基于透射法分析温度对柴油热辐射特性的影响
发布时间：2018-11-12 11:24
【摘要】：本文考虑透射法测量中窗片间的多重反射及入射光束收敛角度的影响,通过透射法测量窗片-液体-窗片三层结构的总透射比,并结合K-K关系式建立了液态碳氢燃料的热辐射特性光谱参数测量反演方法。采用该方法,对蒸馏水的热辐射光谱特性参数进行测量反演,通过与蒸馏水的公开数据对比,验证了该方法可靠性与准确性。在此基础上,对某国产柴油300~400 K温度范围内近红外波段的热辐射特性参数进行了测量及反演计算,获得了不同温度下近红外波段的光谱吸收指数及折射率。测量反演结果显示,在测量光谱区间该柴油折射率随温度变化不明显,但吸收指数随温度升高而减小且变化剧烈,不同温度下的吸收指数相对变化率可达20%。
[Abstract]:In this paper, the effect of multiple reflection between window slices and the convergent angle of incident beam is considered. The total transmittance of the three layer structure of window, liquid and window is measured by transmission method. Based on the K-K relation, an inversion method for the measurement of spectral parameters of thermal radiation characteristics of liquid hydrocarbon fuel is established. By using this method, the parameters of thermal radiation spectrum characteristics of distilled water are measured and inversion, and the reliability and accuracy of this method are verified by comparing with the open data of distilled water. On this basis, the thermal radiation characteristic parameters of a domestic diesel oil in the temperature range of 300K 400 K have been measured and inversed. The spectral absorption index and refractive index of the near infrared band at different temperatures have been obtained. The measured inversion results show that the refractive index of diesel oil does not change obviously with temperature in the range of measurement spectrum, but the absorption index decreases and changes sharply with the increase of temperature, and the relative change rate of absorption index can reach 20% at different temperature.
【作者单位】： 哈尔滨工业大学能源学院;哈尔滨工程大学动力与能源学院;
【基金】：国家自然科学基金资助项目(No.51376051,No.51676055) 航空科学基金(No.20162777012)
【分类号】：TE626.24
本文编号：2326968
[Abstract]:In this paper, the effect of multiple reflection between window slices and the convergent angle of incident beam is considered. The total transmittance of the three layer structure of window, liquid and window is measured by transmission method. Based on the K-K relation, an inversion method for the measurement of spectral parameters of thermal radiation characteristics of liquid hydrocarbon fuel is established. By using this method, the parameters of thermal radiation spectrum characteristics of distilled water are measured and inversion, and the reliability and accuracy of this method are verified by comparing with the open data of distilled water. On this basis, the thermal radiation characteristic parameters of a domestic diesel oil in the temperature range of 300K 400 K have been measured and inversed. The spectral absorption index and refractive index of the near infrared band at different temperatures have been obtained. The measured inversion results show that the refractive index of diesel oil does not change obviously with temperature in the range of measurement spectrum, but the absorption index decreases and changes sharply with the increase of temperature, and the relative change rate of absorption index can reach 20% at different temperature.
【作者单位】： 哈尔滨工业大学能源学院;哈尔滨工程大学动力与能源学院;
【基金】：国家自然科学基金资助项目(No.51376051,No.51676055) 航空科学基金(No.20162777012)
【分类号】：TE626.24
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