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Case Study, Cree vs Luxeon · “Philips Rebel ES”: LED part number LXML-PWC2-UWOR Testing Note:...

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CASE STUDY: CREE vs. LUXEON Overview: In our ongoing effort to insure we’re providing the highest performing high bays in the industry, Cireon and Cree conducted a study to compare the performance of products from the two recognized leaders in high-powered white LEDs, Cree and Philips. Evaluation Process: We asked Cree to recommend their highest performing LEDs in the common single-wafer format; Cree recommended their XPE-HEW and XPG products. For the Philips product, we utilized LEDs from an existing production lot without notifying Philips we’d be conducting this comparison. Test Luminaires: Cireon designed and developed circuit boards in accordance with design guidelines published by Cree to accommodate the LEDs they recommended. With the exception of circuit design, board materials and construction methods were identical. With these boards, we built three luminaires, each containing a 48-LED array driven at 0.7A. Using optics and power supplies from common lots of product, except for the LEDs themselves, the luminaires were as close to identical as we could build them. The three luminaires are identified as: “Cree XP-E-HEW”: LED part number XPEHEW-L1-200-R4-G-01 “Cree XP-G”: LED part number XPGWHT-01-4CO-R3-0-02 “Philips Rebel ES”: LED part number LXML-PWC2-UWOR Testing Note: LM-79 testing for all three luminaires was conducted by Cree, in a Cree laboratory. Summary Test Results (actual results from Cree lab on following pages): Total Lumens Total Watts Efficacy (lm/W) Cree XP-E-HEW 6247.5 109.2 57.2 Cree XP-G 6097.0 103.9 58.7 Philips Rebel ES 7675.9 110 69.8
Transcript
Page 1: Case Study, Cree vs Luxeon · “Philips Rebel ES”: LED part number LXML-PWC2-UWOR Testing Note: LM-79 testing for all three luminaires was conducted by Cree, in a Cree laboratory.

CASE STUDY: CREE vs. LUXEON

Overview:In our ongoing effort to insure we’re providing the highestperforming high bays in the industry, Cireon and Cree conducted astudy to compare the performance of products from the tworecognized leaders in high-powered white LEDs, Cree and Philips.

Evaluation Process:We asked Cree to recommend their highest performing LEDs inthe common single-wafer format; Cree recommended theirXPE-HEW and XPG products. For the Philips product, we utilizedLEDs from an existing production lot without notifying Philips we’dbe conducting this comparison.

Test Luminaires:Cireon designed and developed circuit boards in accordance with design guidelines published byCree to accommodate the LEDs they recommended. With the exception of circuit design, boardmaterials and construction methods were identical.

With these boards, we built three luminaires, each containing a 48-LED array driven at 0.7A.

Using optics and power supplies from common lots of product, except for the LEDs themselves, theluminaires were as close to identical as we could build them. The three luminaires are identified as:

“Cree XP-E-HEW”: LED part number XPEHEW-L1-200-R4-G-01

“Cree XP-G”: LED part number XPGWHT-01-4CO-R3-0-02

“Philips Rebel ES”: LED part number LXML-PWC2-UWOR

Testing Note: LM-79 testing for all three luminaires was conducted by Cree, in a Cree laboratory.

Summary Test Results (actual results from Cree lab on following pages):

Total Lumens Total Watts Efficacy (lm/W)

Cree XP-E-HEW 6247.5 109.2 57.2

Cree XP-G 6097.0 103.9 58.7

Philips Rebel ES 7675.9 110 69.8

Page 2: Case Study, Cree vs Luxeon · “Philips Rebel ES”: LED part number LXML-PWC2-UWOR Testing Note: LM-79 testing for all three luminaires was conducted by Cree, in a Cree laboratory.

