Vansim (Dongguan)Hardware Products Co., Ltd.
Purpose of thermal testing
In product heat dissipation design, thermal testing is an essential step, which is an important part of ensuring product heat dissipation performance. The main functions of thermal testing are as follows:
1) Test whether the actual heat dissipation performance of the product can meet the requirements;
2) Check if there are any improvements or cost reductions in the product's heat dissipation plan;
3) Test multiple solutions, establish a testing database, and accumulate design experience;
4) Regression summary of simulation/theoretical calculations in the early stage of design to improve the level of subsequent heat dissipation design.
Thermal testing method
Generally, a heating block can be used to simulate the installation of a heat source on a radiator or liquid cooling plate. The radiator provides a certain amount of cooling air volume, and the liquid cooling plate inputs a set flow rate of coolant. The temperature recorder records the temperature at each temperature monitoring point. After the cooling system works for a period of time, the temperature at each monitoring point tends to stabilize. At this point, the temperature at each monitoring point is the final temperature, which is recorded in the test report data.
Collect temperature curve
Liquid cooled plate test
Hot test results
Temperature rise test data
|
Serial Number |
Flow L/min |
Tin(℃) |
Tout(℃) |
T1(℃) |
T2(℃) |
T3(℃) |
T4(℃) |
Power (W) |
Temperature rise (℃) |
Thermal resistance ℃/W |
|
1 |
15 |
15.5 |
20.5 |
>32.3 |
35.4 |
37.1 |
37.9 |
5645 |
>22.4 |
0.00397 |
|
2 |
18 |
14.6 |
19 |
>30.7 |
33.7 |
35.2 |
35.9 |
5758 |
>21.3 |
0.0037 |
Thermal resistance curve
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