Radiative properties of ash and slag. Final report
The objective of this program has been to make laboratory measurements of the radiative properties of ash and slag deposits that have been extracted from combustion devices. The program has resuited in measurements of radiative properlies of materials at high temperatures made by a technique employing a sample heatng deVice that is coupled to a FT-IR spectrometer to measure emission, directional-hemispherical transmission, and directional-hemispherical reflection of a sample. By this technique, the temperature at the measurement point and the spectral emittance (emissivity) of the surface are both obtained. These measurements are then related to the physical and chemical properties of the surface to determine what controls the radiative properlies. The measurements have shown that the physical state of a deposit (i.e. fused, sintered or packed particles) greatly influence the measured spectral emittance. The main accomplishments of the program are as follows: (1) Demonstration of measurement technique validation. (2) Measurements of spectral emittance for deposit samples as a function of temperature and morphology. (3) Accurate calculations of the optical properties of smooth and sintered surfaces based on the material`s complex Index of refraction and the surface morphology.
- Research Organization:
- Advanced Fuel Research, Inc., East Hartford, CT (United States)
- Sponsoring Organization:
- USDOE, Washington, DC (United States)
- DOE Contract Number:
- AC22-87PC79901
- OSTI ID:
- 10122744
- Report Number(s):
- DOE/PC/79901-T10; ON: DE93006157
- Resource Relation:
- Other Information: PBD: Oct 1990
- Country of Publication:
- United States
- Language:
- English
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