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Thermal Diffusivity Behavior of Guadua angustifolia Kunth as a Function of Culm Zone and Moisture Content

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Author Affiliations

  • 1Laboratorio de Optoelectrónica, Universidad del Quindío Apdo. Postal 2639 Armenia, COLOMBIA
  • 2 Centro de Investigación en Ciencia Aplicada y Tecnología Avanzada del I.P.N, Unidad Legaria. 694, Col. Irrigación, D.F, MÉXICO

Res.J.chem.sci., Volume 1, Issue (9), Pages 17-23, December,18 (2011)

Abstract

Guadua angustifolia Kunth is a giant graminea native of Central and South America. This plant captures a lot of carbon dioxide and protects hydrographic watersheds. For this reason, the growing of Guadua a. is considered environmentally favorable. Furthermore, the use of this forest resource as a structural and decorative element for building has been promoting recently due to its special physical characteristics. However, nowadays much of the production chain is inefficiently oriented by empirical and traditional knowledge. In particular, the drying process exerts influence on cracks that disqualifies the material for some artistic and industrial applications. Thermal characterization allows making models for drying according to particular characteristics of the material. Knowledge of thermal properties is also important for applications in which heat transfer can play an important role, such as in buildings. In this work, thermal diffusivity was measured as a function of the moisture content obtained during the drying process in samples of Guadua a. taking from the bottom, middle and top culm regions of the plants. Measurements were performed using the photoacoustic technique. Results show that thermal diffusivity increases with the moisture content but its value becomes the same along the bamboo. This behavior is highly correlated with the morpho-anatomical characteristics of the plant, which were determined through scanning electron microscopy.

References

  1. Chauhan L., Dhawan S., Gupta S., Effect of age on anatomical and physicomechanical properties of three Indian bamboo species, J. of the TDA, 46, 11-7 (2000)
  2. Lakkad S.C., Patel J.M., Mechanical properties of bamboo, a natural composite, Fiber Sci. Technol, 14, 319-322 (1980)
  3. Chung K.F., Yu W.K., Mechanical properties of structural bamboo for bamboo Scaffoldings, Eng. Struct., 24, 429-442 (2002)
  4. Ngohe-Ekam P.S., Meukam P., Menguy G., Girard P., Thermophysical characterization of tropical wood used as building materials: With respect to the basal density, Constr. Build. Mater, 20, 929–938 (2006)
  5. Carslaw H.S., Jaeger J.C., Conduction of Heat in Solids. Clarendon Press, Oxford (1986)
  6. Almond D.P., Patel P.M., Photothermal Sciences and Techniques, Chapman &Hall, London (1996)
  7. Rosencwaig A., Photoacoustic spectroscopy of solids, Phys. Today, 28, 23-28 (1975)
  8. Salazar A. On thermal diffusivity, Eur. J. Phys., 24, 351-358 (2003)
  9. Marin E. The role of thermal properties in periodic time-varying phenomena, Eur. J. Phys., 28, 429-445 (2007)
  10. Chen G.Q., Hua Y.K., A study of new bamboo-based composite panels (II), J. Bamboo Res., 10, 72-78 (1991)
  11. Abd. Latif M., Ashaari A., Jamaludin K, Mohd.Zin J., Effects of anatomical characteristics on the physical and mechanical properties of Bambusa bluemeana, J. Tropical Forest Sci., 159-170 (1993)
  12. Rosencwaig A, Gersho A., Theory of the photoacoustic effect with solids, J. Appl. Phys., 47, 64-69 (1976)
  13. Mansanares A.M., Bento A.C., Vargas H., Leite N.F., Miranda L.C.M., Photoacoustic measurement of the thermal properties of two-layer systems, Phys. Rev. B, 42, 4477-4487 (1990)
  14. Bogner A., Jouneau P.H., Thollet G., Basset D., Gauthier C., History of scanning electron microscopy developments: Towards ‘‘wet-STEM’’ imaging, Micron., 38, 390–401 (2007)
  15. Ferreira S.O., Ying C., Bandera I.N., Vargas H., Miranda LCM., Photoacoustic Measurement of the Thermal Diffusivity of Pb1-xSnxTe Alloys, Phys. Rev. B, 39, 1967-1970 (1998)
  16. Zárate-Rincón F., Gordillo-Delgado F., Bedoya-Pérez AF, Montoya Arango JA, Ariza-Calderón H. Revista Colombiana de Física (In Spanish). Forthcoming (2012)
  17. Choy T.C., Effective Medium Theory: Principles and Applications, Clarendon Press, Oxford (1999)
  18. Balderas-López J.A., Tomas S.A., Vargas H., Olalde-Portugal V., Baquero R., Delgadillo I., et al., Photoacoustic thermal characterization of wood, Forest Prod. J., 46, 84-89 (1996)
  19. Touloukian Y.S., Powell R.W., Ho C.Y., Nicolaou M.C., Thermal diffusivity, Vol. 10 of Thermophysical Properties of Matter: The TPRC Data Series, IFI/Plenum, New York (1973)