Document wg4gqX3zqze84Q32yXEyN9Zro
HEATING VENTILATING AIR CONDITIONING GUIDE 1941
Table 9. Pressure Losses in Dichlorodifluoromethane Suction Refrigerant Lines
Copper Pipe Actual O.D.
Inches
h
iH
iH
m
Capacity Btu feb Hour
2,000 4,000 6,000
8,000 10,000 12,000
14,000 16,000 18,000
20,000
7,000 10,000 15,000
20,000 25,000 35,000
45,000 60,000 70,000
10,000 15,000 20,000
30,000 40,000 50,000
60,000 80,000 100,000
30,000 40,000 50,000
60,000 70,000 80,000
90,000 100,000 120,000
140,000
Pressure Drop in Pounds pbb Square Inch feb 100 Ft*
FRefrigerant Temperature Deo
-10
0.3 1.3 2.8
4.8 7.4 10.5
14.0
0.4 1.0 1.9
3.3 5.0 9.7
15.8
0.3 0.7 1.2
2.6 4.6 7.0
10.0
1.6 2.7 4.2
6.1 8.7
0
0.3 1.0 2.2
3.8 5.8 8.4
11.0 14.5
0.3 0.7 1.5
2.6 4.0 7.7
12.6
0.2 0.5 0.9
2.1 3.6 5.5
7.8 14.0
1.3 2.1 3.2
4.5 6.3 8.4
10
0.2 0.8 1.8
3.1 4.8 6.8
9.1 12.0 15.0
0.3 0.5 1.2
2.1 3.2 6.2
10.0
0.2 0.4 0.7
1.6 2.8 4.4
6.2 11.0
1.0 1.7 2.5
3.6 4.8 6.3
8.0 10.0
20
0.2 0.7 1.5
2.6 3.9 5.6
7.6 9.8 12.3
15.0
0.2 0.5 1.0
1.7 2.7 5.1
8.4 14.8
0.2 0.3 0.6
1.3 2.3 3.5
5.0 8.7 13.5
0.8 1.4 2.1
2.9 3.8 4.9
6.2 7.6
30
0.2 0.6 1.2
2.1 3.3 4.7
6.4 8.3 10.4
12.7
0.2 0.4 0.8
1.4 2.2 4.3
7.0 12.2
0.1 0.3 0.5
1.1 1.9 2.9
4.2 7.3 11.3
0.7 1.1 1.7
2.4 3.1 4.0
4.9 6.1 8.6
40
0.1 0.5 1.0
1.8 2.8 4.0
5.4 7.0 8.7
10.7
0.2 0.3 0.7
1.2 1.9 3.6
5.9 10.2 14.0
0.1 0.2 0.4
0.9 1.6 2.5
3.5 6.2 9.5
0.6 0.9 1.4
2.0 2.6 3.3
4.1 5.0 7.0
9.5
50
0.1 0.4 0.9
1.5 2.3 3.3
4.5 5.8 7.2
8.9
0.1 0.3 0.6
1.0 1.6 3.0
4.9 8.6 11.7
0.1 0.2 0.4
0.8 1.4 2.1
3.0 5.2 8.2
0.5 0.8 1.2
1.7 2.2 2.8
3.5 4.2 5.9
7.9
Length of tubing includes the average number of fittings-
464
CHAPTER 24. REFRIGERATION
------------ -
Table 9. Pressure Losses in Dichlorodifluoromethane Suction Refrigerant Lines (Continued)
Pbessubb Dbop in Pounds pbb Square Inch pbb 100 Ft*
Coppeb Pip
Actual O.D.
Inches
Btu pbb Hour
FRefrigerant Temperature Deo
50,000 100,000 150,000
-10
0
10
0.7 0.5 0.4 2.6 1.8 1.4 5.6 3.9 3.0
20 30
0.3 0.3 1.1 0.9 2.4 2.0
40 50
0.2 0.2 0.8 0.7 1.6 1.4
200,000
9.8 6.7 5.2 4.1 3.4 2.8 2.4
V/s 250,000 14.8 10.3 8.0 6.3 5.1 4.2 3.6
300,000
14.5 11.3 9.0 7.2 6.0 5.0
350,000 400,000
19.5
15.3 19.6
12.0 15.3
9.7 12.5
7.8 10.0
6.7 8.5
50,000 100,000 150,000
0.2 0.2 0.1 0.1 0.1 0.1 0.1 0.7 0.6 0.5 0.4 0.3 0.2 0.2 1.6 1.2 1.0 0.8 0.6 0.5 0.4
'
200,000
2.8 2.1 1.7 1.4 1.1 0.9 0.7
250,000
4.3 3.4 2.6 2.1 1.7 1.3 1.1
300,000
6.1 4.5 3.7 3.0 2.4 1.9 1.5
2H
350,000
8.2 6.0 5.0 4.0 3.2 2.5 2.0
400,000
7.8 6.5 5.1 4.2 3.3 2.7
450,000
7.7 6.4 5.3 4.0 3.5 .
500,000 550,000 .600,000
7.8 6.4 5.0 4.2 7.7 6.2 5.1 . 7.4 6.2
200,000 300,000 ' 400,000
1.2 1.0 0.8 0.6 0.5 0.4 0.4
2.6 2.0 1.6 1.3 1.0 0.8 0.7 4.5 3.4 . 2.6. 2.1 1.7 . 1-4 1.3
500,000
7.3 5.4 4.1 3.3 2.7 2.2 1.9
3 'A 600,000
8.1 6.0 4.7 3.8 3.1 2.7
700,000
8.4 6.5 5.2 4.2 3.5
800,000 900,000 1,000,000
8.6 6.8 5.5 4.6 8.7 7.0 5.9
8.9 7.3
300,000 400,000 500,000
1.2 0.9 0.7 0.6 0.5 0.4 0.3 2.0 1.6 1.3 1.0 0.8 0.7 0.6 3.2 2.5 1.9 1.6 1.3 1.0 0.9
600,000
4.6 3.6 2.8 2.2 1.8 1.5 1.3
700,000
6.4 4.9 3.8 3.0 2.5 2.0 1.7
800,000
8.7 6.4 4.9 3.9 3.2 2,5 2.2
3H
900,000
8.2 ' 6.2 4.9 3.9 3.2 2:7
1,000,000
7.7 6.1 4.9 4.0 3.3
1,100,000
9.4 7.3 5.8 4.8 4.0
1,200.000
1,300,000 1,400,000
8.7 ---
6.9 8.0 9.3
5.6 . 4.8 6.6 . 5.6 7.6 6.4
Length of tubing includes the average number of fittings.
. 465