Optimization of a 3-D high-power LED lamp: Orthogonal experiment method and experimental verification

Abstract

The temperature distribution in a 3-D high-power light emitting diode(LED)lamp is affect by multiple factors, the orthogonal experiment method is adopted to elucidate three main factors, an experiment is designed to verify the main finding, which is useful for an optimal design of the LED lamp.

Optimization and application of temperature field in rapid heat cycling molding

“…The heat transfer process of the entire RHCM system is a three-dimensional transient heat conduction problem with an internal heat source. The governing equation was described as follows [9,10].…”

“…To reduce inhomogeneity of the products properties, it is key that filling with high temperature and cooling with low temperature during a production cycle. Several techniques based on temperature control have been suggested to improve the quality of molded parts, mainly named rapid heating cycle molding (RHCM) technologies [2][3][4][5][6][7][8][9][10], such as flame heating [2], hot liquid medium (water and oil) heating [3], steam heating [4], infrared heating [5], induction heating [6,7], electric heating rod [8] and so on. The RHCM is a technology keeping high mold temperature during filling while lowering the mold temperature to below a certain value during the post-filling/cooling without a large increase in production cycle and energy consumption.…”

“…Quantitative evaluation of RHCM by means of analytical and numerical methods is regarded as an important means to optimize and design a capable mold temperature control system [1,[8][9][10][11][12][13]. Xiao et al [1] applied particle swarm optimization and finite element method to optimize an electric-heating system for a blow molding of an automotive spoiler, and the surface quality of products was dramatically improved.…”