Results 301 to 310 of about 1,651,680 (347)

Stator thermal time constant

49th IEEE/IAS Industrial & Commercial Power Systems Technical Conference, 2013
The thermal model providing motor overload protection is derived from the first order differential equation for heat rise due to current in a conductor. Only the stator thermal time constant and the service factor are the required settings. The thermal model utilizes the full thermal capacity of the motor and allows current swings and cyclic overloads ...
Jon Steinmetz, Subhash C. Patel, Stanley E. Zocholl   +2 more
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Thermal-blooming time constant

Journal of the Optical Society of America, 1982
Thermal blooming is analyzed by using a wave-propagation code to determine the speed of response of the blooming effect to changes in the transmitted laser beam. Results are developed to indicate where along the propagation path the dominant part of the thermal-blooming effects arise.
David L. Fried, Gus E. Mevers
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Is The Thermal Time "Constant" Of A Diode Laser Really Constant?

SPIE Proceedings, 1990
Application of the concept of the thermal time "constant" for a description of the transient thermal behavior of diode lasers is examined in the present paper. This concept rests on the assumption that the lumped-heat-capacity method is applicable in this case what turns out not to be true.
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Thermal constants measurement techniques applied to thermal analysis

Thermochimica Acta, 1992
Abstract Recent development and applications of many new materials have resulted in them being made available only in small amounts or in special configurations such as thin films. In order to characterize their thermal transport and related properties in these forms, it has been necessary to develop new and improved quantitative measurement ...
R.P. Tye, R.L. Gardner, A. Maesono
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Thermal conductance and its relation to thermal time constants

Journal of Thermal Biology, 1981
Abstract A large body of thermoregulation studies exists in which the proper relationship between the physiological variable, thermal conductance, and heating or cooling time is not recognized. This is owing, in part, to conflicting definitions of conductance which either fail to relate to mean heat flow through the body surface or which fail to ...
Stanley L. Robertson, E.Norbert Smith
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Thermal behavior of the constant volume body plethysmograph

IEEE Transactions on Biomedical Engineering, 1995
The thermal behavior of the constant volume body plethysmograph under the thermal effect of the patient and the thermostatic bag is modeled by two relations: the first is between the temperature in the box and the heat flux generated by the patient and the bag, and the second is between the pressure in the box and the same flux.
Philippe Saucez, Marcel Remy, Christine Renotte, Marcel Mauroy   +3 more
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Thermal expansion and elastic constants

International Journal of Thermophysics, 1991
We give a simple, useful relationship between thermal expansion, ΔV/V, and elastic constants. The relationship permits estimation of thermal expansion from only elastic constants (second order and third order) and atomic volume. Elastic-constant temperature dependence is not required.
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Correlation Functions and Thermal Rate Constants

The Journal of Physical Chemistry A, 2001
Thermal rate constants k(T) and cumulative reaction probabilities N(E) can be computed as a sum of correlation functions C-nm =
Hans O. Karlsson, Osvaldo Goscinski
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A Review of Thermal-Radiation Constants

Journal of Fluids Engineering, 1954
Abstract A survey of engineering literature and some of the recent textbooks in heat transfer indicates a lack of knowledge by the authors that the various radiation constants used are no longer valid. The various radiation constants, as reported in the CGS system of units by Birge (3), have been ignored, as well as the recent work of ...
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A thermal interpretation of the cosmological constant

Classical and Quantum Gravity, 1988
A metric-affine geometrical structure is used to formulate a generalised theory of gravity, in which the motion of a test particle is characterised by a finite proper acceleration in the local tangent space. According to the local equivalence, valid for quantum systems, between acceleration and temperature, the theory is thermally interpreted as an ...
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