The investigation focused on obtaining experimental results from the self-heating properties of different softwood samples during lab-scale storage. The samples investigated were a mixture of dried soft wood sawdust, softwood pellets 8 mm in diameter, and aged softwood sawdust stored outdoors for three months. Isothermal calorimetry was used to measure the heat released from the biomass samples and assess the contribution to self-heating during storage. Softwood samples were stored at 20 °C, 50 °C, 55 °C and 60 °C, and the metals manganese, copper and iron were added as a water solution to investigate if the presence of metals would increase the risk of self-heating. For most sample series, the highest levels of heat release were found after approximately 10 days of storage; sample series stored at 50 °C displayed the highest levels. The addition of copper resulted in levels of heat release 135% higher than samples without metal added.

这项研究的重点是在实验室规模的存储过程中，从不同软木样品的自热特性获得实验结果。调查的样品是干燥的软木锯末，直径为8 mm的软木屑和在户外存放三个月的陈年软木锯末的混合物。等温量热法用于测量从生物质样品释放的热量，并评估在存储过程中对自热的贡献。软木样品分别存储在20°C，50°C，55°C和60°C下，并以水溶液形式添加金属锰，铜和铁，以研究金属的存在是否会增加自热的风险。对于大多数样品系列，在储存约10天后发现了最高的放热水平。在50°C下存储的样品系列显示出最高水平。