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Staff working for a manufacturer of heavy-duty machinery complained to their managers about the noise from a bank of large air handling unit fans.
Bennett Electrical were called in to investigate whether changing the motors would help reduce noise.
A sample motor was changed but this did not fully address the noise issue. We investigated further, and after considering various solutions recommended 2 x 22kW for the air intake, and 2 x 5.5kW for extraction.
Using a Danfoss VLT variable drive unit, we were able to drop the cycle down to 40Hz, and set the air vents to open automatically in response to prevailing conditions. The VLT variable drive and auto-adjustment achieved a 50% saving in energy costs. This reduction will cover the cost of the unit in less than two years.
The original energy cost was £8,257 on the 22kW drive. By trimming speed the client reduced noise and also saved on maintenance because there is a significant reduction in wear and tear:
Example of energy savings that can be achieved
This example shows actual data from an installation recently undertaken by Bennett Electrical.
Please contact us for a discussion of how we can help cut your energy bills.
You can even try one of our solutions for a month, and see for yourself the savings that can be made.
Contact us to find out more about our FREE TRIAL scheme.