Thermal management of multiple LEDs for high-power lighting applications
Journal Title: International Journal of Experimental Research and Review - Year 2023, Vol 36, Issue 7
Abstract
Power LED lighting has suffered from substantial heat generated, leading to significant performance degradation. Consequently, achieving an optimal distribution of LEDs is essential to ensure high luminance efficiency. Implementing effective thermal treatment is important to prevent any potential degradation in the performance of the LED lighting system. Optimizing the arrangement of individual LEDs is a promising approach to mitigating heat accumulation issues. In this paper, we propose a reasonable approach to obtaining the optimal distribution of LED lighting systems under DC biasing and PWM operating conditions. The thermal analysis simulation was performed based on the theoretical assumption to evaluate the thermal distribution of a single LED. Thermal analysis was conducted on an LED lighting system with 20 LEDs, and the distance between LEDs ranged from 4 mm to 24 mm. The simulated analysis showed that the maximum temperature could be controlled from 65.1 ℃ to 58.7 ℃. We discussed the optimum arrangement of LEDs and how heat generated by an LED influences the system. In addition, the LED lighting was operated in PWM mode to mitigate the thermal issues. The relationship between luminance efficiency and operation condition is discussed. Thus, the luminance efficiency improved from 114.8 lm/W to 126.8 lm/W, and the thermal relaxation time was no longer than 0.013 s. The process of determining the optimal distance between LEDs was very effective in achieving an optimized power operating condition and LEDs distribution in the module for a compact volume and enhanced performance.
Authors and Affiliations
Ju Yong Cho, Won Kweon JANG
Keywords
Related Articles
- EP ID EP726766
- DOI 10.52756/ijerr.2023.v36.021
- Views 61
- Downloads 0
Exploration of ethno-medicinal herbs and their practices by indigenous people of Achanakmar regions of Chhattisgarh State, India
The study was performed in the Achanakmar regions of Chhattisgarh state, India. At the study site, a total of 54 herbaceous medicinal plants belonging to 30 families were documented. Between March 2020 and March 2022, i...
Implications of Cyber-Physical Adversarial Attacks on Autonomous Systems
This study examines hostile cyber-physical assaults on autonomous systems and proposes a novel approach. The recommended strategy integrates many domains, evaluates data quantitatively, and emphasizes real-world applicat...
Formulation and evaluation of organic handwash prepared from herbal extracts
The scientific study linked to the physical, chemical, biological, and structural characterization of drugs along with their history of cultivation, collection and preparation for marketing and preservation, is defined a...
Alcoholic Extracts of Eleusine indica as Alternative Diuretic Regimens: A Computational Based Investigation
Diuretics are widely used in current clinical practice to increase urine production and excrete electrolytes, particularly sodium and chloride ions, without affecting the absorption of protein, vitamins, carbohydrates, o...
Improvement of Flow Properties of Highly Waxy Crude Oil with the application of SiO2 and Graphene Oxide nanoparticles aided by Light Crude Oil
The rheological behaviour of crude oil mixtures comprising both heavy and light components along with chemical additives is of significant interest due to its relevance in the petroleum industry. Understanding the flow p...