ENERGY STAR TM-21 Calculator

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Roger May
6 years ago
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ENERGY STAR TM-21 Calculator Note: Users should download a new copy of this calculator for each use, to ensure use of the most up-to-date version of the calculator.

1 ENERGY STAR TM-21 Calculator Note: Users should download a new copy of this calculator for each use, to ensure use of the most up-to-date version of the calculator. Users are encouraged to bookmark the hyperlink to this calculator. Project-specific copies complete with calculations may be saved on a local drive. This calculator is based on the Illuminating Engineering Society s TM-21-11: Projecting Long Term of LED Light Sources. Calculator results have been validated by the U.S. National Institute of Standards and Technology (NIST). Calculations are locked; only data entry cells may be modified. Calculator inputs are entered on the second tab, with instructions. The calculator may be used with one, two or three case temperatures. Inputting values on the second tab generates a complete TM-21 report on the Report tab. Questions may be directed to luminaires@energystar gov or lamps@energystar gov

3 TM-21 Inputs Instructions Yellow fields are completed by the user. Fields not used should be left blank. Cyan fields are calculated based on user entries. First, enter a description of the LED light source tested. Then complete the fields labeled "LM-80 Testing Details". Test duration must be at least 6,000 hours. If only one case temperature data set is to be used (no interpolation), complete only " temperature 1". For only two case temperature data sets, complete 1 and 2. Next, further to the right, in the corresponding box(es) for each tested case temperature, enter the test data along with the time (in hours) at which each measurement was taken. Data entered must be normalized then averaged measured data (per TM-21 sections and 5.2.2). Enter drive current, in-situ temperature data and the percentage of initial lumens to project to in the fields labeled "In- Situ Inputs". Results can be tailored to estimate lumen maintenance at a specific time by entering a value (t) in the yellow field. A complete TM-21 report will Description of LED Light Source Tested (manufacturer, model, catalog number) LG INNOTEK, LGIT in1 Package 2700K (LEMWS59R Series) % % % % % % % % % % % % % % % LM-80 Testing Details % % % Total number of units tested per case temperatur % % % Number of failures: 0 Number of units measured: 28 Test duration : 6000 Tested drive current (ma): temperature 1 (T c, ⁰C): 55 temperature 2 (T c, ⁰C): 85 temperature 3 (T c, ⁰C): 95 In-Situ Inputs Drive current for each LED package/array/module (ma): In-situ case temperature (T c, ⁰C): 42.2 Percentage of initial lumens to project to (e.g. for L 70, enter 70): 70 Results (t) at which to estimate lumen maintenance : 6,000 Lumen maintenance at time (t) : % Calculated L70 : 200,000 Reported L70 : LM-80 Test Inputs Test Data for 55⁰C Case Test Data for 85⁰C Case Test Data for 95⁰C Case

5 TM-21 Report Table 1: Report at each LM-80 Test Condition LG INNOTEK, LGIT in1 Package 2700K(LEMWS59R Series) Description of LED Light Source Tested (manufacturer, model, catalog number) Test Condition 1-55⁰C Case Temp Test Condition 2-85⁰C Case Temp Test Condition 3-95⁰C Case Temp T s,1 (⁰C) T s,1 (K) Sample size 28 Sample size 28 Sample size 28 B α E-06 Number of failures 0 Number of failures 0 Number of failures 0 T s,2 (⁰C) - T s,2 (K) - Test duration 6,000 Test duration 6,000 Test duration 6,000 α 2 - projection (hour to 1,000-6,000 projection (hour to 1,000-6,000 projection (hour to 1,000-6,000 B E a /k b - α 1.841E-06 α 1.244E-06 α 3.003E-06 A - B B B B , , ,000 T s,i (⁰C) Table 2: Interpolation Report (projection based on in-situ temperature entered) T s,i (K) α i Projected L70(6k) at at 42.2⁰C 1.841E ,000 Report Generated By: Hank Cheng Notes: Company: Optics Laboratory, SGS Taiwan ltd. Date: 02/04/2015

OPTO Laboratory Test Report IES LM MEASURING LUMEN MAINTENANCE OF LED LIGHT SOURCE. Test Date January 16, 2014 to April 8, 2015.

OPTO Laboratory Test Report IES LM MEASURING LUMEN MAINTENANCE OF LED LIGHT SOURCE. Test Date January 16, 2014 to April 8, 2015. IES LM-80-08 MEASURING LUMEN MAINTENANCE OF LED LIGHT SOURCE Report Number Test Sample Q131107 2T03X5WW11000003 Rating DC 150mA 0.5W Normal CCT 2,700 K Test Date January 16, 2014 to April 8, 2015 Test