| Jet impingement heat transfer for a stationary plate is investigated to provide a better understanding of the cooling process that occurs in a hot steel mill. Various effects on heat transfer are presented, some of which are jet velocity, water temperature, nozzle-to-surface spacing, wall superheat, nozzle diameter, planar versus circular jets, nozzle configuration, and surface oxidation. Correlations presented by other researchers, which are used to determine the heat flux within the single-phase forced convection, nucleate boiling, and critical heat flux (CHF) regimes, were compared with experimental data obtained from the University of British Columbia (UBC) facility for a circular jet. Only one single-phase forced convection correlation was found to match well with the data. All of the nucleate boiling correlations reviewed highly overestimated the heat flux data. A few CHF correlations can be used to accurately represent the experimental data. A new heat transfer correlation was developed, which can be used to ascertain the heat flux within the single-phase forced convection and nucleate boiling regimes. |
