Internal Temperature Distribution

Centum Communications Team

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SUMMARY

Thermal study to determine the internal distribution of components that ensures the operation of the equipment under extreme operating conditions. Due to the high dissipation values ​​of the equipment, as well as the strict aeronautical certification requirements, a good thermal design is required to ensure adequate temperature values ​​in critical components.

Thanks to thermal simulation it has been possible to compare different configurations of the equipment even before it is manufactured. CFD simulation is also capable of providing information on the operating temperature of electronic components under any ambient conditions. In addition, the fact of being able to visualize the internal distribution of temperatures greatly facilitates the analysis and improvement of the equipment.

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3D MODEL

The outer case of the equipment has a very good base thermal design. Since thanks to the external finning, the same equipment is acting as a heat sink.

After a first phase of improvement of the external cooling system, the interior of the equipment is accessed to optimize the distribution of internal components.

Due to the characteristics of the external ducting system, the equipment casing offers different convection values. This allows some room for improvement when it comes to establishing the layout of the electronic components.

RESULTS

EXTERNAL TEMPERATURE DISTRIBUTION

Each of the faces of the outer casing has different values ​​of thermal dissipation depending on the air conditions. Those finned areas in which the air accelerates to a greater extent, have greater cooling capacity.

In both cases, the upper face is the one with the highest rate of heat transmission to the outside. Therefore, it is recommended to position on it those critical components that require greater thermal dissipation.

EXTERNAL TEMPERATURE DISTRIBUTION

Each of the faces of the outer casing has different values ​​of thermal dissipation depending on the air conditions. Those finned areas in which the air accelerates to a greater extent, have greater cooling capacity.

In both cases, the upper face is the one with the highest rate of heat transmission to the outside. Therefore, it is recommended to position on it those critical components that require greater thermal dissipation.

INTERNAL TEMPERATURE DISTRIBUTION

The internal distribution does have an influence on the maximum temperature values ​​reached in the critical components. However, the total heat output dissipated is still limited by external convection values ​​and ambient operating conditions.

The fact of having interior ventilation also helps to improve the rate of heat transmission to the outside. But above all it serves to dissipate the heat accumulated in all those components that do not have direct transmission by conduction to the equipment casing.

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