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Miami Valley Career Tech Center
 

Miami Valley Career Technology Center
modernizes with prismatic lighting
Part 1



The Miami Valley Career Technology Centers in Dayton, Ohio, strives to replicate on-the-job environments as much as possible to prepare students for future employment.

Educating and training more than 2,000 students each year, the 450,000-square-foot Center offers advanced employment preparation for high school juniors and seniors along with post-secondary education for adults.

"We try to stay on the cutting edge of technology," said Mike Study, maintenance supervisor, Miami Valley Career Technology Center. "We are constantly modernizing classrooms and laboratories so that when students gain employment, they can start to work immediately because they will be familiar with the equipment and the environment."

As part of its ongoing modernization program, the Center recently retrofit the lighting in its 3,500-square-foot welding laboratory, where students participate in a classroom learning situation and practice welding techniques inside individual booths. The lab was previously lit with T-12 fluorescent luminaires that were installed when the building was constructed in 1969. The new lighting system was designed to provide higher quality illumination and reduce energy consumption.

"Tasks performed within the lab are very detailed," said Study. "We wanted to supply students with very uniform illumination that would enhance the learning process and would facilitate instructors in critiquing the students' work."

PrismGlo® Delphic™ luminaires from Holophane were installed on the 16-foot metal deck ceiling. The fixtures, which include Prismatron electronic ballasts, use 400-watt metal halide lamps. The units are spaced 12' x 14' on center, with illumination levels at 70 footcandles.

"Before we made the decision to purchase the PrismGlo luminaires, we installed glass fixtures from another manufacturer in one of our other laboratories," said Study. "We were unhappy with the results because the room appeared shadowy and we felt much of the light was wasted. The PrismGlo luminaires control the illumination so the light cascades over the entire area for a comfortable and evenly lit environment."

The Prismatron electronic ballasts contribute to the lighting system's overall efficiency by consuming fewer watts per fixture than magnetic ballasts and improving lamp lumen maintenance. Occupancy sensors power the luminaires down to 50 percent output when the lab is unoccupied to further reduce energy consumption. The fixtures are on a timer that automatically switches the units on and off; the timer has an override from the occupancy sensor so the luminaires ignite any time someone enters the space.

"With the occupancy sensors and electronic ballasts, we are waiting to see how many hours the lamps will continue to burn before they need to be replaced," said Study. "Once we establish a time frame, we will develop a regular schedule for group relamping. We clean the lighting fixtures about every six months because of the large quantity of dust in the air."

Read more on further phases of this project with Part 2 of this story here.



 

 
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