Taking the heat off digital broadcast filters

Using electro-actuated nanofluids may help to efficiently reduce temperatures of high power digital broadcast filters.

The project investigates the temperature distribution and heat dissipation for a broadcast filter, which limits the average input power handling in digital television transmitters filters.

A novel technique utilising an electro-dynamically controlled nanofluid is explored to enhance the cooling efficiency. By reducing the temperature on the external surface of the filter, the size and cost of both the filter and cooling system can be considerably reduced.

Occupational health and safety issues will also be avoided, as the maximum allowable temperature rise on the external surface of a filter is generally 40 °C above the ambient temperature.

The physical size of the filter can also be minimised, resulting in a more cost-competitive product.

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