Wzorek Małgorzata, Król Anna, Junga Robert, Małecka Joanna, Yilmaz Ersel, Kolasa-Więcek Alicja
Department of Environmental and Process Engineering, Opole University of Technology, Mikołajczyka Str. 5, 45-271, Opole, Poland.
Department of Thermal Engineering and Industrial Facilities, Opole University of Technology, Mikołajczyka Str. 5, 45-271, Opole, Poland.
Sci Rep. 2024 Jul 2;14(1):15192. doi: 10.1038/s41598-024-66118-6.
This article examines the effects of different storage conditions on selected physicochemical properties of three types of agro-biomass pellets: sunflower husks, wheat straw and hemp hurds, and wood pellets. The tests were carried out in a climatic chamber, which allows simulation of real storage conditions, i.e. conditions with high air humidity and variable (±) ambient air temperatures. The results showed higher degradability of agro-biomass pellets compared to woody biomass. The pellets degraded to a less extent at varying ± temperatures than at high humidity (90% RH). After complete moisture saturation, durability decreases for agro-pellets by an average of 9%, while after freezing and defreezing for sunflower husk pellets and woody pellets durability decreases by 2%, and for hemp hurd pellets by 11%. In contrast, strength-by-dropping index for agro-pellets decreased by 20% after being in the environment (30 °C and 90%RH) and 15% under varying temperature conditions. No change in the energy parameters of all pellets in the dry matter was noted. On the other hand, an increase in the moisture content of pellets when they are stored under different environmental conditions results in a decrease in calorific value.
本文研究了不同储存条件对三种农业生物质颗粒（向日葵壳、小麦秸秆、大麻秸秆）以及木质颗粒所选物理化学性质的影响。试验在气候箱中进行，该气候箱能够模拟实际储存条件，即高空气湿度和可变（±）环境空气温度的条件。结果表明，与木质生物质相比，农业生物质颗粒具有更高的降解性。颗粒在温度变化（±）时的降解程度低于在高湿度（90%相对湿度）时的降解程度。完全水分饱和后，农业颗粒的耐久性平均降低9%，而向日葵壳颗粒和木质颗粒经过冷冻和解冻后耐久性降低2%，大麻秸秆颗粒降低11%。相比之下，农业颗粒在环境（30°C和90%相对湿度）中放置后，其落锤强度指数降低20%，在温度变化条件下降低15%。所有颗粒干物质的能量参数未发现变化。另一方面，颗粒在不同环境条件下储存时，其水分含量增加会导致热值降低。
