Visualization Research on Heat Pipe Radiator in Cooling Electronic Apparatus with High Heat Flux

In this paper, the heat transfer characters of heat pipe radiator for cooling electronic device with high heat flux were investigated by visualization method. The surface temperature of heat pipe radiator was measured at different heat flux and constant fan speed of 0.7m/s, and the results show that the surface temperature of electronic apparatus is below 75°C for the heat flux 8W/cm2 at constant fan speed of 0.7m/s; The error in measured value using thermocouple and technique of infrared thermography was analyzed based on the principles of temperature measurement of infrared thermal imager.