Filename: Cireon HEW

Manufacturer: Cree

Luminaire: Cireon Box Label HEW - SN 20261

Lamp Output: 1 lamp(s), rated Lumens/lamp: 6246.567

Max Candela: 3,504.7 at Horizontal: 225°, Vertical: 5°

Input Wattage: 109.2

Luminous Opening: Point

Test Lab: Cree

Photometry : Type C

CIE Class: Direct

Roadway Summary

Cutoff Classification: CUTOFF Distribution: TYPE I, VERY SHORT

Max Cd, 90 Deg Vert: 59.9 Max Cd, 80 to <90 Deg: 72.6

Lumens % Lamp Downward Street Side: 3,010.1 48.2% Downward House Side: 3,237.4 51.8%

Downward Total: 6,247.5 100%

Total Lumens: 6,247.5 100%

Flood Summary Efficiency Lumens

Horizontal Spread

Vertical Spread

Field (10%): 94.8% 5,923.9 122.4 114.7 Beam (50%): 76% 4,747.8 84.4 80

Total: 100% 6,245.3

Zonal Lumen Summary Zone Lumens % Luminaire 0-30 2,677.9 42.9% 0-40 4,440.6 71.1% 0-60 5,927.3 94.9% 60-90 319.2 5.1%

Lumens Per Zone Zone Lumens % Total

0-5 76.4 1.2%

5-10 218.3 3.5%

10-15 372.2 6.0%

15-20 528.7 8.5%

20-25 670.6 10.7%

25-30 811.6 13.0%

30-35 909.6 14.6%

35-40 853.1 13.7%

40-45 623.1 10.0%

45-50 378.0 6.1%

50-55 279.2 4.5%

55-60 206.4 3.3%

60-65 124.4 2.0%

65-70 61.9 1.0%

70-75 43.3 0.7%

75-80 35.3 0.6%

80-85 29.6 0.5%

85-90 24.8 0.4%

Page 3: Case Study, Cree vs Luxeon · “Philips Rebel ES”: LED part number LXML-PWC2-UWOR Testing Note: LM-79 testing for all three luminaires was conducted by Cree, in a Cree laboratory.

Coefficients Of Utilization - Zonal Cavity Method

Effective Floor Cavity Reflectance: 20% RCC %: 80 70 50 30 10 0 RW %: RCR: 0

1 2 3 4 5 6 7 8 9

10

70 50 30 0 1.19 1.19 1.19 1.19 1.12 1.08 1.05 1.02 1.04 .98 .93 .88 .97 .89 .82 .77 .90 .81 .74 .68 .84 .74 .66 .61 .79 .67 .60 .55 .74 .62 .55 .49 .69 .57 .50 .45 .65 .53 .46 .41 .61 .49 .42 .37

70 50 30 0 1.16 1.16 1.16 1.00 1.09 1.06 1.03 .90 1.02 .96 .91 .81 .95 .87 .81 .72 .88 .79 .73 .65 .82 .73 .66 .59 .77 .67 .60 .53 .72 .61 .54 .48 .68 .57 .50 .44 .63 .52 .45 .40 .60 .49 .42 .37

50 30 20 1.11 1.11 1.11 1.02 .99 .97 .93 .89 .85 .84 .79 .75 .77 .71 .67 .71 .65 .60 .65 .59 .54 .60 .53 .49 .55 .49 .44 .51 .45 .41 .48 .41 .37

50 30 20 1.06 1.06 1.06 .98 .96 .94 .90 .86 .83 .82 .78 .74 .75 .70 .66 .69 .64 .59 .63 .58 .54 .59 .53 .49 .54 .48 .44 .50 .45 .40 .47 .41 .37

50 30 20 1.02 1.02 1.02 .94 .93 .91 .87 .84 .82 .80 .76 .73 .73 .69 .65 .67 .63 .59 .62 .57 .53 .57 .52 .48 .53 .48 .44 .49 .44 .40 .46 .41 .37

0 1.00 .90 .80 .71 .64 .57 .51 .46 .42 .39 .35

Candela Table - Type C

0 22.5 45 67.5 90 112.5 135 157.5 180 202.5 225 247.5 270 292.5 315 337.5 360

0 3237 3237 3237 3237 3237 3237 3237 3237 3237 3237 3237 3237 3237 3237 3237 3237 3237

2.5 3129 3102 3076 3043 3038 3090 3189 3286 3338 3395 3440 3445 3419 3366 3281 3190 3128

5 2959 2936 2913 2886 2892 2941 3044 3165 3265 3392 3505 3451 3382 3322 3158 3015 2960

7.5 2861 2846 2827 2797 2808 2857 2947 3038 3115 3222 3350 3309 3228 3179 3052 2923 2861

10 2890 2874 2855 2836 2848 2901 2995 3069 3121 3230 3338 3321 3238 3187 3077 2949 2891

Page 4: Case Study, Cree vs Luxeon · “Philips Rebel ES”: LED part number LXML-PWC2-UWOR Testing Note: LM-79 testing for all three luminaires was conducted by Cree, in a Cree laboratory.

