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For automobile engine exhaust, the model of thermoelectric conversion system is established, numerical calculation of convection heat transfer and resistance characteristics of the channel is done. It has shown that with the intensified thermoelectric system, the heat transfer efficiency can be enhanced through convection heat transfer and acquire higher convection heat transfer coefficient; at the...
Fast depletion of fossil fuel resources is a major challenge to the world today. While great amount of fugitive methane emits into atmosphere, most of them is of lower concentration (typically below 1% methane), as lean methane disposal is difficult. Thermal flow reversal reactor is proper for lean methane oxidation. The heat transfer in thermal flow reversal reactor is unsteady. Temperature field...
The heat transfer performance of carbon dioxide in a horizontal tube with water in counter flow was experimentally investigated in this paper. The results indicate that the changes of inlet pressure, mass flow rate and cooling water flow rate have major effects on heat transfer performance. The coefficient and heat transfer capacity can be improved by increasing inlet pressure, mass flow rate and...
We have modeled underground isolated power cables by using magnetic eddy-current (EC) and thermal coupled formulations solved by the finite-element method (FEM). The magnetic field equation expressed in terms of magnetic vector potential (MVP) is strongly coupled with the total current density equation, which includes the source and the EC densities for taking into account skin and proximity effects...
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