Change of surface temperature and far-infrared emissivity in ceramics manufactured from a board mixed with sawdust and mandarin peel

The aim of the study is to use the by-products sawdust, formed during sawing and mandarin peel which are agricultural by products. The boards were manufactured by mixing the sawdust and mandarin peel at different mixing ratio and density. In terms of changes in surface temperature of ceramics, we could found that the velocity was fast in the early time of heat transfer until 10 minutes and after that the velocity increased but not very fast. At the elapsed time of 30 minutes, the surface temperature of ceramics increased with the carbonization temperature and rate of mandarin peel addition did not influence the surface temperature. Far-infrared emissivity had no constant tendency in rate of mandarin peel addition, it decreased with increase of carbonization temperature.