A dryer oven used in malting grain produced noise levels of up to 95 dB(A).
Especially audible was a low frequency ‘booming’ sound.
A very lean air to fuel ratio at low firing was causing flame instability that developed into an oscillation at the resonant frequency of the tube.
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A motor controlled valve, previously used for welding fume extraction was adapted and fitted to the combustion fan intake.
When triggered it reduced air flow at low loads, improving combustion.
For a cost of just £100 per unit, the 82 Hz booming sound was reduced by 21 dB.
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Industrial Noise and Vibration Centre (INVC) Ltd provide a comprehensive Noise and Vibration solution service. This includes Noise Assessments, Vibration Assessments, Control Solutions, HAV training and Noise Competency training.
Gill Cussons is a Senior Acoustic Engineering Consultant for INVC.
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When it comes to finding solutions for vibration issues or noise control in the workplace, Industrial Noise and Vibration Centre (INVC) Ltd. is one of the leading companies in the UK.
In addition to managing Noise and Vibration Solutions, Gill Cussons is a Senior Acoustic Consultant and Company Director at INVC. This dual role gives Gill a very unique and expert perspective on noise and vibration issues across a wide range of industries and sectors.
Using elegant engineering techniques, INVC has a robust reputation when it comes to solving your noise and vibration issues. INVC can provide solutions to your problems and provide training for your company too.
What’s more, the INVC case studies contained within these pages will show you how improvements made to your machinery relating to sound and vibration issues can positively affect your productivity - It pays not to overlook health and safety problems.
If you’re interested in finding out more about INVC, then please contact Gill Cussons, Senior Acoustic Consultant at the Industrial Noise and Vibration Centre (INVC) Ltd and owner of Noise and Vibration Solutions.
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