Performance of T12 and T8 Fluorescent Lamps and Troffers and LED Linear Replacement Lamps: CALiPER Benchmark Report.

摘要

The U.S. Department of Energy (DOE) Commercially Available LED Product Evaluation and Reporting (CALiPER) Program was established in 2006 to investigate the performance of luminaires and replacement lamps that use light-emitting diodes (LEDs). To help users better compare LED products with conventional lighting technologies, CALiPER also has performed benchmark research and testing of traditional (i.e., non-LED) lamps and fixtures. This benchmark report addresses standard 4-ft fluorescent lamps (i.e., T12 and T8) and the 2-ft by 4-ft recessed troffers in which they are commonly used. This report also examines available LED replacements for T12 and T8 fluorescent lamps and their application in fluorescent troffers. The construction and operation of linear fluorescent lamps and troffers are discussed, as well as fluorescent lamp and fixture performance, based on manufacturer data and CALiPER benchmark testing. In addition, the report describes LED replacements for linear fluorescent lamps and compares their bare lamp and in situ performance with fluorescent benchmarks on a range of standard lighting measures, including power usage, light output and distribution, efficacy, correlated color temperature, and the color rendering index.