DOWTHERM SR-1 and DOWFROST HD Heat Transfer Fluids In ...
DOWTHERM SR-1 and DOWFROST HD Heat Transfer Fluids In ...
DOWTHERM SR-1 and DOWFROST HD Heat Transfer Fluids In ...
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Figure 7 –– Pressure Drop at 25% Volume Propylene Glycol<br />
(Steel Tube, 25°F)<br />
PRESSURE DROP, psi/100 ft of tube<br />
12<br />
100<br />
10<br />
1.0<br />
2<br />
1/2"<br />
4<br />
VELOCITY, ft/sec<br />
3/4"<br />
6<br />
8<br />
Factor<br />
Factor<br />
1.10 1.03<br />
1.05<br />
1.02<br />
1.00<br />
1.01<br />
0.95<br />
0.90 1.00<br />
Temperature Temperature Correction Correction<br />
Multiplier Multiplier Factor Factor<br />
0.85 0.99<br />
0.80<br />
0.98<br />
0.75<br />
0.97<br />
0.70<br />
15<br />
15 25 35 3545<br />
45 55 65 55 75 65 85<br />
Temperature, Temperature, °F °F<br />
0.1<br />
0.1 1.0 10<br />
FLOW RATE, U.S. gallons per minute<br />
100<br />
10<br />
1"<br />
STEEL TUBE<br />
1-1/2"<br />
2"<br />
2-1/2"<br />
75<br />
85
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