We're big fans of saving energy!

Posted by sll33 at Sep 26, 2019 01:40 PM |
The University has conducted a successful trial replacing existing supply fan on AHU3 in the Henry Wellcome building.

A trial using a new energy efficient fan design has delivered 80% savings & 53 tCO2 per annum.

The centrifugal fans, used in central air conditioning units and building ventilation systems have very good hydraulic efficiency and a low noise level and are ideally suited for high pressures. Following the successful trial noise levels have significantly been reduced, which will benefit the working environment.

Two old fans were replaced with 6 new energy efficient plug fan design from ebmpapst, which uses brushless technology. As part of the design the chamber where fans are located is also changed. These are then controlled directly via the BMS systems with a 0-10V signal to control fan speeds to obtain required air flow. In this specific application the AHU runs 24/7 so increased savings are realised.

Where running hours are lower this will be directly proportional to the savings made but overall the project is estimated to have a payback period of less than two years.

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