A novel heat transfer model of biomass briquettes based on secondary development in EDEM

Yudi Li¹, Hongguang Xu¹, Chenghu Jing¹, Jihai Jiang¹, Xuyan Hou¹

¹Harbin Institute of Technology, China

Abstraction

Temperature is important to the quality of biomass briquettes in hot-forming. In this paper, a heat transfer model based on plastic deformation was constructed in the EDEM by discrete element method at the grain scale. The prediction performance of the model was validated by comparing the temperature evolution in simulation with the experimental values. The influences of process parameters on heat transfer including the amount of compression, heating temperature, diameter of mold, moisture content and dwell time were discussed. The rate of heat transfer increased with the briquetting conditions of higher compression, higher heating temperature, lower diameter of the mold, higher moisture content and longer dwell time. It is expected that the new heat transfer model will help in getting enhanced briquettes quality in addition to improved utilization of biomass energy such as bio-refinery, biogasification and other biotechnologies.

Results

Based on the API class IPluginContactModel, a new contact model subclass is capable of inheriting the corresponding functions of the base class. Hence, it has become necessary to carry out re-development in EDEM by writing programs of the API interface compiled in Windows platform.