David Chesley, PE, LEED AP, RCDD, Interface Engineering, Portland, Ore.
Articles
Leveraging the BAS
By using the building automation system (BAS) to its fullest extent, a school district was able to control its HVAC, electrical, and lighting systems.
Avoiding harmonics in HVAC and electrical systems
Power electronics can increase energy savings, and at the same time can distort the quality of electrical power. Here are some tips to mitigate harmonics.
K-rated or harmonic mitigating transformers
Just as current harmonics can cause additional heating and losses in the magnetic core of a motor, they can produce much the same effect in the iron core of a transformer. However, greater losses from harmonics can occur in the windings of the transformer.
Understanding standby power system grounding
Knowing how to apply proper grounding and bonding to electrical systems and transfer switches for common standby power system configurations can minimize power outages, equipment damage, and injuries.