TY - JOUR
TI - Heat transfer performance of an oil jet impinging on a downward-facing stainless steel plate
AU - Issa Roy J
JN - Thermal Science
PY - 2011
VL - 15
IS - 2
SP - 397
EP - 408
PT - Article
AB - An experimental study is carried out for the quenching of a stainless steel  plate using a single oil jet impinging on the bottom surface of the plate.  The objective of this study is to investigate the effect of the oil jet flow  operating conditions onto the heat transfer effectiveness when the plate is  heated to temperatures ranging from around 115 to 630°C, and the oil is  heated to temperatures ranging from 60 to 75°C. Tests are conducted on the  oil at various temperatures to determine its viscosity. Experiments are  conducted for nozzle exit flow rates ranging from 113 to 381 ml/min, oil jet  pressures from 3.1 to 12 psi, and nozzle-to-plate surface distances of 0.6  and 1 cm. The variation of the oil heat flux and heat transfer coefficient  with the surface temperature for the different quenching parameters is  calculated from the acquired temperature data. Tests results show the oil  heat transfer effectiveness keeps increasing for increasing plate  temperature. Oil jet pressure is shown to have a considerable effect on the  oil heat transfer, while the nozzle-to-plate surface distance is shown to  have a lesser effect. The results of this study shall lead to a better  understanding of the parameters that play an important role in oil quenching  for applications that are of interest to the metal process industry.