Transient heat transfer to liquid helium from bare copper surfaces
โ Scribed by L. Dresner
- Publisher
- Elsevier Science
- Year
- 1979
- Tongue
- English
- Weight
- 170 KB
- Volume
- 19
- Category
- Article
- ISSN
- 0011-2275
No coin nor oath required. For personal study only.
๐ SIMILAR VOLUMES
more than 20 times when superfluid helium flows through narrow channels 7 and other impurities which are normally present as solid suspensions in liquid helium to the extent of"-0.003% 8 are simultaneously removed. According to our estimates, the concentration of He 3 in the gaseous He 4 obtained is
A hot-strip technique was used to examine transient heat transfer from different smooth surfaces into liquid nitrogen. In this way the temperature of a surface subjected to a heat pulse was measured. In addition, optical methods were used to observe bubble formation and growth. The onset of nucleate
Heat transfer characteristics of a copper plate (18 mm x 76 mm) to liquid helium have been measured by changing the orientation and treatment of the heat transfer surface. The treated heat transfer surfaces were (a) the polished Cu surface, (b) the oxidized Cu surface and (cl, (d) the Cu surface oxi
Transient heat transfer experiments were performed using the "filament methode", where a thin monofilamentary NbTi/Cu wire is supplied with a 50 Hz ac current of an amplitude above Ic. The filament behaves as a 100 Hz heater and, via the temperature dependence of Ic, as its own thermometer. Above Tc