Research output: Contribution to journal › Article › peer-review
Thermal management of high-power LED module with single-phase liquid jet array. / Gatapova, Elizaveta Ya; Sahu, Gopinath; Khandekar, Sameer et al.
In: Applied Thermal Engineering, Vol. 184, 116270, 05.02.2021.Research output: Contribution to journal › Article › peer-review
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TY - JOUR
T1 - Thermal management of high-power LED module with single-phase liquid jet array
AU - Gatapova, Elizaveta Ya
AU - Sahu, Gopinath
AU - Khandekar, Sameer
AU - Hu, Run
N1 - Publisher Copyright: © 2020 Elsevier Ltd
PY - 2021/2/5
Y1 - 2021/2/5
N2 - 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.
AB - 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.
KW - Direct liquid impingement
KW - High-power LED module
KW - Jet array
KW - LED cooling
KW - Thermal management
KW - COOLING SYSTEM
KW - SINK
KW - GAS
KW - HEAT-TRANSFER CHARACTERISTICS
KW - FLOW
UR - http://www.scopus.com/inward/record.url?scp=85096609906&partnerID=8YFLogxK
U2 - 10.1016/j.applthermaleng.2020.116270
DO - 10.1016/j.applthermaleng.2020.116270
M3 - Article
AN - SCOPUS:85096609906
VL - 184
JO - Applied Thermal Engineering
JF - Applied Thermal Engineering
SN - 1359-4311
M1 - 116270
ER -
ID: 26136031