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Showing 1 to 5 of 5 for “"cooling fans"”.
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Optimization of Active Noise Control for Small Axial Cooling Fans
… to attenuate tonal noise radiated by small axial cooling fans, such as those found in desktop computers. One such control system reduced noise levels of a baffled 80-mm fan in the free field with four small loudspeakers surrounding the fan. Due to industry specified spatial constraints, a smaller …
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Development of a virtual test facility for axial flow cooling fans
Axial flow cooling fans are critical components in cooling systems for major industries like electricity generation, mineral processing and manufacturing. Efficient fans limit power consumption in these industries and consequently reduce operating costs. Due to their size, diameter sometimes …
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Feedback Applications in Active Noise Control for Small Axial Cooling Fans
… attenuating broadband noise from a small axial cooling fan. Such fans are used to maintain thermal stability inside of computers, projectors, and other office equipment and home appliances. The type of low-level noise radiated from axial cooling fans has been classified as harmful to …
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Optimization of Control Source and Error Sensor Locations in Free Field Active Noise Control
… noise control (ANC) can be applied to axial cooling fans. Optimization of the control source and error sensor placement is desired to maximize the attenuation using ANC. A genetic algorithm was developed to find the optimal placement of control sources for a given primary source. The optimal …
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Error Sensor Placement for Active Control of an Axial Cooling Fan
… achievements in active noise control (ANC) for cooling fans have used near-field error sensors whose locations are determined according to a theoretical condition of minimized sound power. A theoretical point source model, based on the condition previously stated, reveals the location of …