| Issue |
J. Phys. IV France
Volume 09, Number PR3, March 1999
Proceedings of the 9th SolarPACES International Symposium on Solar Thermal Concentrating TechnologiesSTCT 9 |
|
|---|---|---|
| Page(s) | Pr3-367 - Pr3-372 | |
| DOI | https://doi.org/10.1051/jp4:1999357 | |
Proceedings of the 9th SolarPACES International Symposium on Solar Thermal Concentrating Technologies
STCT 9
J. Phys. IV France 09 (1999) Pr3-367-Pr3-372
DOI: 10.1051/jp4:1999357
1 Laboratoire des Sciences du Génie Chimique, LSGC-CNRS-ENSIC-INPL, 1 rue Grandville, BP. 451, 54001 Nancy cedex, France
2 Institut de Science et de Génie des Matériaux et Procédés, IMP-CNRS, avenue du Pr. Trombe, BP. 5, Odeillo, 66125 Font-Romeu cedex, France
© EDP Sciences 1999
STCT 9
J. Phys. IV France 09 (1999) Pr3-367-Pr3-372
DOI: 10.1051/jp4:1999357
Solar flash pyrolysis of biomass direct measurement of the optical properties of biomass components
O. Boutin1, J. Lédé1, G. Olalde2 and A. Ferriere21 Laboratoire des Sciences du Génie Chimique, LSGC-CNRS-ENSIC-INPL, 1 rue Grandville, BP. 451, 54001 Nancy cedex, France
2 Institut de Science et de Génie des Matériaux et Procédés, IMP-CNRS, avenue du Pr. Trombe, BP. 5, Odeillo, 66125 Font-Romeu cedex, France
Abstract
This paper reports some results of experiments made to determine optical properties of the components of biomass, mainly cellulose. Indeed, cellulose is a highly reflecting and weakly absorbing (semi transparent) material and in some experiments, a concentrated radiation is used (from solar furnaces for instance). The reflectivity is determined with a commercial reflectometer. About 85% of the incident flux is reflected by a pure cellulose pressed pellet. The subduing factor is determined with a specific experimental apparatus using optical fibers. For cellulose, about 80% of the flux which is not reflected by the surface of the pellet is absorbed after 10-3 m. This subduing factor can be well represented by an exponential law.
© EDP Sciences 1999