一种高密度辐射计的设计及性能分析  

THE ANALYSIS OF A HIGH DENSITY RADIATION FLUX METER

作　　者：赵晓[1] 叶宏[1] 马玉龙[1] 

机构地区：[1]中国科学技术大学热科学与能源工程系,合肥230027

出　　处：《太阳能学报》2008年第11期1363-1369,共7页Acta Energiae Solaris Sinica

摘　　要：分析了辐照投射角、测量桥的传热特性、结构和材料等因素对一种高密度辐射计测量性能的影响。结果表明:铜制辐射计能完成10kW/m^2～15MW/m^2范围内的辐照测量,响应时间不超过5s,输出温差与投射辐射的密度值成正比;较长的测量桥适用于辐照密度低、分辨率要求高的场合,较短的测量桥则适用于辐照值较高的场合;用热扩散系数高的材料制造的辐射计,其测量上限值较高,而用热扩散系数低的材料制造的辐射计,则有较高的分辨率和较低的测量下限值。The key influencing factors to a high density radiation flux meter, such as radiation incident angle, the heat transfer characteristics, configuration and material of the measuring rod were analyzed. The following results were obtained. The radiometer made of copper can be used to measure the incident radiation between 10kW/m^2 to 15MW/m^2, with the response time less than 5s, and the output temperature difference is proportional to the radiation. A longer rod was appropriate for measurement of low density radiation and of higher resolution, while a shorter one for high density radiation and of moderate resolution. The rod made of material with high thermal diffusion coefficient has a high measuring upper limit value, while the rod of low thermal diffusion coefficient has a low lower limit value and high resolution.

关 键 词：高密度辐照 测量 辐射计 转化系数 

分 类 号：TK519[动力工程及工程热物理—热能工程]