energy audit: inefficiency

by John A. Herbert

Part of the energy audit process should be to review the condition of the plant, and equipment, generally if problems are discovered these can be categorised as deferred maintenance.

Here an example, an 800 mm axial fan, and a key part of the extract system providing mechanical ventilation. The photograph of the suction side clearly shows the flexible connection is ripped, and the discharge side was similarly damaged.

hong kong energy experts

The extract fan was operating, still moving air, and consuming amperes, but the ‘system’ was not functioning. The failure points occurred at the highest pressure (discharge side) and lowest pressure (suction side) regions, that means little air movement could occur inside the ductwork.

extract-fan-cad

Now explain to the management why they paid for electricity for the whole of last year, but no mechanical ventilation was provided.

For an energy audit, that complies with EMSD Energy Audit Code, call the energyLAB experts today!

About John A. Herbert, REA, energy consultant, BEAM Pro

John is director of energyLAB energy consultants firm, he has with more than 30 years engineering experience gained across three continents. He is Registered Energy Assessor, a member of HKAEE. Read his blog at http://www.johnherbert.hk
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