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Nowadays, biomass or more precisely biofuel is more and more being exploited as a substitute for fossil fuels for heating as well as for example for heating a drying environment. This contribution focuses on assessing a heat source by combusting various types of solid biofuels. It is a boiler VIGAS 25 with AK 2000 regulation for heating a family house. Gaseous emissions were measured using a device TESTO 330-2LL. Firewood, peat briquettes, bark briquettes and hardwood briquettes were burnt. Results of experimental measurements concerning the production of gaseous emissions are processed in tables and graphs depending on boiler performance and combustion time.

El objetivo del presente trabajo es caracterizar cuali-cuantitativamente el registro antracológico del sitio arqueológico Arroyo Malo 3, que se emplaza en el valle del río Atuel, Mendoza, y cuya secuencia temporal comprende desde el Holoceno Temprano hasta el Holoceno Tardío. Se pretende establecer si el proceso de intensificación propuesto para los últimos 2200 años de ocupación humana de la región se ve reflejado, de alguna manera u otra, en el registro de uso combustible de las especies leñosas de la zona. De los 6650 carbones de madera recuperados de la cuadrícula B -1 del sitio, se seleccionó una submuestra por cada uno de los 40 niveles excavados. En total se analizaron 701 carbones. Éstos fueron identificados mediante comparación con la colección de referencia elaborada previamente para la zona por los autores. Se identificaron representantes de los siguientes géneros: Adesmia, Anarthrophyllum, Berberis, Colliguaja, Chusquea, Chuquiraga, O chetophila, Ephedra, Junellia, Lycium, Mulinun, Schinus, Senna y Prosopis. Los resultados muestran cambios en cuanto a presencia/ausencia y frecuencia relativa de los distintos géneros a los largo del tiempo, que tienden hacia una mayor diversificación taxonómica, e incluso incorporación de maderas alóctonas (i.e. Chusquea), hacia el Holoceno Tardío. The objective of the present paper is to characterize quali-quantitatively the anthracological record of the archaeological site Arroyo Malo 3, located in the valley of the Atuel river, Mendoza, whose temporal sequence comprises from the Early to the Late Holocene. we intend to establish if the intensification process proposed for the last 2200 years of the human occupation of the region is refected, from one or another manner, in the frewood record of the woody plants of the area. From the 6650 wood charcoal remains recovered from the B-1 grid of the site, one subsample of each of the 40 archaeological levels excavated was selected. A total of 701 remains was analysed. Charcoal was identifed by comparison with the reference collection previously made by the authors for the area. The following taxa were identifed: Adesmia, Anarthrophyllum, Berberis, Colliguaja Chusquea, Chuquiraga, Ochetophila, Ephedra, Junellia, Lycium, Mulinun, Schinus, Senna and Prosopis. Results showed changes in presence/absence and relative frequence values of the different genera along the temporal sequence of the site, which tend towards a taxonomical diversification, and also to the incorporation of foreign wood (i.e. Chusquea), during the late Holocene.