Abstract
The number of thin natural cooling equipment has increased in recent years. In a study about the natural convection of electrical equipment, it is important to measure the natural convection velocity. However, the internal flow of natural cooling equipment is complicated, and the behavior is not understood. In this study, the velocity distributions in a transparent model of thin natural cooling electrical equipment were measured using a PFV. Temperature increase of a heating component was also measured as a function of a casing clearance. It was found that the vertical velocity has a maximum at the center of the heater. Measured velocity profiles were compared with simulation results and the validity of the PIV measurement was confirmed.
