Abstract
An autonomous underwater vehicle (AUV) is invariably equipped with a self-contained power supply. If the power consumption of the vehicle is lowered, its working time and performance will be enhanced. For the foregoing purpose, the research aims at developing high-brightness LED headlights to replace conventional high-pressure mercury lamps. In the research, high-brightness LEDs often develop hot-spot problems which result in a huge increase of local temperatures and reduces their service life and brightness. Therefore, the paper presents self-adaptive micro heat spreaders to eliminate the problem of high thermal density, approximately 100 W/cm2, and to provide constant high-brightness illumination in agreement with the various undersea positions of the AUV. A composite moisture-retaining structure is fabricated using a LIGA-like process and it is incorporated by the self-adaptive micro heat spreader. The unique structure improves the moisture-retaining efficiency of the micro devices in the heat spreader. As a result, the newly-designed heat spreader maintains the original thermal equilibrium and heat dissipation capabilities, eliminates the effect of gravity on the working fluid, and lifts the restraint imposed on the two-phase heat-dissipation device in the dynamic mechanism. With this feature, the new heat spreader is suitable for LED headlights of AUVs, helping reduce power consumption.
| Original language | English |
|---|---|
| Pages (from-to) | 137-145 |
| Number of pages | 9 |
| Journal | Applied Ocean Research |
| Volume | 32 |
| Issue number | 2 |
| DOIs | |
| Publication status | Published - 2010 Apr 1 |
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All Science Journal Classification (ASJC) codes
- Ocean Engineering
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Self-adaptive heat spreader with a micromesh using LIGA-like technology for AUV LED headlight. / Shen, S. C.; Huang, H. J.; Hsieh, J. C.; Shaw, H. J.
In: Applied Ocean Research, Vol. 32, No. 2, 01.04.2010, p. 137-145.Research output: Contribution to journal › Review article
TY - JOUR
T1 - Self-adaptive heat spreader with a micromesh using LIGA-like technology for AUV LED headlight
AU - Shen, S. C.
AU - Huang, H. J.
AU - Hsieh, J. C.
AU - Shaw, H. J.
PY - 2010/4/1
Y1 - 2010/4/1
N2 - An autonomous underwater vehicle (AUV) is invariably equipped with a self-contained power supply. If the power consumption of the vehicle is lowered, its working time and performance will be enhanced. For the foregoing purpose, the research aims at developing high-brightness LED headlights to replace conventional high-pressure mercury lamps. In the research, high-brightness LEDs often develop hot-spot problems which result in a huge increase of local temperatures and reduces their service life and brightness. Therefore, the paper presents self-adaptive micro heat spreaders to eliminate the problem of high thermal density, approximately 100 W/cm2, and to provide constant high-brightness illumination in agreement with the various undersea positions of the AUV. A composite moisture-retaining structure is fabricated using a LIGA-like process and it is incorporated by the self-adaptive micro heat spreader. The unique structure improves the moisture-retaining efficiency of the micro devices in the heat spreader. As a result, the newly-designed heat spreader maintains the original thermal equilibrium and heat dissipation capabilities, eliminates the effect of gravity on the working fluid, and lifts the restraint imposed on the two-phase heat-dissipation device in the dynamic mechanism. With this feature, the new heat spreader is suitable for LED headlights of AUVs, helping reduce power consumption.
AB - An autonomous underwater vehicle (AUV) is invariably equipped with a self-contained power supply. If the power consumption of the vehicle is lowered, its working time and performance will be enhanced. For the foregoing purpose, the research aims at developing high-brightness LED headlights to replace conventional high-pressure mercury lamps. In the research, high-brightness LEDs often develop hot-spot problems which result in a huge increase of local temperatures and reduces their service life and brightness. Therefore, the paper presents self-adaptive micro heat spreaders to eliminate the problem of high thermal density, approximately 100 W/cm2, and to provide constant high-brightness illumination in agreement with the various undersea positions of the AUV. A composite moisture-retaining structure is fabricated using a LIGA-like process and it is incorporated by the self-adaptive micro heat spreader. The unique structure improves the moisture-retaining efficiency of the micro devices in the heat spreader. As a result, the newly-designed heat spreader maintains the original thermal equilibrium and heat dissipation capabilities, eliminates the effect of gravity on the working fluid, and lifts the restraint imposed on the two-phase heat-dissipation device in the dynamic mechanism. With this feature, the new heat spreader is suitable for LED headlights of AUVs, helping reduce power consumption.
UR - http://www.scopus.com/inward/record.url?scp=77955175912&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=77955175912&partnerID=8YFLogxK
U2 - 10.1016/j.apor.2009.10.009
DO - 10.1016/j.apor.2009.10.009
M3 - Review article
AN - SCOPUS:77955175912
VL - 32
SP - 137
EP - 145
JO - Applied Ocean Research
JF - Applied Ocean Research
SN - 0141-1187
IS - 2
ER -