12.5 2966 2951 2944 2941 2961 3023 3118 3172 3216 3305 3420 3428 3360 3291 3162 3020 2967

15 3016 2986 2990 3003 3033 3096 3187 3227 3267 3346 3449 3487 3428 3354 3218 3070 3017

17.5 3037 2990 3005 3038 3074 3134 3212 3249 3289 3352 3437 3488 3430 3361 3219 3098 3038

20 3055 2989 3001 3031 3055 3123 3202 3264 3307 3348 3411 3467 3395 3329 3211 3119 3056

22.5 3046 2987 2990 3024 3057 3115 3182 3244 3286 3330 3390 3436 3371 3308 3204 3107 3046

25 3034 2987 2990 3038 3085 3151 3190 3213 3246 3307 3388 3454 3413 3346 3216 3089 3034

27.5 3024 3002 3029 3089 3123 3190 3217 3207 3231 3301 3405 3488 3435 3380 3241 3089 3024

30 3023 3033 3048 3080 3092 3157 3186 3216 3223 3305 3403 3449 3372 3310 3188 3090 3024

32.5 3007 2991 2985 2978 2986 3063 3089 3164 3200 3283 3330 3322 3236 3170 3076 3048 3008

35 2795 2795 2800 2769 2766 2846 2904 2962 3026 3119 3177 3135 3042 2982 2896 2835 2796

37.5 2375 2429 2442 2438 2438 2514 2572 2595 2620 2770 2857 2843 2753 2689 2563 2448 2375

40 1925 1984 2016 2028 2038 2117 2147 2162 2138 2324 2423 2452 2369 2306 2135 2027 1924

42.5 1420 1485 1531 1546 1562 1626 1660 1687 1659 1854 2001 2033 1940 1864 1684 1553 1420

45 921 979 1070 1112 1131 1184 1195 1164 1140 1327 1517 1552 1473 1390 1219 1050 919

47.5 621 682 812 897 904 943 918 834 787 910 1098 1164 1115 1054 898 722 621

50 521 577 698 762 777 796 762 699 660 753 894 954 920 859 721 583 521

52.5 456 508 605 654 668 673 643 602 590 665 769 811 787 723 610 502 456

55 382 424 511 548 566 568 546 512 508 565 659 684 675 615 521 424 382

57.5 295 341 424 454 472 464 445 414 418 464 546 566 562 510 427 338 295

60 225 268 336 363 376 371 352 320 328 360 432 456 451 411 340 264 225

62.5 154 173 239 266 276 269 249 221 252 264 320 345 335 296 240 177 154

65 95 105 154 173 175 179 164 130 160 154 207 228 219 210 166 106 95

67.5 57 85 116 126 125 127 115 94 110 111 140 152 150 145 119 76 56

70 42 77 100 107 104 102 94 76 86 91 115 124 122 115 98 66 42

72.5 37 73 87 92 91 88 80 63 73 76 96 105 104 99 85 61 37

75 34 69 80 83 82 79 71 53 63 65 83 91 92 87 76 56 34

77.5 32 67 73 76 76 74 65 45 56 54 73 81 82 78 69 52 32

80 30 64 65 70 71 69 59 41 50 46 64 72 73 69 59 49 30

82.5 28 61 59 65 66 66 58 39 44 40 56 63 64 61 53 46 28

85 26 57 54 59 63 62 58 42 39 36 49 55 56 51 49 43 26

87.5 24 51 50 56 61 43 52 43 34 31 42 48 47 45 44 40 24

90 24 41 44 52 53 54 54 49 20 27 36 41 43 41 39 36 60

Luminaire Report Summary

IESNA:LM-63-2002

"[TEST] 1,875"

