75
1
1.5
2
2.5
3
3.5
4
5
6
7
9
11
90˚ Elbow or Reducing Tee (Straight Through)
1
2
2
3
4
4
5
7
8
10
12
14
16
Table . Recommended Remote Condenser Line Sizes
Net Evaporator
Capacity
Total Equiv.
Length
R-22
R507 & R-0A
Discharge Line (O.D.)
Liquid Line Cond. to
Receiver (O.D.)
Discharge Line (O.D.)
Liquid Line Cond. to
Receiver (O.D.)
3,000
50
3/8
3/8
3/8
3/8
100
3/8
3/8
3/8
3/8
6,000
50
3/8
3/8
1/2
3/8
100
1/2
3/8
1/2
3/8
9,000
50
1/2
3/8
1/2
3/8
100
1/2
3/8
1/2
3/8
12,000
50
1/2
3/8
1/2
3/8
100
5/8
3/8
5/8
1/2
18,000
50
5/8
3/8
5/8
1/2
100
5/8
3/8
7/8
1/2
24,000
50
5/8
3/8
5/8
1/2
100
7/8
1/2
7/8
5/8
36,000
50
7/8
1/2
7/8
5/8
100
7/8
5/8
7/8
7/8
48,000
50
7/8
5/8
7/8
5/8
100
7/8
7/8
1-1/8
7/8
60,000
50
7/8
5/8
7/8
7/8
100
1-1/8
7/8
1-1/8
7/8
72,000
50
7/8
7/8
1-1/8
7/8
100
1-1/8
7/8
1-1/8
1-1/8
90,000
50
1-1/8
7/8
1-1/8
7/8
100
1-1/8
7/8
1-1/8
1-1/8
120,000
50
1-1/8
7/8
1-1/8
1-1/8
100
1-3/8
1-1/8
1-3/8
1-3/8
180,000
50
1-3/8
1-1/8
1-3/8
1-3/8
100
1-5/8
1-3/8
1-5/8
1-5/8
240,000
50
1-3/8
1-3/8
1-5/8
1-3/8
100
1-5/8
1-3/8
2-1/8
1-5/8
300,000
50
1-5/8
1-3/8
1-5/8
1-5/8
100
2-1/8
1-5/8
2-1/8
2-1/8
360,000
50
1-5/8
1-5/8
2-1/8
1-5/8
100
2-1/8
2-1/8
2-1/8
2-1/8
480,000
50
2-1/8
1-5/8
2-1/8
2-1/8
100
2-1/8
2-1/8
2-1/8
2-5/8
600,000
50
2-1/8
2-1/8
2-1/8
2-1/8
100
2-5/8
2-5/8
2-5/8
2-5/8
720,000
50
2-1/8
2-1/8
2-1/8
2-5/8
100
2-5/8
2-5/8
2-5/8
3-1/8
840,000
50
2-1/8
2-1/8
2-5/8
2-5/8
100
2-5/8
2-5/8
2-5/8
3-1/8
960,000
50
2-5/8
2-5/8
2-5/8
2-5/8
100
2-5/8
3-1/8
3-1/8
3-5/8
1,080,000
50
2-5/8
2-5/8
2-5/8
3-1/8
100
3-1/8
3-1/8
3-1/8
3-5/8
1,200,000
50
2-5/8
2-5/8
2-5/8
3-1/8
100
3-1/8
3-1/8
3-5/8
4-1/8
1,440,000
50
2-5/8
3-1/8
3-1/8
3-5/8
100
3-1/8
3-5/8
3-5/8
4-1/8
1,680,000
50
3-1/8
3-1/8
3-1/8
3-5/8
100
3-5/8
3-5/8
3-5/8
4-1/8