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LED street lamp radiator natural convection problem solutions

by:SRS     2021-04-28
In view of the high power LED solar street light, heat dissipation problems, scholars at home and abroad or maker did a lot of work on the radiator structure and materials. The thermal resistance of equivalent circuit method is used to calculate the high power LED street light illuminator, thermal resistance, and to estimate the surface area of the radiator, and then use Icepak software modeling analysis, change the structure of the radiator geometric parameters, through comparative analysis it is concluded that the fin height changes * obvious influence on the cooling performance. Here with finite element software for its thermal analysis cooling structure, aluminum heat sink is analyzed the influence of different structure parameters on the temperature field. Through the simulation optimization, effectively reduce the quality of the radiator, optimize the structure of the radiator. Based on the semiconductor thermoelectric element and heat pipe technology to control the LED solar street light heat dissipation, and add a waste heat recovery system, complicated structure, attachment, influence the stability of its work. Design a variety of high-power LED radiator model, but for each radiator, in the process of simulation analysis of natural convection on the surface adopt fixed value average heat transfer coefficient. Although the calculation area only radiator itself, greatly simplifies the calculation, reduce the computing time, convenient and radiator design, but because of the complexity of the geometric structure, the average heat transfer coefficient must be corrected through repeated experiment and numerical calculation to be accurate. In order to meet the LED street lamp radiator natural convection coupling calculation, the accuracy of air flow field must be large enough, the large space to apply pressure inlet boundary conditions. But the field is too large, the radiator requires enough around the dense grid, too much can cause division of grid, computer resources, Memory, CPU) Is insufficient, the calculation is too slow. So we need to computational domain USES the multi-layer grid. Near the radiator and radiator air flow area can use smaller grid cell interval dividing, far away from the radiator air flow area can use thin grid. This can reduce the amount of calculation, shorten the calculation time. Dear customer: hello, our company is a strong technical force of the development of high quality, for the majority of users with high-quality products and complete solutions and the best technical services company. The main products are light, solar street light manufacturers yangzhou high lamp gaoyou street lamp factory, etc. This enterprise uphold sincerity, with the purpose of the implementation of quality and with enterprising societe generale, with a firmer step climb the new peak unceasingly, contribute to national automation industry, welcome new and old customers to rest assured the choose and buy the desired products. We will serve you wholeheartedly!
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