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Redesign of Lighting Fixtures for the Texas Department of Corrections
Abstract
Over 100 tests of potential design modifications for the cell light
fixtures used by the Texas Department of Corrections have been
conducted. As a result of these tests, the following recommendations
are made:
1. Turn diffuser material so prisms face cell.
2. Enlarge diffuser opening to 16 by 46 inches.
3. Replace 1/2-inch hardware cloth by #3 stainless cane weave
with 2-inch mesh, painted white.
4. Replace ballasts with Advance R-2S40-TP Mark III or
equivalent.
5. Replace blankets with light colored blankets.
6a. Use fixture with four 34 watt tubes if no allowance for
fixture degradation is deemed acceptable;
6b. Use fixture with three 40 watt high efficiency tubes and
reflector if 10%-15% margin above 20 fc is needed;
6c. Use fixture with four high efficiency tubes if 20% margin
above 20 fc is considered necessary.
Description
Implementation of these recommendations will result in reduced construction cost of $91,418 and annual operating savings of $88,910 if recommendations 1-5 and 6a are implemented at Amarillo and Gatesville. Use of recommendations 1-5 and 6b will increase first cost by $22,592, but annual operating savings also increase to $98,928 while 6c would provide first cost savings of $67,606 and operating savings of $73,882 annually. Additional maintenance savings will be realized in each case since the fixtures recommended above use tubes with 20,000 - 24,000 hour operating lifetimes instead of the 12,000 hours of the base case tubes.Subject
Texas Department of CorrectionsCollections
Citation
Claridge, D. E.; Turner, W. D.; Krarti, M.; Yebra, R. (1988). Redesign of Lighting Fixtures for the Texas Department of Corrections. Energy Systems Laboratory (http://esl.tamu.edu), Texas A&M University; Department of Mechanical Engineering, Texas A&M University. Available electronically from https : / /hdl .handle .net /1969 .1 /2052.