[TESTLAB] Cree

[ISSUEDATE] 8/6/2011 12:23:57 PM

[MANUFAC] Cree

[LUMINAIRE] Cireon Box Label HEW - SN 20261

[_AMBIENT] 21.3 deg C

[_POWERFACTOR] 0.992

[_STABILIZATION] 65:02.7 Stable

[_POWER VARIATION] 0.09 %

[_LIGHT VARIATION] 0.49 %

FILE: CREATED USING ABSOLUTE PHOTOMETRY

FILE: CANDELA MULTIPLIER: 1

FILE: VERTICAL ANGLES: 37, HORIZONTAL ANGLES: 17

FILE: COORDINATE SYSTEM: TYPE C

FILE: UNIT OF MEASURE: STANDARD

FILE: BALLAST FACTOR: 1

Photometics Pro 1.3.13 copyright 2003-2011 by jSolutions, Inc. Reported data calculated from manufacturer's data file, based on IES recommended methods.

Page 5: Case Study, Cree vs Luxeon · “Philips Rebel ES”: LED part number LXML-PWC2-UWOR Testing Note: LM-79 testing for all three luminaires was conducted by Cree, in a Cree laboratory.

Filename: Cireon XPG

Manufacturer: Cree

Luminaire: Cireon Box Label XPG - SN 20260

Lamp Output: 1 lamp(s), rated Lumens/lamp: 6096.302

Max Candela: 3,555.5 at Horizontal: 112.5°, Vertical: 27.5°

Input Wattage: 103.9

Luminous Opening: Point

Test Lab: Cree

Photometry : Type C

CIE Class: Direct

Roadway Summary

Cutoff Classification: CUTOFF Distribution: TYPE I, VERY SHORT

Max Cd, 90 Deg Vert: 65.0 Max Cd, 80 to <90 Deg: 72.9

Lumens % Lamp Downward Street Side: 2,760.9 45.3% Downward House Side: 3,336.1 54.7%

Downward Total: 6,097.0 100%

Total Lumens: 6,097.0 100%

Flood Summary Efficiency Lumens

Horizontal Spread

Vertical Spread

Field (10%): 94% 5,732.7 118.2 102.8 Beam (50%): 77.9% 4,751.7 84 71.1

Total: 100% 6,095.0

Zonal Lumen Summary Zone Lumens % Luminaire 0-30 2,615.9 42.9% 0-40 4,397.2 72.1% 0-60 5,801.5 95.2% 60-90 294.8 4.8%

Lumens Per Zone Zone Lumens % Total

0-5 72.9 1.2%

5-10 212.0 3.5%

10-15 359.5 5.9%

15-20 515.2 8.5%

20-25 656.8 10.8%

25-30 799.5 13.1%

30-35 908.6 14.9%

35-40 872.7 14.3%

40-45 651.7 10.7%

45-50 359.1 5.9%

50-55 228.9 3.8%

55-60 164.7 2.7%

60-65 104.7 1.7%

65-70 59.4 1.0%

70-75 42.8 0.7%

75-80 34.3 0.6%

80-85 28.7 0.5%

85-90 25.0 0.4%

Page 6: Case Study, Cree vs Luxeon · “Philips Rebel ES”: LED part number LXML-PWC2-UWOR Testing Note: LM-79 testing for all three luminaires was conducted by Cree, in a Cree laboratory.

Coefficients Of Utilization - Zonal Cavity Method

Effective Floor Cavity Reflectance: 20% RCC %: 80 70 50 30 10 0 RW %: RCR: 0

1 2 3 4 5 6 7 8 9

10

70 50 30 0 1.19 1.19 1.19 1.19 1.12 1.08 1.05 1.02 1.04 .98 .93 .89 .97 .89 .83 .78 .91 .81 .74 .69 .85 .74 .67 .61 .79 .68 .60 .55 .74 .62 .55 .50 .69 .57 .50 .45 .65 .53 .46 .41 .61 .49 .42 .38

70 50 30 0 1.16 1.16 1.16 1.00 1.09 1.06 1.03 .90 1.02 .96 .91 .81 .95 .88 .82 .73 .89 .80 .73 .65 .83 .73 .66 .59 .77 .67 .60 .53 .72 .62 .55 .48 .68 .57 .50 .44 .64 .53 .46 .40 .60 .49 .42 .37

