projects:mechanical:tests:heatpipes
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| projects:mechanical:tests:heatpipes [2014/08/24 16:00] – [Test method] admin | projects:mechanical:tests:heatpipes [2019/09/22 11:03] (current) – admin | ||
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| * After powering up fan and transistor, every 5 seconds a temperature reading was recorded from the temperature sensor. After 120 seconds the temperature would not vary very much and instead of recording every 5 seconds, 4 minutes had been waited and the final temperature had been read. At this moment all of the heat-pipes (Except #0) were in a thermal equilibrium. | * After powering up fan and transistor, every 5 seconds a temperature reading was recorded from the temperature sensor. After 120 seconds the temperature would not vary very much and instead of recording every 5 seconds, 4 minutes had been waited and the final temperature had been read. At this moment all of the heat-pipes (Except #0) were in a thermal equilibrium. | ||
| - | | {{ http:// | + | | {{ https:// |
| ^ Testing four heat-pipes | ^ Testing four heat-pipes | ||
| ==== Results ==== | ==== Results ==== | ||
| ^ Compaq nx6110 nc6110 nx6120 nc6120 heat-pipe measurements | ^ Compaq nx6110 nc6110 nx6120 nc6120 heat-pipe measurements | ||
| - | | {{ http:// | + | | {{ https:// |
| ==== Conclusion ==== | ==== Conclusion ==== | ||
| * Heat-pipe #0 is clearly broken. Because energy was not released into the air via the cooling fins, the temperature rose at the copper area where the transistor was mounted. This can be seen in the graph. Further measurements at this heat-pipe had to be stopped to prevent damage to the transistor. | * Heat-pipe #0 is clearly broken. Because energy was not released into the air via the cooling fins, the temperature rose at the copper area where the transistor was mounted. This can be seen in the graph. Further measurements at this heat-pipe had to be stopped to prevent damage to the transistor. | ||
| * The largest differences were to be found between heat-pipe 1 and 3. At thermal equilibrium the temperature difference was about 4.5 °C. | * The largest differences were to be found between heat-pipe 1 and 3. At thermal equilibrium the temperature difference was about 4.5 °C. | ||
| * Heat-pipe #3 performs the best. At a room temperature of 22.1 °C, the final temperature when no further rise or fall can be detected is 35.9 °C. The dissipated power had been set to 18.5W. | * Heat-pipe #3 performs the best. At a room temperature of 22.1 °C, the final temperature when no further rise or fall can be detected is 35.9 °C. The dissipated power had been set to 18.5W. | ||
projects/mechanical/tests/heatpipes.txt · Last modified: 2019/09/22 11:03 by admin