大气气溶胶对远红外窗口辐射致冷的影响  

The Effect of Atmospheric Aerosol on the Radiation Cooling through Far Infrared Window

作　　者：晏然[1] 袁远[1] 张旭升[1] 帅永[1] 谈和平[1] 

机构地区：[1]哈尔滨工业大学能源科学与工程学院,黑龙江哈尔滨150001

出　　处：《工程热物理学报》2013年第1期121-124,共4页Journal of Engineering Thermophysics

基　　金：国家自然科学基金委创新研究群体(No.51121004);国家自然科学基金资助项目(No.51276049)

摘　　要：本文针对CO_2减排,讨论了辐射致冷理论的相关问题。由于高层大气或外宇宙空间温度极低,可以此作为冷源,利用8～13μm的大气远红外窗口进行辐射散热,以降低能源消耗和CO_2的排放,削弱温室效应。在量化分析过程中,大气中气体辐射特性与气溶胶粒子辐射特性对其散热效果起到决定性作用。本文对0.2～20μm波段的辐射通过大气层时,由于气溶胶粒子散射和吸收造成的衰减进行了米氏散射模型计算,验证了8～13μm大气远红外窗口在辐射致冷中的关键作用,并针对辐射致冷理论应用于CO_2减排进行了相关理论性分析。This paper aimed at reducing emissions of CO_2,discussed issues about the theory of radiation cooling.We can use the upper atmosphere or outer space as a cold source because of their low temperature,and it will promote the heat transfer by radiation through the 8～13μm atmospheric infrared window to reduce energy consumption and CO_2 emissions.In quantitative analysis,the radiative properties of atmospheric gases and aerosol particles play a decisive role in the heat transfer process.In this paper,the model of the attenuation,which caused by aerosol particle scattering and absorption when 0.2-20μm band of electromagnetic waves were passing through the atmosphere,was established and calculated with Mie theory.Ultimately,the result explained the critical role of 8～13μm atmospheric far-infrared window in the radiation cooling. The paper also did some related theoretical analysis about the application on CO_2 emission reductions.

关 键 词：辐射致冷 气溶胶 衰减系数 CO_2减排 

分 类 号：TK124[动力工程及工程热物理—工程热物理]