Temperature distribution in lumber during impingement drying

Autor: John N. Beard, B. A. Adesanya, H. N. Rosen
Rok vydání: 1985
Předmět:
Zdroj: Wood Science and Technology. 19:277-286
ISSN: 1432-5225
0043-7719
DOI: 10.1007/bf00392056
Popis: Techniques are described for measuring the surface temperature of drying lumber with a radiation thermometer and for measuring interior temperatures at various depths with 30-gauge (0.25 mm) thermocouples. Experimental results with 52 mm thick yellow poplar boards dried above 100°C with impinging jets of hot air over a range of temperatures are presented showing surface and interior temperatures and moisture content as functions of drying time. Surface temperatures rose rapidly to within 10 to 30° of dry-bulb temperature, and interior temperature at the center of the boards remained near 100°C until the boards dropped below 10 percent moisture content.
Databáze: OpenAIRE