Use of T12 lighting systems in retrofit applications within New York Office of Mental Health Facilities - A case history
In 1990, the Governor of New York State issued Executive Order No. 132, directing all state agencies to reduce energy consumption by 20% from the base year of 1988/89 by the year 2000. To assist in meeting this goal, the New York State Office of Mental Health (OMH) established the Lighting Revitalization Program in 1992. State facilities are divided into five regions, each served by existing Environmental Revitalization Teams. OMH supplemented these teams with lighting technicians in this new program. The program`s goal was to rehabilitate outdated, inefficient lighting systems throughout 28 OMH facilities, totaling 28 million square feet in area. OMH requested the former Facility Development Corporation (FDC), now the Dormitory Authority of the State of New York (DASNY), to contract with Novus Engineering to evaluate the relative efficiency of T8 and T12 ballasts. Novus contracted an independent laboratory, Eastern Testing Laboratories (ETL), for performance testing. ETL tested four ballast/lamp configurations for light Output and input power, and Novus analyzed the results for relative efficiency and also calculated 25-year life cycle costs. The test results indicated that the efficiencies of the T12/34W and T8/32W ballast/lamp technologies were nearly identical. The input power and light output of these systems were similar. The lumens per Watt ratings for the two systems were nearly equal, with the T8 technology being only about two percent more efficient, generating more light with similar input power. The life cycle costs for the two systems were nearly identical, with the T12 system providing a slightly lower life cycle cost. Given the above considerations, the agency has been installing T12 electronic ballasts and 34W lamps in buildings where fluorescent fixtures warranted upgrading. This type of retrofit goes against current trends, but the use of T8 system could not be justified in buildings undergoing minor retrofitting.
- OSTI ID:
- 478244
- Report Number(s):
- CONF-961173-; TRN: 97:002008-0067
- Resource Relation:
- Conference: 19. world energy engineering congress, Atlanta, GA (United States), 6-8 Nov 1996; Other Information: PBD: 1997; Related Information: Is Part Of Energy business and technology sourcebook: Proceedings of the 19th world energy engineering congress; PB: 708 p.
- Country of Publication:
- United States
- Language:
- English
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