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Energy absorption performances of silicon carbide particles during microwave heating process
Chemical Engineering and Processing: Process Intensification  (IF4.237),  Pub Date : 2022-01-15, DOI: 10.1016/j.cep.2022.108796
Cunfeng Ke, Tao Liu, Yaning Zhang, Qingang Xiong

In this study, energy absorption performances of SiC particles during microwave heating process were analyzed, and effects of SiC loading (20, 25, 30, 35, and 40 g), microwave power (300, 350, 400, 450, and 500 W) and reactor volume (50, 100, 150, 200, and 250 mL) were investigated. The results show that when the SiC is heated to 200 °C and loading increases from 20 g to 40 g, average heating rate decreases and then increases in the range of 0.36 ∼ 0.86 °C/s whereas energy absorption efficiency increases and then decreases in the range of 1.49% ∼ 15.57%. When microwave power increases from 300 W to 500 W, average heating rate increases from 0.89 °C/s to 7.08 °C/s whereas energy absorption efficiency increases and then decreases in the range of 4.71% ∼ 37.38%. When reactor volume increases from 50 mL to 250 mL, average heating rate decreases from 3.37 °C/s to 0.65 °C/s whereas energy absorption efficiency increases and then decreases in the range of 5.70% ∼ 35.38%. The maximum energy absorption efficiency of 37.38% was observed at the SiC loading of 30 g, microwave power of 350 W, and reactor volume of 50 mL.