EXPERIMENTAL HEAT TRANSFER AND PRESSURE DROP OF LIQUID HYDROGEN FLOWING THROUGH A HEATED TUBE
Technical Report
·
OSTI ID:4843654
Heat-transfer and pressure-drop characteristics of liquid parahydrogen flowing through a vertical tube are correlated on film conditions using the Martinelli parameter and a modified Dittus-Bcelter experimental Nusselt number relation. Conditions investigated were: inlet pressure, 30 to 70 lb/sq in. abs; heat flux to 1 Btu/(sq in.)(sec); temperature differential, 50 deg to 750 deg R between wall and bulk. The friction losses are negligible relative to the momentum losses, and pressure drop may be predicted by the one-dimensional momentum equation. Paraortho conversion is discussed, and property data and a design procedure are presented. (auth)
- Research Organization:
- National Aeronautics and Space Administration. Lewis Research Center, Cleveland
- NSA Number:
- NSA-15-027741
- OSTI ID:
- 4843654
- Report Number(s):
- NASA-TN-D-765
- Country of Publication:
- United States
- Language:
- English
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