Research into the junction temperature and power of new led modules generation in dependence on variable parameters
Küçük Resim Yok
Tarih
2020
Yazarlar
Dergi Başlığı
Dergi ISSN
Cilt Başlığı
Yayıncı
LLC Editorial of Journal ""Light Technik""
Erişim Hakkı
info:eu-repo/semantics/closedAccess
Özet
In this research, the change in the junction temperature and luminous flux of a new generation LED module depending on variables such as radiation, lens piece, ambient temperatures, currents, and quantity of elements had been studied. Commercial software FloEFD2019 was used in the finite volume analysis made during the study. The analyses were verified by experiments. On basis of the analysis, a solution was obtained that does not depend on the number of elements. The force of gravity was taken into account. While the ambient temperatures were taken as Ta = 23 °C and 40 °C, and the radiation value as 1009 W/m2, currents as 140 mA, 160 mA, 180 mA, 200 mA, 220 mA and 240 mA, meanwhile, samples numbers on PCB were taken as 101 and 202. In order to determine the effect of the lens piece located on the LED module, the analysis was repeated with and without using the lens. As a result of the study, it was found that the increase in ambient temperature and radiation has an adverse effect on the temperature Tj and luminous flux. It has been observed that changing samples number has a negligible effect on luminous flux and temperature Tj. It was found that the use of radiation and lenses are the most important factors affecting the luminous flux of the module. © 2020, LLC Editorial of Journal ""Light Technik"". All rights reserved.
Açıklama
Anahtar Kelimeler
Computational fluid dynamics (CFD), Junction temperature, Laminar natural convection, LED automotive lamp, Monte Carlo method of radiation
Kaynak
Light and Engineering
WoS Q Değeri
Scopus Q Değeri
Q3
Cilt
28
Sayı
5
