The Journal of Science and Engineering Applications (JSEA)

Abstract

  this research, a very complete experimental study of forced convection heat transfer from a horizontal cylinder in cross-flow air is reported. The experimental setup included a horizontally mounted metallic cylinder heated internally by the controlled electric power input. A variable speed blower was used to provide forced air flow so that the air velocity could be adjusted very accurately. Surface and environmental temperatures of the cylinder were monitored by calibrated thermocouples as soon as steady-state was attained under every operating condition. The convective heat transfer coefficient was calculated using the measured temperature differences between the cylinder surface and ambient air and the information about the geometry of the cylinder. Surface temperature, temperature difference, and heat transfer coefficient were studied systematically to observe the influence of air velocity.