✦ LIBER ✦

Time dependent heat transfer in pressurized superfluid helium

✍ Scribed by T. Okamura; Y. Yoshizawa; A. Sato; K. Ishito; S. Kabashima; S. Shioda

Publisher: Elsevier Science
Year: 1989
Tongue: English
Weight: 426 KB
Volume: 29
Category: Article
ISSN: 0011-2275
DOI: 10.1016/0011-2275(89)90263-4

No coin nor oath required. For personal study only.

✦ Synopsis

Experimental and theoretical investigations have been carried out on time dependent heat transfer in a pressurized He II channel, terminated by a copper rod. Heat flux is applied in the form of a sinusoidal wave. As the heat flux frequency increases, copper and He II temperatures converge with the values that are obtained when the effective value of heat flux is constantly applied. The Kapitza conductance is independent of the heat flux frequency, within the range from 0 to 40Hz. On the basis of the two fluid models combined with the heat conduction in copper and the Kapitza conductance at the He II-copper interface, a one dimensional heat transfer model has been developed, which can accurately predict the experimentally determined time dependent heat transfer characteristics.

📜 SIMILAR VOLUMES

Time dependent heat transport in subcool

Time dependent heat transport in subcooled superfluid helium

✍ P. Seyfert; J. Lafferranderie; G. Claudet 📂 Article 📅 1982 🏛 Elsevier Science 🌐 English ⚖ 740 KB

The authors present an extensive study on the behaviour of time dependent heat transport in subcooled He II under conditions which are closely related to the cooling problem of superconducting magnets. Experimental results on the.delay for onset of burnout and on the transient recovery from burnout

Superconductor stability against heat pu

Superconductor stability against heat pulses in saturated and pressurized superfluid helium

✍ V.E. Keilin; I.A. Kovalev; S.L. Kruglov; D.B. Pavin 📂 Article 📅 1980 🏛 Elsevier Science 🌐 English ⚖ 295 KB

Superconductor stability against local heat pulses in saturated He-I at 4.2 K and pressurized and saturated He-II at 2.05 K has been reported. It is shown that the stability increases in pressurized He-I I as compared to saturated He-I I which only increases in the range of low normal zone propagati

The prediction of steady state heat flux

The prediction of steady state heat flux and related temperature profiles in pressurized superfluid helium II

✍ Y. Kamioka 📂 Article 📅 1983 🏛 Elsevier Science 🌐 English ⚖ 382 KB

Influences of hydrostatic bath pressure,

Influences of hydrostatic bath pressure, van der Waals pressure, and fountain pressure on the heat transfer in a bath of superfluid helium

✍ R.Z. Wang; P. Zhang 📂 Article 📅 2000 🏛 John Wiley and Sons 🌐 English ⚖ 76 KB 👁 2 views

Practical data on steady state heat tran

Practical data on steady state heat transport in superfluid helium at atmospheric pressure

✍ G. Bon Mardion; G. Claudet; P. Seyfert 📂 Article 📅 1979 🏛 Elsevier Science 🌐 English ⚖ 223 KB

Experimental results covering a technically interesting range of temperatures ( 1.4 K T ~ T x) and channel dimensions (L <~ 100 cm, 0.2 <<. id <<. 5 mm) have been complied into a collection of practical data on steady state heat transport in superfluid helium at atmospheric pressure. The data, given

Cooling by convective heat transport in

Cooling by convective heat transport in superfluid helium

✍ J.F. Olijhoek; J.K. Hoffer; H. Van Beelen; R. De Bruyn Ouboter; K.W. Taconis 📂 Article 📅 1973 🏛 Elsevier Science ⚖ 1012 KB