| Title |
Design Optimization of an Extruded-type Cooling Structure for Reducing the Weight of LED Streetlights |
| Authors |
Seung-Jae Park ; Tae-Hee Lee ; Kwan-Soo Lee |
| DOI |
http://dx.doi.org/10.6110/KJACR.2016.28.10.394 |
| Keywords |
방열 구조물 ; 자연 대류 ; 엘이디 ; 최적화 Cooling structure ; Natural convection ; LED ; Optimization |
| Abstract |
The configuration of an extruded-type cooling structure was optimized for the light-emitting diode (LED) streetlights that have recently replaced convectional metal halide streetlights for energy saving. Natural convection and radiative heat transfer over the cooling structure were simulated using a numerical model with experimental verification. An improved cooling structure type was suggested to overcome the previous performance degeneration, as confirmed by analyzing the thermal flow around the existing cooling structure. A parameter study of the cooling structure geometries was also conducted and, based on the numerical results, the configuration was optimized to reduce the weight of the cooling structure. Consequently, the mass of the cooling structure was reduced by 60%, while the thermal performance was improved by 10%. |