Аннотация
Next generation high-power Light–Emitting Diodes (LED) require specialized cooling systems for ensuring performance and reliability. The ability of a multi-jet single-phase liquid cooling system (jet diameter 400 µm) for thermal management of the high-power LED based luminaire is investigated and successfully demonstrated for a 300 W nominal power module. Operating pressure of the jet system is varied in the range of 0–8 bar, leading to coolant water flow rates varying from 65 ml/min to 782 ml/min (Re = 3833–46 119). With the proposed multi-jet cooling system, the experiments show the possibility of maintaining the module surface temperature well below 70 °C for substrate level heat flux up to ~125 W/cm2. We show that the system can still maintain safe operating temperature, without loss of luminous efficiency for input power up to 130% of the nominal design power. Supporting detailed three-dimensional numerical simulations of the conjugate module heat transfer inside the LED package volume are provided. It is concluded that single-phase array of water-based jet flow is an excellent potential option for thermal management of high-power LED luminaire.
Язык оригинала | английский |
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Номер статьи | 116270 |
Число страниц | 9 |
Журнал | Applied Thermal Engineering |
Том | 184 |
Ранняя дата в режиме онлайн | 7 ноя 2020 |
DOI | |
Состояние | Опубликовано - 5 фев 2021 |