论文部分内容阅读
(1)照射距离要选择恰当并能及时调整辐射源和被辐射加热物料之间的照射距离的远或近,对物料接受红外辐射能量的多少关系很大。辐射源所放射出来的红外线,如是成圆弧形向四周散射的、而不是成平行光的射线,则被辐射物料接受辐射源所放射出的能量、是与它们之间的距离平方成反比的。也就是被照射物料距辐射源愈远、则其所接受到的辐射能量愈少。由于我们所选用的辐射源(即使是管状的,一般电都带有反射装置)、所放射出来的红外线都不是成圆弧形向四周散射的,同时在烘道内的物料加热过程、包括辐射加热和对流加热二种形式,还涉及到多次反射、辐射和混合气体的吸收等问题,加热情况十分复杂,影响加
(1) the irradiation distance to choose the appropriate and timely adjustment of the radiation source and radiation heating material is far or near the irradiation distance, the material to receive much of the infrared radiation energy. Radiation emitted by the source of infrared, if the arc scattered around to the surrounding, rather than into a parallel ray of radiation, the radiation of radiation received by the radiation source emits energy is inversely proportional to the square of the distance between them . That is, the farther the irradiated material is from the radiation source, the less radiation energy it receives. Due to the radiation source we choose (even the tubular, usually with a reflective device), the radiation emitted by the arc are not all around the scattering, while the material in the drying tunnel heating process, including radiation heating And convection heating two forms, but also involves multiple reflections, radiation and mixed gas absorption and other issues, the heating situation is very complicated, the impact of plus