Abstract: This study developed an experimental methodology for measuring convective heat transfercoefficients using infrared thermography．The experiment employed 6061 aluminium alloy specimens，with high-emissivity black adhesive tape applied to the surface to mitigate infrared temperature measurement errors．By integrating steady-state and unsteady-state temperature field measurement techniques，the convective heat transfer coefficients under three flow conditions—natural convection (no wind)，forced convection (1．5 m/s，and 2．5 m/s wind speeds)—were quantitatively analysed． The experimental results demonstrated that:1)Surface treatment effect:The black adhesive tape increased surface emissivity from 0．856 to 0．987，significantly improving the measurement accuracy of the infrared thermal imager;2)Convective intensity influence:The convective heat transfer coefficient increased markedly with forced convection strength． Under natural convection，1．5 m/s，and 2．5 m/s wind speeds，the coefficients were 17．67 W/(m 2 ·K)，20．69 W/(m 2 ·K)，107．65 W/(m 2 ·K)，respectively，aligning with Newton＇s law of cooling．This experimental framework provides
an intuitive and advanced observational tool for heat transfer education．Through systematic analysis of heat
transfer mechanisms and engineering problem-solving，students gain a deeper understanding of convective heat
transfer principles，strengthen the application of theoretical knowledge to practical engineering scenarios，and
enhance their scientific research literacy and innovation capabilities．
卢坤标 , 胡旭波, 谭穗妍, 林 芳 . 基于红外热像仪的对流传热系数测量实验[J]. 大学物理实验, 2026, 39(2): 7-11.
LU Kunbiao , HU Xubo, TAN Suiyan, LIN Fang . An Experimental Methodology for Convective Heat Transfer Coefficient Determination Using Infrared Thermal Imaging#br#. Physical Experiment of College, 2026, 39(2): 7-11.
