Abstract
During steel production cooling of hot metallic surface is highly crucial step which determines the various properties of the steel such as strength, surface hardness etc. The cooling rate influence the mechanical properties as well as determine the length of the runout table at the time of planning phase. Various research is going on to enhance the properties of steel so as to reduce the production cost. A portable runout table was design and developed in the laboratory for movement of the hot metal surface. Three different nanoparticles such as Al2O3, TiO2 and CuO with base fluid water is used as coolant in the current investigation. The influence of various controlling parameters such as particle weight concentration, strip velocity, target distance, air and liquid pressure on impingement cooling of flat metal surfaces was investigated. The results were compared with pure water with same parametric condition. The results revealed that the nanofluids provides better cooling rate as compared to the water. For 0.05 wt% particle concentration, TiO2 nano particle exhibits higher heat transfer ability for particular experimental condition.
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