Infrardeča termografska analiza LED svetil na keramični plasti

diplomsko delo Visokošolskega strokovnega študijskega programa I. stopnje Strojništvo

Jaka Purič (Author), Iztok Golobič (Mentor), Matevž Zupančič (Co-mentor)

Abstract

LED svetila intenzivno nadomeščajo žarnice z volframovo žarilno nitko, pri čemer je poleg doseganja dobrih optičnih lastnosti pomembno zagotavljati njihovo učinkovito hlajenje. V tej nalogi obravnavamo infrardečo termografsko analizo dveh različnih LED svetil na keramični plasti z debelinami od 0,25 mm do 5 mm. Razvita je bila eksperimentalna proga, ki omogoča napajanje LED svetila z omejevanjem električnega toka in napetosti ter sočasno spremljanje porabe električne moči in merjenja temperature s pomočjo hitrotekoče infrardeče kamere. V okviru meritev smo analizirali segrevanje keramičnih plasti različnih debelin, vpliv orientacije LED svetila, dinamični odziv segrevanja in čas, potreben za doseganje ustaljenega temperaturnega stanja pri različnih električnih močeh. Prikazani so tudi temperaturni profili in dvodimenzionalna temperaturna polja. Rezultati meritev kažejo, da razviti merilni postopek omogoča vrednotenje segrevanja LED svetil in določanja maksimalne dovoljene električne moči, da zadostimo temperaturnim omejitvam.

Keywords

diplomske naloge;infrardeča termografija;meritve;LED svetila;keramična plast;toplotna analiza;

Data

Language:	Slovenian
Year of publishing:	2020
Typology:	2.11 - Undergraduate Thesis
Organization:	UL FS - Faculty of Mechanical Engineering
Publisher:	[J. Purič]
UDC:	519.6:536(043.2)
COBISS:	32604931
Views:	368
Downloads:	96
Average score:	0 (0 votes)
Metadata:

Other data

Secondary language:	English
Secondary title:	Infrared thermographic analysis of LED lights on a ceramic layer
Secondary abstract:	LED lamps intensively replace incandescent lamps, and in addition to achieving good optical properties, it is important to ensure their efficient cooling. In this paper, the infrared thermographic analysis of two different LED lamps on a ceramic layer with thicknesses from 0.25 mm to 5 mm is considered. An experimental track has been developed that enables the power supply of LED lights by limiting current and voltage, while simultaneously monitoring electrical power consumption and temperature measurement using a high-speed infrared camera. As part of the measurements, the heating of ceramic layers of different thicknesses, the influence of LED light orientation, the dynamic heating response and the time required to achieve a steady-state temperature at different electrical powers were analyzed. Temperature profiles and two-dimensional temperature fields are also shown. The measurement results show that the developed measurement procedure enables the evaluation of the heating of LED lights and the determination of the maximum allowable electrical power in order to meet the temperature limits.
Secondary keywords:	thesis;infrared thermography;measurements;light-emitting diode;ceramic layer;thermal analysis;
Type (COBISS):	Bachelor thesis/paper
Study programme:	0
Embargo end date (OpenAIRE):	1970-01-01
Thesis comment:	Univ. v Ljubljani, Fak. za strojništvo
Pages:	XXII, 49 str.
ID:	12027691