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  • Open Access

    PROCEEDINGS

    The Effect of Heating Rate on Sintering Mechanism of Alumina Nanoparticles

    Dangqiang Wang1, Hai Mei1,*

    The International Conference on Computational & Experimental Engineering and Sciences, Vol.27, No.1, pp. 1-1, 2023, DOI:10.32604/icces.2023.09455

    Abstract The densification process of sintered alumina is mainly controlled by surface, lattice, and interface diffusion, and many experimental researches show that heating rate can affect the transfer of matter. Thus, to further reveal the effect of heating rate on sintering mechanism of alumina nanoparticle, molecular dynamic simulations were performed at five different heating rates to examine the migration of atoms and evolution of microstructure in heating stage. Results show that the sintering process of heating is a typical thermal activation process. High displacement response temperature is caused by high heating rate, which results in the More >

  • Open Access

    ARTICLE

    HEAT AND MASS TRANSFER IN DRYING OF CARROT BY RADIO FREQUENCY ASSISTED HEAT PUMP DRYING

    Le Anh Duca , Pham Van Kienb,*, Nguyen Thanh Tanb, Doan Thanh Sonb, Nhanh Van Nguyenc, Ngoc Xuan Nguyend

    Frontiers in Heat and Mass Transfer, Vol.20, pp. 1-6, 2023, DOI:10.5098/hmt.20.25

    Abstract This study focused on the heat and mass transfer in radio (RF) assisted heat pump (HP) drying of carrots. The experimental drying of carrot by RF assisted HP drying method was conducted to evaluate the effect of RF power on drying efficiency including drying rate and heating rate. The input drying parameters were drying air temperature of 45oC, drying air velocity of 2.5 m/s and RF power of 0, 0.5 and 1.5 kW, in which, RF power of 0 was corresponding to HP drying method. The experimental drying results showed that in RF assisted HP… More >

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