Topic
Thermal radiation
About: Thermal radiation is a research topic. Over the lifetime, 12290 publications have been published within this topic receiving 197186 citations. The topic is also known as: heat radiation.
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TL;DR: In this article, the authors explored the significance of thermal radiation on mixed convective boundary layer flow of a hybrid (SiO2-MoS2/H2O) nanofluid.
61 citations
TL;DR: In this article, energy balance models of the chromosphere-corona transition region are computed for a segment of the average Sun network using assumed magnetic field geometry, and two classes of models are considered: conduction driven and flow driven.
Abstract: Energy balance models of the chromosphere-corona transition region are computed for a segment of average Sun network using assumed magnetic field geometry. The energy fluxes considered include radiation, conduction, enthalpy, and gravitational potential energy, but do not include mechanical heating. Two classes of models are considered: conduction driven and flow driven. In the former class, the thermal conductive flux vanishes at the base of the transition region, and in the latter class the thermal conductive flux increases with depth or remains constant. The conduction driven models require primarily outflow, whereas the flow driven models require downflow. It appears that the flow-driven models give best overall agreement with observations for 3 x 10/sup 5/ K< or =T< or =1 x 10/sup 6/ K, but that neither class of models is satisfactory for T< or =1 x 10/sup 5/ K. It is concluded, however, that the flow-driven models have ample energy supply even in the low transition region, and there is no apparent need for additional energy sources.
61 citations
Patent•
14 Jul 1981
TL;DR: In this article, the authors used a radiation and convection heat loss detector to estimate the heat loss from a building or machine using a wide band radiation sensor and a sonar device.
Abstract: Need for a simple to use device that gives good estimates of heat loss from a building or machines exists This device uses a radiation and convection heat loss detector to answer this need Radiation from an extended surface area as at (22) is detected with a sensor (40) having a wide field of view closely matching that of an associated camera (24) By simultaneously photographing the surface area at (22) of interest and detecting the radiation from that same area at (22), a clear record as in Fig 2 is provided for future use A wide band radiation sensor (40) is used Compensation for environmental radiation is made by first viewing the environment with the sensor (40) and holding the sensed signal and then subtracting that signal from the flux detected when the sensor (40) faces the extended surface area The date and time are also recorded on the photograph as in Fig 2 A sonar device (42) positioned on the camera provides a distance indication which, with a known field of view, allows for a determination of the total flux from the surface area at (22), a determination of convective heat losses from the surface and correction for atmospheric absorption of the radiant energy
61 citations
TL;DR: In this article, a Monte Carlo simulation of the phonon transport within silicon structures subjected to internal heat generation was explored, and it was shown that the heat diffusion equation significantly underestimates temperature distribution at nanoscales in the presence of an external heat source.
61 citations
TL;DR: In this paper, the authors examined the heat transfer attributes of magnetohydrodynamic hybrid nanofluid flow in the presence of radiation and found that the Nusselt number increases significantly for lower values of pressure and decreases for higher pressure gradients while keeping the radiation value at zero.
61 citations