|
BN Thermal Resistance Test
I. Objective:
Test thermal resistance with and without BN coating on light housing.
II. Test Method:
1. Placing entire lighting
assembly into cardboard box.
2. Power up the lamp using
power supply 12V、900mA.
3. Record data every 10
minutes.
4. Measure the temperature
changes.
III. Test Result
|
High Power LED Lighting
with BN Coating Housing |
|
|
Time（T） |
Vf（V） |
I（A） |
T1（℃） |
T2（℃） |
Thermal Resistance（R） |
|
10min |
9.61 |
0.899 |
72.5 |
93.4 |
2.42 |
|
20min |
9.54 |
0.899 |
82.3 |
95.7 |
1.56 |
|
30min |
9.52 |
0.899 |
85.8 |
97.7 |
1.39 |
|
40min |
9.54 |
0.899 |
87 |
97.2 |
1.19 |
|
50min |
9.55 |
0.899 |
87.5 |
97.4 |
1.15 |
|
60min |
9.5 |
0.899 |
86.8 |
97.3 |
1.23 |
|
High Power LED Lighting without BN Coating Housing |
|
|
Time（T） |
Vf（V） |
I（A） |
T1（℃） |
T2（℃） |
Thermal Resistance（R） |
|
10min |
9.96 |
0.899 |
87.3 |
92.8 |
0.61
|
|
20min |
9.95 |
0.899 |
96.9 |
106.7 |
1.10
|
|
30min |
9.95 |
0.899 |
98.7 |
111.4 |
1.42
|
|
40min |
9.94 |
0.899 |
99.1 |
112.4 |
1.49
|
|
50min |
9.92 |
0.899 |
99.7 |
112.1 |
1.39
|
|
60min |
9.92 |
0.899 |
100.2 |
111.1 |
1.22
|
Conclusion:
In 60 minutes testing, the
thermal resistance is similar between coating and none coating housing, but
the temperature reading is lower on the BN coating application. The BN
coating provides better thermal management.
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