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FORCED CONVECTION, AIR VELOCITY (ft/min) |
| EXTRUSION LENGTH (in) |
NATURAL CONVECTION |
100 |
200 |
300 |
400 |
500 |
600 |
700 |
800 |
900 |
1000 |
1100 |
1200 |
| 0.25 |
242.20 |
183.33 |
129.63 |
105.84 |
91.66 |
81.98 |
74.84 |
69.29 |
64.81 |
61.11 |
57.97 |
55.27 |
52.92 |
| 0.50 |
171.27 |
129.63 |
91.66 |
74.84 |
64.81 |
57.97 |
52.92 |
48.99 |
45.83 |
43.21 |
40.99 |
39.08 |
37.42 |
| 1.00 |
121.10 |
91.61 |
64.77 |
52.89 |
45.80 |
40.96 |
37.40 |
34.62 |
32.38 |
30.53 |
28.97 |
27.62 |
26.44 |
| 2.00 |
85.63 |
64.89 |
45.88 |
37.46 |
32.44 |
29.02 |
26.49 |
24.52 |
22.94 |
21.63 |
20.52 |
19.56 |
18.73 |
| 3.00 |
69.92 |
52.88 |
37.39 |
30.53 |
26.44 |
23.64 |
21.58 |
19.98 |
18.69 |
17.62 |
16.72 |
15.94 |
15.26 |
| 4.00 |
60.55 |
45.81 |
32.39 |
26.45 |
22.90 |
20.49 |
18.70 |
17.31 |
16.19 |
15.27 |
14.48 |
13.81 |
13.22 |
| 5.00 |
54.16 |
40.99 |
28.98 |
23.66 |
20.49 |
18.33 |
16.73 |
15.49 |
14.49 |
13.66 |
12.96 |
12.36 |
11.83 |
| 6.00 |
49.44 |
37.39 |
26.44 |
21.58 |
18.69 |
16.72 |
15.26 |
14.13 |
13.22 |
12.46 |
11.82 |
11.27 |
10.79 |
| 7.00 |
45.77 |
34.61 |
24.47 |
19.98 |
17.30 |
15.48 |
14.13 |
13.08 |
12.23 |
11.53 |
10.94 |
10.43 |
9.99 |
| 8.00 |
42.82 |
32.39 |
22.90 |
18.70 |
16.19 |
14.48 |
13.22 |
12.24 |
11.45 |
10.79 |
10.24 |
9.76 |
9.35 |
| 9.00 |
40.37 |
30.53 |
21.58 |
17.62 |
15.26 |
13.65 |
12.46 |
11.53 |
10.79 |
10.17 |
9.65 |
9.20 |
8.81 |
| 10.00 |
38.30 |
28.97 |
20.48 |
16.72 |
14.48 |
12.95 |
11.82 |
10.94 |
10.24 |
9.65 |
9.16 |
8.73 |
8.36 |
| 11.00 |
36.51 |
27.62 |
19.53 |
15.95 |
13.81 |
12.35 |
11.27 |
10.44 |
9.76 |
9.20 |
8.73 |
8.32 |
7.97 |
| 12.00 |
34.96 |
26.44 |
18.69 |
15.26 |
13.22 |
11.82 |
10.79 |
9.99 |
9.34 |
8.81 |
8.36 |
7.97 |
7.63 |
| 13.00 |
33.59 |
25.40 |
17.96 |
14.66 |
12.70 |
11.36 |
10.37 |
9.60 |
8.98 |
8.46 |
8.03 |
7.66 |
7.33 |
| 14.00 |
32.37 |
24.48 |
17.31 |
14.13 |
12.24 |
10.95 |
9.99 |
9.25 |
8.65 |
8.16 |
7.74 |
7.38 |
7.06 |
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NOTE: For lengths and flow velocities not shown, the equation P.F. = 916 /  may be used.
Correction Factors for Temperature and Length |
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