Results 341 to 350 of about 746,625 (361)
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Durable Heat Flux Sensor for Extreme Temperature and Heat Flux Environments
Journal of Thermophysics and Heat Transfer, 2010This paper reports on the development and evaluation of a novel heat flux sensor, the high-temperature heat flux sensor, tested at temperatures and heat flux levels in excess of 1000°C and 10-13 W/cm 2 , respectively. The current sensor configuration uses type-K thermocouple materials in a durable welded thermopile arrangement contained within a ...
Thomas E. Diller +4 more
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Errors in heat flux measurements due to the thermal resistance of heat flux disks
Journal of Applied Physiology, 1990Questions have been raised regarding the effect of the thermal resistance of heat flux transducers (HFTs) on the thermal flux from the skin. A model capable of simulating a large range of "tissue" insulation (variable-R model) was used to study the effect of the underlying tissue insulation on the relative error in heat flux due to the thermal ...
J. Frim, P. Tikuisis, Michel B. Ducharme
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Heat flux measurement techniques
Proceedings of the I MECH E Part C Journal of Mechanical Engineering Scienc, 1999Heat flux measurement is used in the field of fluid mechanics and heat transfer to quantify the transfer of heat within systems. Several techniques are in common use, including: differential temperature sensors such as thermopile, layered resistance temperature devices or thermocouples and Gardon gauges; calorimetric methods involving a heat balance ...
J R Greenwood +2 more
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2012
Infrared thermography is predominantly applied in thermo-fluid-dynamics for the measurement of the convective heat flux q c (energy per unit surface and per unit time, W/m 2), and/or the convective heat transfer coefficient h (heat flux per unit temperature difference, W/m 2 K), between a solid surface and a fluid flowing on it.
Tommaso Astarita +1 more
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Infrared thermography is predominantly applied in thermo-fluid-dynamics for the measurement of the convective heat flux q c (energy per unit surface and per unit time, W/m 2), and/or the convective heat transfer coefficient h (heat flux per unit temperature difference, W/m 2 K), between a solid surface and a fluid flowing on it.
Tommaso Astarita +1 more
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Heat Flux and Heat Transfer Coefficient
2021Heat flux and heat transfer coefficient may either be measured by a single measurement process, or they may require the measurement of several quantities before they may be estimated. Of course, it is best if the required quantity is directly measurable. We will give as much detail as possible, keeping in mind the target reader of the book.
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1979
Energy conversions on the soil surface and the temperature conditions that result from them in the ground-proximate air only become entirely clear when one knows more concerning the heat movement in soil and in the air. In order to understand heat movement in the soil, one first needs to know something concerning the physical properties of soils. Every
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Energy conversions on the soil surface and the temperature conditions that result from them in the ground-proximate air only become entirely clear when one knows more concerning the heat movement in soil and in the air. In order to understand heat movement in the soil, one first needs to know something concerning the physical properties of soils. Every
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Transverse flux induction heating
Electrical Engineering, 1950FOR SEVERAL years following 1941, the author was engaged in the development of radio-frequency induction heating for the flow-brightening of electrolytic tin plate. Lines are in operation today melting the electrolytically deposited tin coating on 30-inch-wide steel strip at speeds of 1,300 feet per minute with a power input of 1,200 kw to the strip ...
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Modern Physics Letters B, 1999
A first, nontrivial result from a novel systematic theory of fully-developed 3D hydrodynamic turbulence, viz. using dynamical response functions for turbulent shear flow, the thermal flux spectrum on the basis of the inertial range energy spectrum.
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A first, nontrivial result from a novel systematic theory of fully-developed 3D hydrodynamic turbulence, viz. using dynamical response functions for turbulent shear flow, the thermal flux spectrum on the basis of the inertial range energy spectrum.
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Heat Flux and Thermal Resistance
2014Heat flux is a major issue that must be considered for evacuation, fire spread, and structure protection in tunnel fires. The three heat transfer mechanisms: convective, radiative, and conductive heat transfer are described with a focus on correlations related to tunnel fires.
Anders Lönnermark +2 more
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