Lighting Control Strategies

The California Lighting Technology Center (CLTC) organized a study in eight private offices at the UC Davis to attempt to determine energy savings for bi-level switching in offices.  Here are the findings:

• The auto-ON to 100% bilevel occupancy sensor saved 34% compared to the baseline.

• The auto-ON to 50% bilevel occupancy sensor saved 52% compared to the baseline.

• The manual-ON bilevel occupancy sensor saved 46% compared to the baseline.

Link to Lighting Control Associates Summary

Wattstopper handles this through a digital system ( DLM Site ) that is commissioned out of the box and is extremely easy to install as demonstrated in the video below.  Also, keep in mind that there is additional savings if LED lighting is being used because LEDs will last even longer when in a dimmed state.

Digital Lighting Management (DLM)
by Wattstopper

This is a 6 minute video from Wattstopper on the installation of the DLM system at Weber State University.  This is a worthwhile viewing if you do public or school/university work.  Let me know if you would like a demonstration as I have a DLM kit on hand.  Thanks.

 

From the Wattstopper web site:

 

	DLM: Digital Wall Switch Occupancy Sensor We're pleased to announce the launch of new Digital Lighting Management (DLM) Wall Switch Occupancy Sensors that make it easier than ever to plug in self-configuring, code-compliant, digital sensors throughout an installation. The one and two-button LMPW-100 Series (PIR) and LMDW-100 Series (dual technology) sensors are ideal for conference rooms, offices and restrooms.
	Highlights: Self-configure to manual-On or auto-On to 50% to meet the strictest energy codes Pushbuttons and scrolling LCD screen make optional customization a breeze IR transceiver for wireless configuration using LMCT-100 Button(s) and sensor can be bound to any/different loads Sensors feature superior coverage detect minor motion 25' from sensor detect major motion 40' from sensor

 

And above is a case study for DLM at Weber State University.

 

Shad Asebrook

Sesco Lighting

615-830-1655

SAsebrook@SescoLighting.com

Bad Cove Lighting

This is a to be unnamed restaurant that Jen, Caleb, and I frequent after church on Sundays.  I think this is a bad example of cove lighting and there are three possible solutions that I will show.

So the line on the ceiling is a bit uneven and odd looking.  Of course I make a living doing this but the pattern was distracting to me.  I could not see into the cove but suspect that this is a staggered strip.  Three ideas that would have made this a better cove lighting job:

1.  Increase the depth of the cove.  The greater depth would allow for more dispersion and the pattern would be further in to the middle of the the ceiling.

2.  Use linear LEDs.  This is a more expensive option, at least in initial cost, but an LED with a narrow, elliptical distribution would not have this issue and with an adjustable mounting bracket could push the light in to the middle which is desirable.  Here is an example of such a fixture:  Beghelli Spyder

3.  Use the new seemless lamps.  This would give uniformity but would not kick the light to the middle of the ceiling.  This would be better than the current solution but not the best in a good, better, best scenario.
Seemless Lamps, Feelux

 

 

Shad Asebrook

Sesco Lighting

SAsebrook@SescoLighting.com

615-830-1655

 

Nashville commercial lighting, Nashville architect, electrical engineer, LED lighting, Sesco Lighting