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Volume 4: Heat Transfer; Electric Power; Industrial and Cogeneration, 1989
This paper discusses a new automated, computer controlled heat flux measurement facility. Continuous transient and steady-state surface heat flux values varying from about 0.3 to 6 MW/m2 over a temperature range of 100 to 1200 K can be obtained in the facility.
Curt H. Liebert, Donald H. Weikle
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This paper discusses a new automated, computer controlled heat flux measurement facility. Continuous transient and steady-state surface heat flux values varying from about 0.3 to 6 MW/m2 over a temperature range of 100 to 1200 K can be obtained in the facility.
Curt H. Liebert, Donald H. Weikle
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PROPERTIES OF HEAT FLUX FUNCTIONS AND A LINEAR THEORY OF HEAT FLUX
International Journal of Modern Physics B, 1995The symmetry and positive definiteness of thermal conductivity tensor K are used to derive some properties of heat flux functions ɸi (i=0, 1, 2). All ɸi are shown to be real-valued. Both ɸ0 and ɸ2 are found to be positive definite, and ɸ1 is constrained between −(ɸ0 + ɸ2) and (ɸ0 + ɸ2).
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Modeling of Heat Flux Distortion Around Heat Flux Sensors
1985The effect of a heat flux sensor on the heat transfer in the material surrounding the sensor has been studied in detail, and a steady-state finite difference computer model has been written to predict the ratio of the heat flux through the sensor to the undisturbed flux in the material surrounding the sensor, qs/qm, as a function of the ratio of the ...
TP Bligh, DM Apthorp
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Sensors and Actuators A: Physical, 1994
Abstract A method and sensor for direct temperature-gradient and heat-flux measurement is proposed. The semiconductor heat-flux sensor is based on the effect of thermodrift of charge carriers in a limited crystal. It represents a plane intrinsic semiconductor with different temperatures and different surface-recombination velocities at the opposite ...
J. Kaupužs, Arthur Medvid
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Abstract A method and sensor for direct temperature-gradient and heat-flux measurement is proposed. The semiconductor heat-flux sensor is based on the effect of thermodrift of charge carriers in a limited crystal. It represents a plane intrinsic semiconductor with different temperatures and different surface-recombination velocities at the opposite ...
J. Kaupužs, Arthur Medvid
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International Journal of Modern Physics D, 1995
The total energy in a sphere containing an isotropic shear-free conducting heat fluid is studied in the frame of a spherically symmetric metric. Firstly, we examine the role played by the heat flux. Secondly, we point out the contribution to the energy by the Weyl tensor.
G. Le Denmat +3 more
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The total energy in a sphere containing an isotropic shear-free conducting heat fluid is studied in the frame of a spherically symmetric metric. Firstly, we examine the role played by the heat flux. Secondly, we point out the contribution to the energy by the Weyl tensor.
G. Le Denmat +3 more
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1975
The critical heat flux is the heat flux at which a transition from nucleate to film boiling occurs. It is of interest to designers because a marked reduction in heat transfer results from the transition, which may be rather sudden and which is accompanied by a substantial rise in surface temperature. Knowledge of the critical heat flux dictates whether
W. Frost, R. Von Reth
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The critical heat flux is the heat flux at which a transition from nucleate to film boiling occurs. It is of interest to designers because a marked reduction in heat transfer results from the transition, which may be rather sudden and which is accompanied by a substantial rise in surface temperature. Knowledge of the critical heat flux dictates whether
W. Frost, R. Von Reth
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2015
Climatic conditions on the earth’s surface are in part a function of varying physical position (elevation, latitude, and aspect) and the influence of large-scale meteorological forces such as air and ocean currents. The density and architecture of plant canopies in natural systems are directly influenced by these climatic factors.
Sauer, Thomas J., Horton, Robert
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Climatic conditions on the earth’s surface are in part a function of varying physical position (elevation, latitude, and aspect) and the influence of large-scale meteorological forces such as air and ocean currents. The density and architecture of plant canopies in natural systems are directly influenced by these climatic factors.
Sauer, Thomas J., Horton, Robert
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2015
The critical heat flux (CHF) condition is characterized by a sharp reduction of the local heat transfer coefficient as a result of the replacement of liquid by vapor adjacent to the heat transfer surface [1]. The CHF condition in flow boiling can be of different nature [1–5].
Gian Piero Celata, Sujoy Kumar Saha
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The critical heat flux (CHF) condition is characterized by a sharp reduction of the local heat transfer coefficient as a result of the replacement of liquid by vapor adjacent to the heat transfer surface [1]. The CHF condition in flow boiling can be of different nature [1–5].
Gian Piero Celata, Sujoy Kumar Saha
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Acta Horticulturae, 2018
Increasing urban green infrastructure (UGI) in a city contributes to improve urban air quality and urban climate in summer, reducing buildings surface temperature, especially in southern Europe. UGI includes green walls and their correct application requires the knowledge of the energy performance of the applied green system.
Vox G. +3 more
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Increasing urban green infrastructure (UGI) in a city contributes to improve urban air quality and urban climate in summer, reducing buildings surface temperature, especially in southern Europe. UGI includes green walls and their correct application requires the knowledge of the energy performance of the applied green system.
Vox G. +3 more
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Achieving a Specific Nonuniform Heat Flux With an Electrical Heat Flux Plate
Journal of Heat Transfer, 2013A voltage applied across a uniform plate results in a uniform ohmic heat dissipation, useful for conducting heat transfer experiments or preventing unacceptably low temperatures on spacecraft components. Most experiments to date involve application of a known uniform heat flux to the surface of a model.
James L. Rutledge, Marc D. Polanka
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