Analysis of counter flow of corona wind for heat transfer enhancement

Insights into the specific heat capacity enhancement of ternary carbonate nanofluids with SiO2nanoparticles: the effect of change in the composition ratio

“…More importantly, it is worthy to note that the enhancement of the specic heat capacity of the TC nanouid with SiO 2 nanoparticles prepared at an evaporation temperature of 180 C was up to 113.7% at 540 C. Such a large enhancement of the specic heat capacity cannot be found in similar systems. [22][23][24] This cannot only be explained by the formation of nanostructures with a better dispersion of nanoparticles. It was reported that the composition ratio of the TC had a signicant inuence on their specic heat capacity.…”

“…17,18 To obtain molten salt nanouids with better dispersion homogeneity, various nanoparticles with different sizes and concentrations have been widely applied and investigated. [19][20][21][22][23][24] Lasfargues et al 22 obtained binary nitrate nanouids by a mechanical dispersion method and found an increase of 10.48% in the specic heat capacity of a binary nitrate with 0.1 wt% CuO nanoparticles (29 nm). By mixing SiO 2 nanoparticles (60 nm) with a ternary nitrate using a two-step solution method, the enhancement of the specic heat capacity was 13% and the optimal concentration of SiO 2 was 1 wt%.…”

“…By mixing SiO 2 nanoparticles (60 nm) with a ternary nitrate using a two-step solution method, the enhancement of the specic heat capacity was 13% and the optimal concentration of SiO 2 was 1 wt%. 23 Through the two-step solution method, Shin et al 24 prepared chloride salt eutectic nanouids and found that the enhancement of the specic heat capacity was 14.5% when adding 1 wt% SiO 2 with a 26 nm diameter. As shown above, the two-step solution method has been used more in the preparation of molten salt nanouids.…”

“…In the second step, the sample solutions were evaporated by a hot plate in most studies. 17,18,[23][24][25][26][27] Jo et al 26 reported that the specic heat capacity of binary carbonate eutectic-carbon nanotube nanouids increased linearly with the hotplate temperature. However, in Shin's study, 27 for Li 2 CO 3 -K 2 CO 3 eutectic salt nanouids with 1 wt% SiO 2 (10 nm), the average specic heat capacity of samples heated at 60 C was higher than that of samples boiled at 100 C. Explanation of the variation in the thermophysical properties of the different samples only referred to the amount of the agglomeration of the nanoparticles, as well as the formation of a compressed phase due to a different evaporation process.…”

Enhanced ionic wind generation by graphene for LED heat dissipation

“…Wang et al investigated the heat transfer enhancement by EHD in a double‐wall‐heated channel. Shinet al analyzed the counter flow of ionic wind for heat transfer enhancement. E et al studied the enhancement of microwave‐assisted regeneration in a wall‐flow diesel particulate filter based on field synergy theory.…”