50 30 20 1.11 1.11 1.11 1.02 .99 .97 .93 .89 .86 .85 .80 .76 .77 .72 .67 .71 .65 .60 .65 .59 .54 .60 .54 .49 .56 .49 .45 .52 .45 .41 .48 .42 .37

50 30 20 1.06 1.06 1.06 .98 .96 .94 .90 .87 .84 .82 .78 .74 .75 .70 .67 .69 .64 .60 .64 .58 .54 .59 .53 .49 .54 .49 .45 .51 .45 .41 .47 .41 .37

50 30 20 1.02 1.02 1.02 .94 .93 .92 .87 .84 .82 .80 .76 .73 .73 .69 .66 .68 .63 .59 .62 .57 .54 .58 .52 .49 .53 .48 .44 .50 .44 .41 .46 .41 .37

0 1.00 .90 .80 .71 .64 .57 .52 .47 .43 .39 .36

Candela Table - Type C

0 22.5 45 67.5 90 112.5 135 157.5 180 202.5 225 247.5 270 292.5 315 337.5 360

0 3073 3073 3073 3073 3073 3073 3073 3073 3073 3073 3073 3073 3073 3073 3073 3073 3073

2.5 2971 3058 3197 3296 3311 3288 3235 3161 3080 2995 2920 2889 2923 2929 2924 2932 2972

5 2824 2896 3020 3197 3302 3329 3382 3277 3117 3053 2923 2818 2800 2799 2780 2785 2825

7.5 2736 2811 2949 3130 3205 3242 3362 3184 3051 2968 2876 2793 2743 2728 2715 2711 2737

10 2754 2836 2990 3187 3272 3311 3328 3125 2999 2909 2824 2744 2720 2721 2731 2736 2756

Page 7: Case Study, Cree vs Luxeon · “Philips Rebel ES”: LED part number LXML-PWC2-UWOR Testing Note: LM-79 testing for all three luminaires was conducted by Cree, in a Cree laboratory.

12.5 2789 2874 3049 3273 3409 3437 3422 3225 3068 2955 2879 2808 2794 2816 2825 2802 2789

15 2791 2872 3060 3296 3436 3483 3465 3320 3182 3076 3004 2963 2943 2933 2908 2829 2792

17.5 2793 2867 3045 3279 3456 3519 3491 3353 3241 3130 3083 3056 3025 2992 2939 2854 2793

20 2788 2849 3030 3267 3417 3493 3480 3379 3262 3145 3106 3098 3062 3004 2944 2865 2788

22.5 2735 2818 3026 3243 3395 3464 3460 3408 3302 3157 3110 3116 3049 2989 2927 2839 2736

25 2682 2802 3055 3291 3463 3493 3458 3401 3294 3161 3111 3107 3050 3004 2943 2807 2683

27.5 2653 2811 3105 3344 3507 3556 3498 3388 3278 3165 3122 3152 3129 3084 3004 2812 2654

30 2646 2815 3104 3308 3466 3542 3506 3419 3284 3189 3165 3192 3174 3125 3008 2842 2647

32.5 2567 2729 3010 3183 3320 3411 3409 3428 3314 3224 3206 3190 3126 3036 2917 2761 2568

35 2317 2495 2795 2972 3110 3232 3262 3319 3267 3200 3133 3036 2947 2850 2725 2506 2318

37.5 1907 2128 2434 2650 2796 2934 2996 3013 3030 3014 2937 2795 2664 2545 2392 2113 1907

40 1500 1713 2015 2262 2417 2555 2578 2583 2578 2646 2576 2429 2288 2174 1971 1705 1502

42.5 1040 1240 1546 1793 1967 2094 2116 2128 2080 2165 2123 2000 1827 1698 1482 1219 1041

45 575 738 1022 1268 1438 1554 1577 1578 1503 1611 1588 1472 1328 1191 987 726 576

