Heat transfer in cryogenic liquids under pressure
Abstract
The dependence of the heat transfer on pressure is studied for a horizontal plane surface in liquid helium, liquid hydrogen, and liquid nitrogen in the range 0.03 < p/ pc < 0.9: a maximum of the maximum heat flux density q˙ m,m was found at ∼0.35 pc. For helium, additionally, the dependence on the inclination of the surface against the horizontal was determined. A general representation for the dependence of the reduced maximum heat flux density q˙ m/q m,m on the reduced pressure p/ pc is given which also describes adequately well the results obtained with other cryogenic liquids.
- Publication:
-
Cryogenics
- Pub Date:
- March 1975
- DOI:
- 10.1016/0011-2275(75)90178-2
- Bibcode:
- 1975Cryo...15..121B
- Keywords:
-
- Cryogenic Fluids;
- Heat Flux;
- Heat Transfer Coefficients;
- Pressure Effects;
- Critical Pressure;
- Cryostats;
- Liquid Helium;
- Liquid Hydrogen;
- Liquid Nitrogen;
- Fluid Mechanics and Heat Transfer