MEASUREMENTS OF THE HEAT-TRANSFER TO LIQUID-NITROGEN FROM CERAMIC COPPER-OXIDE SUPERCONDUCTORS

Authors
MOSQUEIRA J POMAR A CABEZA O MAZA J VIDAL F
Citation
J. Mosqueira et al., MEASUREMENTS OF THE HEAT-TRANSFER TO LIQUID-NITROGEN FROM CERAMIC COPPER-OXIDE SUPERCONDUCTORS, Physica. B, Condensed matter, 194, 1994, pp. 973-974
Citations number
11
Categorie Soggetti
Physics, Condensed Matter
Journal title
Physica. B, Condensed matter → ACNP
ISSN journal
09214526
Volume
194
Year of publication
1994
Part
1
Pages
973 - 974
Database
ISI
SICI code
0921-4526(1994)194:<973:MOTHTL>2.0.ZU;2-0
Abstract
We present measurements of pool boiling heat transfer from ceramic Y1B a2Cu3O7-delta to liquid nitrogen in the range of heat flux up to q(e) = 30 W/cm2. The heat transfer curve shows a double hysteresis closely related to the porosity of the samples. In the nucleate regime, q(e) d epends on the interface overtemperature, T(w), following a power law w ith an exponent close to 1.4.