47.5 301 410 644 860 993 1078 1071 1041 977 1076 1107 1035 947 838 645 405 301

50 251 324 495 658 769 804 765 742 688 757 821 827 772 663 492 323 251

52.5 209 268 413 535 641 652 617 614 586 622 668 680 636 538 411 265 209

55 170 218 347 441 528 530 505 515 502 522 554 556 526 442 334 214 170

57.5 133 179 285 362 437 433 418 425 425 431 462 451 434 361 275 172 133

60 105 141 222 292 346 344 335 339 348 353 378 371 355 292 218 134 105

62.5 75 103 162 207 244 255 251 258 280 271 294 290 271 217 157 95 75

65 56 84 124 150 164 179 171 162 184 179 207 203 180 158 119 72 56

67.5 43 75 107 127 131 134 124 104 127 118 144 142 135 126 110 61 43

70 38 69 94 109 111 113 104 82 93 95 118 120 115 106 85 54 38

72.5 34 66 83 96 98 99 89 67 78 79 98 100 97 90 74 50 34

75 31 63 76 86 87 88 79 56 67 66 83 86 84 78 66 46 31

77.5 29 60 69 77 78 80 72 48 59 56 72 75 75 69 59 43 29

80 26 58 64 70 71 73 67 43 52 47 62 66 65 61 53 40 27

82.5 25 57 59 64 66 68 64 42 46 40 53 57 58 54 48 39 25

85 23 55 55 60 62 64 63 46 40 35 46 50 52 48 43 36 23

87.5 22 52 51 56 58 62 62 52 35 30 40 44 46 42 38 34 22

90 21 48 49 53 56 59 62 56 19 26 34 38 40 37 35 32 65

Luminaire Report Summary

IESNA:LM-63-2002

"[TEST] 1,873"

[TESTLAB] Cree

[ISSUEDATE] 8/5/2011 4:57:29 PM

[MANUFAC] Cree

[LUMINAIRE] Cireon Box Label XPG - SN 20260

[_AMBIENT] 21.8 deg C

[_POWERFACTOR] 0.993

[_STABILIZATION] 69:14.4 Stable

[_POWER VARIATION] 0.19 %

[_LIGHT VARIATION] 0.49 %

FILE: CREATED USING ABSOLUTE PHOTOMETRY

FILE: CANDELA MULTIPLIER: 1

FILE: VERTICAL ANGLES: 37, HORIZONTAL ANGLES: 17

FILE: COORDINATE SYSTEM: TYPE C

FILE: UNIT OF MEASURE: STANDARD

FILE: BALLAST FACTOR: 1

Photometics Pro 1.3.13 copyright 2003-2011 by jSolutions, Inc. Reported data calculated from manufacturer's data file, based on IES recommended methods.

Page 8: Case Study, Cree vs Luxeon · “Philips Rebel ES”: LED part number LXML-PWC2-UWOR Testing Note: LM-79 testing for all three luminaires was conducted by Cree, in a Cree laboratory.

Filename: Cireon Rebel

Manufacturer: Cree

Luminaire: Cireon Box Label Rebel - SN 12846

Lamp Cat: Cireon

Lamp Output: 1 lamp(s), rated Lumens/lamp: 7674.716

Max Candela: 4,575.4 at Horizontal: 135°, Vertical: 17.5°

Input Wattage: 110

Luminous Opening: Point

Test Lab: Cree

Photometry : Type C

CIE Class: Direct

Roadway Summary

Cutoff Classification: CUTOFF Distribution: TYPE I, VERY SHORT

Max Cd, 90 Deg Vert: 63.3 Max Cd, 80 to <90 Deg: 78.4

Lumens % Lamp Downward Street Side: 3,636.3 47.4% Downward House Side: 4,039.6 52.6%

Downward Total: 7,675.9 100%

Total Lumens: 7,675.9 100%

Flood Summary Efficiency Lumens

Horizontal Spread

Vertical Spread

Field (10%): 93.6% 7,182.6 111.8 104.3 Beam (50%): 79.5% 6,103.8 81.3 79.4

Total: 100% 7,673.4

Zonal Lumen Summary Zone Lumens % Luminaire 0-30 3,531.0 46% 0-40 5,813.4 75.7% 0-60 7,352.8 95.8% 60-90 321.9 4.2%

