燃煤积灰法向光谱发射率的测量
摘要：燃煤积灰是超超临界锅炉热量传递链上重要的一环，它的辐射特性对于准确描述热量在锅炉内的传递非常重要。基于傅里叶红外光谱仪（Fourier transform infrared spectroscopy，FTIR）建立了高温法向光谱发射率测量平台。平台测量波长范围3~14μm，温度范围373~873K，采用标准黑漆样片对平台的测量结果进行了校准，对人工积灰样品光谱发射率开展了实验测量。发现人工灰样发射率具有显著的光谱分布特性，在短波段较低而长波段较高；随着温度的上升，人工积灰光谱发射率逐渐上升；随着Fe2O3含量的上升，整体人工灰样的光谱发射率在全光谱范围内上升。
Abstract:Coal ash deposit is important to the heat transfer of ultra-supercritical boilers. Its radiation characteristics are very important for accurately describing the heat transfer in the boiler. Based on the Fourier transform infrared spectroscopy (FTIR), a high-temperature normal spectral emissivity measurement platform was established. The platform can measure radiation of 3-14μm wavelengths and 373-873K temperatures. The measurement results for the platform were calibrated with standard samples. The emissivity of artificial ash samples was measured. The artificial ash emissivity has a remarkable spectral distribution characteristic, which is lower in the short wavelength and higher in the long wavelength. As the temperature rises, the artificial ash spectral emissivity increases. As the Fe2O3 content increases, the spectral emissivity of the overall artificial ash sample rises in the full spectrum.
标题：燃煤积灰法向光谱发射率的测量
title:Coal Ash Deposit Normal Spectral Emissivity Measurement
作者：柴一占,杨震,段远源
authors:Yizhan CHAI,Zhen YANG,Yuanyuan DUAN
关键词：燃煤积灰,超超临界锅炉,光谱发射率,傅里叶红外光谱仪,
keywords:coal ash deposit,ultra-supercritical boilers,spectral emissivity,FTIR,
发表日期：2019-08-31
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