Figure 6From: Effect of nanoparticles on heat capacity of nanofluids based on molten salts as PCM for thermal energy storageSEM micrographs of nanofluids based on NaNO 3 -KNO 3 with 0.5 wt.% (a,b,c,d), 1.0 wt.% (e,f,g,h), and 1.5 wt% (i,j,k,l) of nanoparticles. silica (a,e,i), alumina (b,f,j), titania (c,g,k) and alumina-silica nanoparticles (d,h,l).Back to article page