| On the applicability of KirchofPs law and the principle of heat balance in thermal infrared remote sensing:A non-isothermal system |
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| 引用本文： | ZHANG Renhua,LI Zhaoliang,SUN Xiaomin,ZHU Zhilin & WANG Weimin Institute of Geographical Sciences and Natural Resources Research,Chinese Academy of Sciences,Beijing 100101,China, LSIIT (CNRS UMR7005),Bld Sebastien Brant,BP.10413,67412 Illkirch,France. On the applicability of KirchofPs law and the principle of heat balance in thermal infrared remote sensing:A non-isothermal system[J]. 中国科学D辑(英文版), 2005, 0(1) |
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| 作者姓名： | ZHANG Renhua LI Zhaoliang SUN Xiaomin ZHU Zhilin & WANG Weimin Institute of Geographical Sciences and Natural Resources Research Chinese Academy of Sciences Beijing 100101 China LSIIT (CNRS UMR7005) Bld Sebastien Brant BP.10413 67412 Illkirch France |
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| 摘 要： | This paper proposes a basic equation of thermal radiation interaction between surface objects on the basis of the principle of heat balance in the interface. The solution of this equation takes account of the contribution of sensible heat flux and latent heat flux more completely, compared with traditional solution for surface cooling and heating processes. By the aid of the experimental data conducted in the Xiaotangshan experimental site, Beijing, both the non-applicability of Kirchoff's law and the measurability of surface emissivity in a non-isothermal system have been highlighted. Two methods called ventilation and time-delay compensations have been proposed to reduce the error induced by change of surface temperatures of non-isothermal objects during the measurement of emissivity. Based on the solution of the basic equation, this paper has analyzed and pointed out the misunderstanding in comprehension and application of Kirchoff's law published in literature.
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On the applicability of KirchofPs law and the principle of heat balance in thermal infrared remote sensing:A non-isothermal system |
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| ZHANG Renhua,LI Zhaoliang,SUN Xiaomin,ZHU Zhilin , WANG Weimin Institute of Geographical Sciences and Natural Resources Research,Chinese Academy of Sciences,Beijing ,China, LSIIT. On the applicability of KirchofPs law and the principle of heat balance in thermal infrared remote sensing:A non-isothermal system[J]. Science in China(Earth Sciences), 2005, 0(1) |
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| Authors: | ZHANG Renhua LI Zhaoliang SUN Xiaomin ZHU Zhilin & WANG Weimin Institute of Geographical Sciences Natural Resources Research Chinese Academy of Sciences Beijing China LSIIT |
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| Affiliation: | CNRS UMR7005 |
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| Abstract: | This paper proposes a basic equation of thermal radiation interaction between surface objects on the basis of the principle of heat balance in the interface. The solution of this equation takes account of the contribution of sensible heat flux and latent heat flux more completely, compared with traditional solution for surface cooling and heating processes. By the aid of the experimental data conducted in the Xiaotangshan experimental site, Beijing, both the non-applicability of Kirchoff's law and the measurability of surface emissivity in a non-isothermal system have been highlighted. Two methods called ventilation and time-delay compensations have been proposed to reduce the error induced by change of surface temperatures of non-isothermal objects during the measurement of emissivity. Based on the solution of the basic equation, this paper has analyzed and pointed out the misunderstanding in comprehension and application of Kirchoff's law published in literature. |
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| Keywords: | applicability of Kirchoff's law heat balance non-isothermal system. |
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