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Machine learning to predict junction temperature based on optical characteristics in solid-state lighting devices: A test on WLEDs
(MDPI, 2022-08)
While junction temperature control is an indispensable part of having reliable solid-state lighting, there is no direct method to measure its quantity. Among various methods, temperature-sensitive optical parameter-based ...
Pool boiling heat transfer in dielectric fluids and impact of surfaces on the repeatability
(ASME, 2022)
This study presents an experimental investigation on the nucleate boiling heat transfer (NBHT) in deionized (DI) water and HFE-7100 on bare copper surfaces. The experiments were performed under atmospheric condition at 0 ...
High brightness illumination based on laser light diffusion with mie scattering
(ASME, 2022)
Limited luminous flux per wafer area of light emitting diodes (LEDs) for high power solid state illumination causes some packaging real estate issues. This problem can be tackled with laser diodes (LDs). At high current ...
An experimental study on the frost formation over a flat plate: Effect of frosting on heat transfer
(Elsevier, 2023-06-01)
Frost accumulation on cooled surfaces generates thermal barrier between the surface and air. Apart from the frost layer thickness, the thermal properties of the frost also affect its heat transfer characteristics. In this ...
Thermal and optical performance characterization of bare and phosphor converted LEDs through package level immersion cooling
(Elsevier, 2022-06-15)
Increased demand for high flux electronics requires creative and affordable thermal management approaches to meet the performance and lifetime expectations. In the present study, optical and thermal improvements of a new ...
Effect of phase change materials on the optical path of LEDs for opto-thermal enhancement
(IEEE, 2023-05)
A novel concept based on the encapsulation of transparent phase change materials (PCMs) into the optical packaging structure of light-emitting diodes (LEDs) is presented in this article. The concept was initiated by ...
Saturated and superheated water vapor condensation on a custom micro-textured surface
(IEEE, 2023)
Condensation has a great importance for a large number of technologies such as heat exchangers, distillation columns, heat pipes, and thermal management systems. Vapor changes its phase into liquid when it contacts a surface ...
Direct numerical simulation of synthetic jet coupled to forced convection cooling in a channel flow
(IEEE, 2023)
A synthetic jet (SJ) is a microfluidic device that uses the 'zero-net-mass-flux' concept to create a compact cooling solution and provide a net positive momentum flux to the local environment. SJs have been studied extensively ...
Impact of oxidation on pool boiling heat transfer performance over flat plates exposed to extended operating conditions
(IEEE, 2023)
Phase change heat transfer is utilized in a number of high heat flux applications. In order to ensure reliable functionality at moderate temperatures, one has to guarantee a stable long-term operation. In this experimental ...
An Eulerian multiphase frost model based on heat transfer measurements
(Elsevier, 2023-12-01)
In this paper, a laminar numerical model is developed to predict frost formation over a horizontal cold flat surface. An Eulerian-Eulerian multiphase approach is followed to model humid air and ice phases separately. Frost ...
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