高温颗粒光谱发射率的测量  

Spectral Emissivity Measurement of High-temperature Particles

作　　者：黄冠 杨理理[1] 彭涛[1] HUANG Guan;YANG Lili;PENG Tao(Nanjing University of Aeronautics and Astronautics,School of Energy and Power,Nanjing 210016,China)

机构地区：[1]南京航空航天大学能源与动力学院,南京210016

出　　处：《工程热物理学报》2023年第7期1982-1986,共5页Journal of Engineering Thermophysics

基　　金：国家重点研发计划项目(No.2018YFB1501001)。

摘　　要：聚光太阳能发电系统已经发展到以固体颗粒作为集热工质的第三代,作为吸收和储存热量的固体颗粒,其高温光谱发射率是一个十分重要的物性参数,在集热器的换热计算和效率评估等方面有着重要影响。本文基于光谱发射率测量方法中的能量法,利用傅里叶红外光谱仪(FTIR)和黑体炉等设备搭建的高温单颗粒光谱发射率测量系统,获得了3~5mm直径黄铜颗粒的高温光谱发射特性。Concentrating solar power systems have developed to the third generation using solid particles as heat collectors.Solid particles absorb and store heat.Their high-temperature spectral emissivity is a significant physical property parameter for the heat transfer calculation and efficiency evaluation of collectors.In this study,based on the energy method for spectral emissivity measurement,a high-temperature single-particle spectral emissivity measurement system is built using Fourier-transform infrared spectroscopy(FTIR)and blackbody furnace,which can take into account the emissivity measurement of bulk materials simultaneously.High-temperature spectral emissivity data for 3~5 mm diameter brass particles were obtained based on the measurements with this test system.

关 键 词：光谱发射率 聚光太阳能发电 颗粒 

分 类 号：TK123[动力工程及工程热物理—工程热物理]