EVOLUTION OF TEMPERATURE AND MOISTURE PROFILES OF WOOD EXPOSED TO INFRARED RADIATION

作者: Erzsébet Cserta , Gergely Hegedűs , Róbert Németh

DOI: 10.15376/BIORES.7.4.5304-5311

关键词:

摘要: In this article we studied the mechanism of wood drying using infrared (IR) heat transfer. Norway spruce (Picea abies (L.) Karst.) samples 50 mm and 200 thickness were exposed to IR radiation, temperature moisture profiles recorded at surface core under controlled experimental conditions. It is proposed that transport in during governed by osmotic effects. Based on such a hypothesis, stagnation was explained lower localized pressure core, which reduced boiling point water. As drawn away due osmosis from central region, it cannot fill empty lumens again; therefore, decreases locally. The evaporation internal brought about partial vacuum resulting disappearance liquid

参考文章(9)
Erzsebet Cserta, Robert Nemeth, Gergely Hegedűs, DRYING PROCESS IN NORWAY SPRUCE WOOD EXPOSED TO INFRARED RADIATION Bioresources. ,vol. 6, pp. 4181- 4189 ,(2011) , 10.15376/BIORES.6.4.4181-4189
Hans Björk, Anders Rasmuson, Moisture equilibrium of wood and bark chips in superheated steam. Fuel. ,vol. 74, pp. 1887- 1890 ,(1995) , 10.1016/0016-2361(95)80024-C
A. Erriguible, P. Bernada, F. Couture, M.-A. Roques, Simulation of vacuum drying by coupling models Chemical Engineering and Processing. ,vol. 46, pp. 1274- 1285 ,(2007) , 10.1016/J.CEP.2006.10.011
Christian Fyhr, Anders Rasmuson, Some aspects of the modelling of wood chips drying in superheated steam International Journal of Heat and Mass Transfer. ,vol. 40, pp. 2825- 2842 ,(1997) , 10.1016/S0017-9310(96)00340-7
Sandor Poncsak, Duygu Kocaefe, Ramdane Younsi, Yasar Kocaefe, Louis Gastonguay, Thermal treatment of electrical poles Wood Science and Technology. ,vol. 43, pp. 471- 486 ,(2009) , 10.1007/S00226-009-0243-8
Pang Shusheng, R.B. Keey, T.A.G. Langrish, Modelling the temperature profiles within boards during the high-temperature drying of Pinus radiata timber: the influence of airflow reversals International Journal of Heat and Mass Transfer. ,vol. 38, pp. 189- 205 ,(1995) , 10.1016/0017-9310(95)90001-2
M. Ståhl, K. Granström, J. Berghel, R. Renström, Industrial processes for biomass drying and their effects on the quality properties of wood pellets Biomass & Bioenergy. ,vol. 27, pp. 621- 628 ,(2004) , 10.1016/J.BIOMBIOE.2003.08.019