Lumens Per Zone Zone Lumens % Total

0-5 99.8 1.3%

5-10 295.1 3.8%

10-15 494.3 6.4%

15-20 703.7 9.2%

20-25 886.7 11.6%

25-30 1,051.5 13.7%

30-35 1,193.2 15.5%

35-40 1,089.1 14.2%

40-45 746.6 9.7%

45-50 375.6 4.9%

50-55 242.8 3.2%

55-60 174.4 2.3%

60-65 110.1 1.4%

65-70 65.2 0.8%

70-75 48.6 0.6%

75-80 38.7 0.5%

80-85 32.0 0.4%

85-90 27.3 0.4%

Page 9: Case Study, Cree vs Luxeon · “Philips Rebel ES”: LED part number LXML-PWC2-UWOR Testing Note: LM-79 testing for all three luminaires was conducted by Cree, in a Cree laboratory.

Coefficients Of Utilization - Zonal Cavity Method

Effective Floor Cavity Reflectance: 20% RCC %: 80 70 50 30 10 0 RW %: RCR: 0

1 2 3 4 5 6 7 8 9

10

70 50 30 0 1.19 1.19 1.19 1.19 1.12 1.08 1.05 1.03 1.05 .99 .94 .89 .98 .90 .84 .79 .91 .82 .75 .70 .86 .75 .68 .63 .80 .69 .62 .57 .75 .64 .57 .51 .70 .59 .52 .47 .66 .55 .48 .43 .62 .51 .44 .39

70 50 30 0 1.16 1.16 1.16 1.00 1.09 1.06 1.03 .91 1.02 .97 .92 .82 .96 .88 .83 .74 .89 .81 .75 .67 .84 .74 .68 .61 .78 .68 .61 .55 .73 .63 .56 .50 .69 .58 .51 .46 .65 .54 .47 .42 .61 .50 .44 .39

50 30 20 1.11 1.11 1.11 1.02 1.00 .98 .94 .90 .86 .86 .81 .77 .79 .73 .69 .72 .66 .62 .67 .61 .56 .62 .55 .51 .57 .51 .47 .53 .47 .43 .49 .43 .39

50 30 20 1.06 1.06 1.06 .98 .97 .95 .90 .87 .85 .83 .79 .76 .77 .72 .68 .71 .65 .61 .65 .60 .56 .60 .55 .51 .56 .50 .46 .52 .46 .42 .49 .43 .39

50 30 20 1.02 1.02 1.02 .95 .93 .92 .88 .85 .83 .81 .77 .74 .75 .71 .67 .69 .64 .61 .64 .59 .55 .59 .54 .50 .55 .50 .46 .51 .46 .42 .48 .43 .39

0 1.00 .90 .81 .73 .65 .59 .54 .49 .44 .41 .37

Candela Table - Type C

0 22.5 45 67.5 90 112.5 135 157.5 180 202.5 225 247.5 270 292.5 315 337.5 360

0 4031 4031 4031 4031 4031 4031 4031 4031 4031 4031 4031 4031 4031 4031 4031 4031 4031

2.5 4041 4092 4217 4287 4277 4271 4277 4253 4232 4195 4146 4096 4079 4080 4042 4027 4041

5 4017 4068 4151 4232 4257 4322 4485 4495 4398 4385 4301 4103 4047 4045 4026 4003 4017

7.5 3901 3943 4004 4090 4150 4248 4466 4445 4348 4346 4234 4060 3977 3941 3914 3886 3900

10 3875 3904 3968 4078 4154 4257 4436 4367 4284 4253 4134 4014 3946 3878 3848 3844 3875

Page 10: Case Study, Cree vs Luxeon · “Philips Rebel ES”: LED part number LXML-PWC2-UWOR Testing Note: LM-79 testing for all three luminaires was conducted by Cree, in a Cree laboratory.

