Sheldon ISD
Sheldon ISD
Houston, TX
Overview
Prism Electric was tasked by the Sheldon Independent School District to devise an LED solution for the two gymnasiums at M.R. Null Middle School. The school was built in 2009 and installed multi-lamp compact fluorescent high bay fixtures in lieu of traditional metal halide fixtures as an attempt to save energy. The standard 400W metal halide would have consumed 458W of energy compared to 334W with the compact fluorescent. Unfortunately, this was a poor option due to compact fluorescent fixtures having a shorter life span than the metal halide. With fixtures constantly going out from the get-go, levels were never over the required 30 foot-candles of light. Maintenance staff had difficulty scheduling time during the school year to place plywood in order to utilize a lift for replacing fixtures. This ultimately proved too costly replacing each year.
Prism Electric did several photometric layouts to determine the best solution. The final design used a 135W LED high bay fixture as a one-for-one replacement achieving the increased light levels necessary and providing better uniformity across the gym floor thus eliminating dark areas.
Prism Electric provided a completely new LED lighting system which lowered energy consumption by 60% while increasing light levels over the 30fc average requirement. Prism also provided Sheldon ISD with a 10-year warranty including replacements for any fixtures that fail at no additional cost to the school district.