Architectural SSL - August 2018

Page 10


Hi-Tech is Coming


a range of possibilities for the reduced output were evaluated. Interestingly,

Editor’s Note: As part of our look back at 11 years

the lab results were better than the field

of reporting on the SSL front, following is a series

results, with three of the four luminaires

of short interviews with varying LED executives

showing outputs lower by 6%, 7% and

who give their perspectives on the state of things.

14%, respectively, vs. a new luminaire. Researchers then sent the fixtures’ light squares to the LED package supplier, where several lens irregularities were

Sarah Golish Senior Vice President, Acuity Brands

noted. Those Sept. 2016 readings of first-

immediately or in the future. When paired with sensors and software, LEDs are a conduit to the

generation fixtures coincided with ini-

IoT and can play an integral role in the ongoing

tial measurements for the second-gener-

“It is amazing how SSL’s evolution has forever

ation installation. Those were repeated

changed lighting and opened so many new

in Aug. 2017 after 4000 hours of the sec-

technological possibilities,” states Acuity’s Sarah

ogy’s future, is the future of DOE, which has had

ond generation’s operation. The follow-

Golish. One thing the company has fully com-

a huge role in growing SSL tech. Golish says the

up testing showed performance declines

mitted to is engineering connected lighting and

industry is duly concerned with the proposals to

comparable to those found in the older

smart buildings. “It will transform how we live

fixtures after 5000 operating hours.

and work,” she says. “Lighting will play such

In addition, researchers also gathered

an important role in how we feel and operate

spectral power distribution data for the

in a space, as well as serve as a key conduit for

newer luminaires during both initial and

transmitting data to better manage spaces, find

follow-up testing and noted an average

additional ways to use a given space more pro-

CCT shift of 152K over the 4000-hour

ductively, and track assets.”

operating period. Determining the cause

But does such promise take a whole new way

development of smart buildings.” Something that threatens lighting technol-


of the color shift was out of scope for

of thinking—both at a design and user level?

the report, however earlier reports have

Golish sees this as a tremendous opportunity.

linked such shifts to high ambient and

“The challenge is in prioritizing what matters

reduce funding for the Solid-State Lighting Pro-

operating temperatures. Temperature

most to users and to the enterprise, and then

gram, and will persist in advocating for the con-

is a significant challenge in Yuma—an

learning how to manage all the data so decisions

tinuation of these important programs through

operating temperature of 149°F was

can be made. The data generated by a full-scale

the DOE NGLIA and other similar initiatives. “We

noted for one luminaire during June

sensory network powered by LED lighting can

also encourage the DOE to maintain their focus

2016 testing, and even when not

be overwhelming. It is important to understand

on improving the efficiency and effectiveness

operating during daytime hours, LED

what information is important and how can it be

of lighting regulations to streamline the govern-

temperatures reached 122°F. Research-

used to improve a business or user experience.”

ment process concentrating on systems perfor-

ers also observed major temperature

With an intelligent universe seemingly immi-

mance and minimizing the regulatory burden

shifts, down to 86°F in early morning

nent—and tech expanding everyday—when’s the

hours, in a cycle that repeats daily. The

right time to make the investment? Golish says

researchers weren’t able to determine

you could wait, but any number of case studies

controls. DLC, says Golish, helped accelerate the

a definitive cause for the decline that

demonstrate how end-users are reducing their

industry adoption of SSL and set some minimum

occurred in the first-gen fixtures. Their

lighting costs by 30% or more when they upgrade

standards. “But at present, the industry needs

conclusion highlights the gap between

to LED luminaires. IOT, however, is a different

less help there, and more help in the adoption of

lab testing and in-field performance. It

sell. “What we’re experiencing is customers

SSL controls. The risk, however, is that specifi-

also notes system and field-application

seeing the value of ‘future proofing’—making

cations could push solutions that are easier for

conditions can make it difficult to pre-

sure their lighting has the capability embed-

Efficiency Programs to measure as opposed to

dict actual performance over time.•

ded to connect to other systems, and to receive

the best ROI solution for the end user. We look

and send data via their smart drivers and other

forward to working with DLC to mold specifica-

technologies, whether they plan to use that

tions which will optimize these solutions.” •


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requirements.” Another major area of concern surrounds

7/31/18 3:05 PM