12.5 3957 3991 4059 4194 4319 4418 4521 4451 4373 4275 4172 4074 4009 3946 3908 3908 3956

15 4060 4078 4128 4264 4385 4496 4560 4508 4442 4345 4250 4193 4117 4041 4010 4001 4060

17.5 4107 4121 4150 4291 4422 4513 4575 4532 4452 4342 4258 4236 4156 4094 4065 4065 4107

20 4130 4134 4162 4300 4441 4518 4552 4548 4474 4316 4259 4280 4182 4092 4063 4085 4129

22.5 4059 4053 4101 4245 4399 4482 4476 4510 4436 4298 4239 4251 4179 4066 4018 4034 4058

25 3950 3968 4027 4140 4306 4364 4353 4382 4315 4204 4176 4183 4114 4035 3980 3964 3950

27.5 3943 3962 4032 4148 4303 4360 4336 4284 4188 4101 4128 4159 4130 4065 4018 3996 3943

30 4097 4129 4127 4190 4326 4420 4376 4326 4184 4150 4174 4207 4168 4093 4032 4072 4097

32.5 3987 4032 4055 4068 4193 4299 4255 4278 4250 4207 4192 4173 4086 3960 3904 3945 3987

35 3554 3595 3660 3722 3843 3965 3975 4036 4039 4039 3995 3890 3748 3609 3577 3529 3553

37.5 2865 3013 3094 3208 3377 3528 3556 3539 3517 3566 3570 3444 3272 3165 3090 2974 2863

40 2197 2379 2484 2617 2778 2933 2974 2971 2849 2977 2990 2919 2752 2644 2486 2354 2197

42.5 1479 1637 1835 1964 2115 2273 2326 2306 2172 2300 2335 2279 2086 1967 1809 1609 1478

45 869 990 1168 1291 1419 1549 1572 1558 1444 1564 1643 1576 1434 1306 1160 973 867

47.5 543 612 758 849 908 1003 993 961 884 980 1093 1042 960 880 755 606 542

50 440 478 601 672 742 774 712 691 650 702 800 797 776 719 596 484 440

52.5 371 408 515 552 611 636 594 584 561 592 661 663 650 596 508 410 371

55 291 323 425 456 501 508 491 489 484 497 561 544 540 493 426 329 291

57.5 238 263 340 367 410 412 395 392 407 406 460 458 455 408 346 267 238

60 197 206 265 292 318 321 310 312 339 326 364 365 362 325 279 213 197

62.5 147 139 197 220 236 238 232 238 286 249 280 281 270 244 199 142 147

65 89 96 147 163 169 171 164 152 205 168 203 205 194 176 147 90 89

67.5 51 85 127 140 141 140 131 106 137 123 153 161 157 146 123 77 51

70 45 78 111 122 123 122 111 86 106 101 130 138 135 126 108 70 45

72.5 40 73 99 106 105 104 94 71 89 85 109 117 115 107 94 64 40

75 37 69 90 94 92 91 82 59 76 72 93 100 100 94 84 60 38

77.5 35 66 82 86 82 82 73 50 67 61 81 87 87 83 74 56 35

80 33 63 74 78 74 74 66 44 59 53 70 76 77 74 66 54 33

82.5 31 61 68 72 68 68 61 42 52 46 60 66 68 65 59 51 30

85 28 57 63 66 63 63 59 43 46 40 52 58 59 56 53 48 29

87.5 27 52 58 63 61 61 59 48 41 35 45 50 53 50 47 44 26

90 26 47 55 60 58 60 59 54 23 31 39 44 47 45 43 41 63

Luminaire Report Summary

IESNA:LM-63-2002

"[TEST] 1,870"

[TESTLAB] Cree

[ISSUEDATE] 8/5/2011 11:57:58 AM

[MANUFAC] Cree

[LUMINAIRE] Cireon Box Label Rebel - SN 12846

[LAMPCAT] Cireon

[_AMBIENT] 21.2 deg C

[_POWERFACTOR] 0.993

[_STABILIZATION] 70:04.5 Stable

[_POWER VARIATION] 0.27 %

[_LIGHT VARIATION] 0.49 %

FILE: CREATED USING ABSOLUTE PHOTOMETRY

FILE: CANDELA MULTIPLIER: 1

FILE: VERTICAL ANGLES: 37, HORIZONTAL ANGLES: 17

FILE: COORDINATE SYSTEM: TYPE C

FILE: UNIT OF MEASURE: STANDARD

FILE: BALLAST FACTOR: 1

Photometics Pro 1.3.13 copyright 2003-2011 by jSolutions, Inc. Reported data calculated from manufacturer's data file, based on IES recommended methods.


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