Optimization of the Design of a Greenhouse LED Luminaire with Immersion Cooling DOI Creative Commons
Pavel V. Tikhonov, Alexander Smirnov, Yuri A. Proshkin

et al.

AgriEngineering, Journal Year: 2024, Volume and Issue: 6(3), P. 3460 - 3473

Published: Sept. 19, 2024

Modern agriculture, with the use of artificial lighting, requires high-intensity LED luminaires compact dimensions. In this regard, new approaches to design using both materials and technical solutions have been considered. The theoretical evaluation influence different on efficiency removal thermal energy from LEDs was shown. A material PMS-5 is proposed evaluated as an immersion liquid, which can be used effective heat sink in lower part luminaire up level located top light luminaires. polymethylsiloxane liquid has more than twice conductivity (0.167 W/(m·K)) HFE7200 NS15 liquids immersion-cooled Based evaluation, requirements for parameters, such metal profile area, volume, wall thickness external area cylinder, are highlighted noted parameters a key role efficient luminaire. It shown that significantly affects it necessary specialized profiles optimized diameter cylinder. number designs were proposed, depending properties construction materials, economic performance, well actual operating installation conditions. analysis presented evaluations allowed overlay basis within concept light.

Language: Английский

An Mg-1Zn-1Cu-xCe alloys with both high ductility and high thermal conductivity DOI

Yunhan Xing,

Jin-Chu Luo,

Qiuju He

et al.

Journal of Alloys and Compounds, Journal Year: 2025, Volume and Issue: unknown, P. 180247 - 180247

Published: April 1, 2025

Language: Английский

Citations

1

A review of state of the art fabrication approaches for efficiency improvement in ultra-violet region light emitting diodes DOI

Indrani Mazumder,

Kashish Sapra, Ashok Chauhan

et al.

Materials Science in Semiconductor Processing, Journal Year: 2025, Volume and Issue: 189, P. 109270 - 109270

Published: Jan. 13, 2025

Language: Английский

Citations

0

Synthesis and Photoluminescence Properties of Eu3+‐Activated Ba2Cd(BO3)2 Red‐Emitting Phosphors for Near‐Ultraviolet Excited White Light‐Emitting Diodes DOI Creative Commons
S. B. Töreli, V. Emir Kafadar, Fatih Mehmet Emen

et al.

Luminescence, Journal Year: 2025, Volume and Issue: 40(3)

Published: Feb. 26, 2025

ABSTRACT A new class of rare‐earth doped borate phosphors, Ba 2 Cd(BO 3 ) : x Eu 3+ ( = 2, 3, 4, 5, and 6 mol%), was synthesized using the high‐temperature solid‐state reaction technique in air. X‐ray diffraction (XRD) confirmed phase formation , while Fourier transform infrared spectroscopy (FT‐IR) revealed presence trigonal [BO ] units. The surface morphology studied field emission scanning electron microscopy (FE‐SEM), energy dispersive (EDS) identified elements. Photoluminescence (PL) analysis showed that phosphors emitted at 592, 613, 652, 701 nm, corresponding to 5 D 0 → 7 F 1 4 transition ions, respectively. 613 nm red emission, from transition, strongest for mol% sample. intensity increased with concentration, peaking mol%. CIE chromaticity, correlated color temperature (CCT), purity calculations acceptable coordinates (0.6426 0.3548), a low CCT value (2355 K), high (91.34%), making ‐doped phosphor ideal light white light‐emitting diodes (WLEDs).

Language: Английский

Citations

0

Thermal characteristics of a compact cooling system of a powerful LED lighting device based on a spiral heat exchanger and heat pipes DOI
D.V. Pekur,

Yu. E. Nikolaenko,

Sergii Khairnasov

et al.

Thermal Science and Engineering Progress, Journal Year: 2025, Volume and Issue: unknown, P. 103483 - 103483

Published: March 1, 2025

Language: Английский

Citations

0

Numerical investigation of jet cooling for high-power LEDs using Al2O3-water nanofluid with a multi-nozzle array DOI Creative Commons
Zhuang Li,

Wenbin Xin,

Danzhu Ma

et al.

Case Studies in Thermal Engineering, Journal Year: 2025, Volume and Issue: unknown, P. 106083 - 106083

Published: April 1, 2025

Language: Английский

Citations

0

Recent Advancements of Light-Emitting Diodes in Dairy Industries DOI

Pranavi KS,

Shaik Basha, A. Chattopadhyay

et al.

Trends in Food Science & Technology, Journal Year: 2025, Volume and Issue: unknown, P. 105018 - 105018

Published: April 1, 2025

Language: Английский

Citations

0

Microstructure and thermal conductance of the AlN-on-sapphire heterostructure prepared by metal-organic chemical vapor deposition DOI
Lühua Wang, Jing Zhou,

Xujun Su

et al.

Vacuum, Journal Year: 2025, Volume and Issue: unknown, P. 114335 - 114335

Published: April 1, 2025

Language: Английский

Citations

0

Cr3+/Yb3+ Codoped Cs2NaInCl6 Double Perovskites for Near-Infrared Light-Emitting Diodes DOI
Xinyu Fu,

Huwei Li,

Hongxia Yue

et al.

Inorganic Chemistry, Journal Year: 2025, Volume and Issue: unknown

Published: April 22, 2025

Near-infrared (NIR) light-emitting diodes (LEDs) are potential devices that could become the core components in biological imaging, security monitoring, etc., which currently constrained by suboptimal luminous efficiency due to absence of excellent luminescent materials. Here, we report a double perovskite Cs2NaInCl6 is suitable for Cr3+ doping and exhibits broad NIR emission. Through direct absorption energy transfer (ET) from self-trapped excitons (STEs) induced matrix, can be excited 4T1(P), 4T1(F), 4T2(F) levels. Then, emission with full width at half-maximum (FWHM) ∼150 nm, spanning 800 1300 high photoluminescence quantum yield (PLQY) up 70% realized, resulting 4T2→4A2 transition Cr3+. Subsequently, introduction Yb3+ endows Cs2NaInCl6:Cr3+,Yb3+ higher PLQY 76% optimal ratio than Cs2NaInCl6:Cr3+. Ultimately, miniaturized LED device packaged based on Cs2NaInCl6:15%Cr3+,15%Yb3+ has been fabricated, demonstrates superior performance night vision, traceless perspective detection, imaging. This work not only screens out matrix but also promotes its luminescence through applications.

Language: Английский

Citations

0

Multi-objective optimization of a cylindrical heat sink with straight and forked fins using artificial neural network (ANN) DOI
J.C. Choi, Seung‐Woo Lee, Seung‐Hyuk Choi

et al.

International Communications in Heat and Mass Transfer, Journal Year: 2025, Volume and Issue: 165, P. 109082 - 109082

Published: May 13, 2025

Language: Английский

Citations

0

Investigating the thermal performance of radial heat sinks with semicircular fins: a CFD and experimental approach DOI Creative Commons
Yousif Hashim Hussein, Abdulrazzak Akroot, Samet Uslu

et al.

Journal of Thermal Analysis and Calorimetry, Journal Year: 2025, Volume and Issue: unknown

Published: May 29, 2025

Language: Английский

Citations

0