论文部分内容阅读
We simulated the heat transfer phenomena of the heating module that is primarily based on the radiant energy in the near-infra-red(NIR) domain.In the module,the power emitted by the lamp filament is distributed to the lamp glass,reflector,and the target medium,which are cooled by an air flow.The radiant heat transfer is simulated by using the ray-tracing scheme,in which the spectral characteristics of the emission and the materials are incorporated.The heat transport from the lamp glass to the cooling air is analyzed by using the finite volume method.As the lamp-filament temperature rises in the range of 3000-3400K,the NIR radiant power on the target medium increases.However,the lamp-glass temperature also rises,and the proportion of the NIR power to the entire radiation has a peak in the temperature range.The spectral distributions of the absorbed energies in all the components in the module are highly non-uniform,and a monochromatic model of the radiant heat transfer may result in a significant discrepancy.
We simulated the heat transfer phenomena of the heating module that is primarily based on the radiant energy in the near-infra-red (NIR) domain. The module, the power emitted by the lamp glass, and the target medium, which are cooled by an air flow. The radiant heat transfer is simulated by using the ray-tracing scheme, in which the spectral characteristics of the emission and the materials are. the heat transport from the lamp glass to the cooling air is analyzed by using the finite volume method. As the range of 3000-3400K, the NIR radiant power on the target medium increases. However, the lamp-glass temperature also, and the proportion of the NIR power to the entire radiation has a peak in the temperature range. The spectral distributions of the absorbed energies in all the components in the module are highly non-uniform, and a monochromatic model of the radiant heat transfer may result in a significant discrepancy.