| dc.description.abstract | Power electronic products continuously strive for high power density designs;
however, not every product can employ liquid cooling solutions. In practical
applications, factors such as reliability, ease of maintenance, and customer
requirements must be considered. Therefore, optimizing air-cooled heat sinks is
necessary from a practical standpoint. Additionally, for high-power models,
weight and cost are often critical design considerations. This study heat sinks
within fixed dimensions. The overall height is 90mm, the total width is 204mm,
and the length is 90mm. Each heat source generates 720W, with two heat sources
in. The heat dissipation module with two 9038 fans. Within the limited space, the
heat sink design is optimized by adjusting the geometric parameters and
inclination angles of the fins. The results show that with heat pipes, changing the
base thickness of the heat sinks has no significant impact on performance. When
the fin spacing is fixed, increasing the thickness of the heat sinks significantly
improves performance. Under conditions with variable fins, the optimal ratio of
fin spacing to fin thickness is between 2 and 3. The pre-angled fins significantly
improve the fan pressure drop, with characteristics close to those of non-angled
fins at a 45-degree angle. The post-angled fins tend to increase the system pressure
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drop, thereby affecting the overall airflow of the fan, and provide no significant
benefit to performance. The mid-angled fins slightly increase the pressure drop
but are expected to improve the temperature rise of the heat sinks. The optimized
parameters proposed in this study improve performance by approximately
57%.and keep the same temperature. | en_US |