Abstract
The article presents the results of experimental and theoretical works aimed at determining the distribution of heat emitted by an obstacle lighting lamp. These kind of lamps are commonly applied as a warning for air traffic vehicles. There is a need for lighting devices with various intensities, whose application depends on the location and operating conditions. The overall aim of the author’s work is to develop a computer model that would enable us to conduct research aimed at determining the optimal parameters of lamp operation without the need to build many physical models. Measurements of heat emitted by a currently manufactured lamp were made, and based on these, a numerical model of the lamp operating under laboratory conditions was developed. The considered lamp has two heat sources, one of which is light-emitting diodes (LEDs), while the other heat source consists of stabilizers and other elements of the lamp power supply system. After positive experimental verification of the numerical model, theoretical analyses of heat emission under various meteorological conditions were carried out, while the values of ambient temperature and airflow velocity were changed; then, the influence of these parameters on the temperature distribution on the surface of the lamp was determined.
Highlights
The subject matter of the article is related to obstacle lighting lamps working in air traffic safety systems
Nowadays, such lamps are a crucial part of the warning system for air traffic vehicles due to the expansion of the world’s aerial navigation [1]
The other parameter values assumed in the numerical model are as follows: the heat source simulating the heat emitted due to the operation of light-emitting diodes (LEDs) was defined as the heat rate equal to QLED = 29 W/m2, the heat source simulating the heat emitted due to the operation of stabilizers was defined as the heat rate equal to QSTAB = W/m2, the ambient temperature Tamb was varied in the range from to 44 ◦ C, but for the verification process
Summary
The subject matter of the article is related to obstacle lighting lamps working in air traffic safety systems Nowadays, such lamps are a crucial part of the warning system for air traffic vehicles due to the expansion of the world’s aerial navigation [1]. Depending on the particular location, it may be a hot or cold climate; there exists a need for the lamps to operate under different weather and environmental conditions. Nowadays, it is a frequent procedure in the industry to perform computer simulations for complex systems instead of building numerous physical models of a device, which leads to savings in time and money [3]. The numerical model, the measurement, and theoretical investigations results are presented
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