Results 161 to 170 of about 2,141 (211)

Busbar copper losses computation

The European Physical Journal Applied Physics, 2003
International ...
Besacier, M., Guichon, J.M, Schanen, J.L, Roudet, J.   +3 more
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Copper loss from the Copper T model TCu220C

Contraception, 1982
The effect of mineral deposits on the copper dissolution rate of the Copper T Model TCu22OC was examined. 118 Copper T22OC devices removed from subjects for various medical and personal reasons after 12 to 72 months in utero were examined and graded based on the proportion of the total copper area covered with mineral deposits.
M. Thiery, F. Schmidt, H.J. Tatum
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Menstrual blood loss with copper intrauterine devices

Contraception, 1974
Abstract Menstrual blood loss was estimated quantitatively by Halberg & Nilson method for 336 women: 145 normal controls (240 cycles); 91 fitted with Cu-devices (349 collected cycles); 50 fitted with Lippes loops (224 cycles) and 50 on combined steroid contraceptive therapy (236 cycles).
F, Hefnawi, H, Askalani, K, Zaki
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No-load copper eddy-current losses

Journal of the A.I.E.E., 1926
One of the factors which is sometimes responsible for very considerable losses in rotating machines is that of eddy-current losses in the copper conductors resulting from slot leakage flux produced by the main flux. These losses occur at no-load as well as under load and should not be confused with the copper losses resulting from the slot leakage flux
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Discussion on design optimization of inductor loss focused on copper loss and iron loss

2013 1st International Future Energy Electronics Conference (IFEEC), 2013
High-frequency switching of a power converter enables reduction of the volume of inductors. However, the temperature of the inductors becomes higher, because the thermal resistance of the inductor is increased. Therefore, accurate loss calculation of the inductor is one of the most important concerns for high-power-density converters.
Kazuto Emori, Toshihisa Shimizu, Yoshio Bizen   +2 more
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A simple method for optimal control of PMSM with loss minimization including copper loss and iron loss

2017 Twelfth International Conference on Ecological Vehicles and Renewable Energies (EVER), 2017
the goal of this paper is to present a comprehensive method to optimize the dq reference frame current of a permanent magnet synchronous machine (PMSM) including both copper and iron losses. The originality of the article concerns on the one hand the direct consideration of a resistance modeling iron loss in the circuit model and on the other hand the ...
Le Ballois, Sandrine, Vido, Lionel
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Loss of copper from oxychlorination catalysts

Journal of Applied Chemistry and Biotechnology, 1973
AbstractDuring the oxychlorination process, there are losses of copper from the catalyst as a result of a reaction with the walls of the reactor: the cupric ions are reduced to metallic copper and deposited on the walls. We have observed rates of deposition of the order of 10−2 g of copper per cm2 of walls per year, for walls of pure iron.
Chaim Aharoni, Jonathan Inbar
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Copper losses in slags.

1942
The usual practice of smelting copper is to smelt for matte first. [...] Cutting down the copper content of slag by a few one-hundredths percent does not seem important at first glance. Since an enormous amount of slags is produced, its economic significance, however, can not be too over-estimated.
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Mechanism of Selenium Loss in Copper Slag

Metallurgical and Materials Transactions B, 2018
During smelting of copper sulfide concentrate, selenium is distributed between silica-saturated iron-silicate slag and copper-iron sulfide matte. The recovery coefficients of selenium between slag and matte were determined as a function of the initial concentration of selenium at 1523 K (1250 °C) under an inert atmosphere in a vertical tubular furnace.
DESAI, B, TATHAVADKAR, V, BASU, S
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Iron and copper loss measurement in transformers

Electrical Engineering, 1958
IT IS HIGHLY DESIRABLE to improve the accuracy of measurement of transformer iron and copper losses. Unless accurate measurements are available, it is difficult to evaluate the benefit of modifications in processes and constructions intended to reduce the winding eddy losses, stray losses in the tanks, and the iron loss.
T. R. Specht, L. B. Rademacher, H. R. Moore   +2 more
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