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Thermal model of an IR-radiator and calculation of the radiation field

机译：IR型辐射器的热模型及辐射场计算

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A thermal model of an IR-radiator with 1000 W nominal power and about 300 mm length is developed. Using the thermal software ESARAD and ESATAN the radiation field of one or an arrangement of a set of IR radiators is calculated quantitatively. This thermal model of the IR radiator arrangement can be integrated as part of the thermal model of the test article or the test set-up. Defined test runs can be simulated and the thermal behavior can be predicted. The theoretically defined radiation field of a volume of 2 m x 2 m x 1 m was compared with a measured field of an IR radiator. There is a good agreement between the calculated and the measured values. Differences are in the range of 1% to 2.5% for the standard deviation. The 3-dimensional radiation field is stored in equidistant steps in a matrix. This matrix is the basis of a superpositioning program which allows to calculate the radiation field of defined fields of IR radiators. The irradiance distribution of defined test planes can be predicted in absolute or relative values. For each IR radiator the origin co-ordinates, the direction of the filament and the direction of the reflector must be defined. Examples for IR radiator arrangements and resulting irradiance distribution in the target plane are presented. An optimization for the arrangement of the IR radiators in a plane for illuminating plane surfaces of test articles, for example solar panels, is performed. The best results are obtained if the distance of the IR radiators in filament direction is 30 mm to 50 mm and perpendicular to the filament the rows are arranged in a distance of 250 mm to 300 mm.
机译：开发了具有1000W值和约300mm长度的IR散热器的热模型。使用热软件Esarad和Esatan定量计算一组IR辐射器的一个或一组IR辐射器的辐射场。 IR散热器装置的该热模型可以作为测试制品的热模型的一部分或测试设置。可以模拟定义的测试运行并且可以预测热行为。将体积为2m×2m×1m的理论定义的辐射场与IR散热器的测量场进行比较。计算结果与测量值之间存在良好的一致性。标准偏差的差异在1％至2.5％的范围内。三维辐射场以矩阵中的等距步骤存储。该矩阵是叠加程序的基础，其允许计算IR散热器的定义字段的辐射场。可以以绝对或相对值预测定义的测试平面的辐照度分布。对于每个IR散热器，必须定义灯具的原点，灯丝的方向和反射器的方向。提出了IR散热器装置的实施例，并呈现目标平面中的辐照度分布。执行用于照射测试制品的平面的IR辐射器的布置的优化，例如太阳能电池板。如果在细丝方向上的IR辐射器的距离为30mm至50mm并且垂直于灯丝，则距离距离为250mm至300mm的距离，因此获得了最佳结果。

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