Inverse Solution to the Net Radiation Heat Flux of Paint and Coloured Drawing Surfaces under Artificial Lighting
Inverse problems in science & engineering/Inverse problems in science and engineering(2012)
Abstract
A numerical method is used to inversely solve the net heat flux radiated to the red pine external surfaces with black and white paint and coloured drawing under four types of artificial light: high-pressure sodium lamp, tungsten halogen lamp, metal halide lamp and fluorescent lamp. Firstly, the temperature values of the external surface centre and the internal centre of the samples are obtained through experiments by using thermocouple. Secondly, a finite-volume method is used to fit the experimental values by changing the net heat flux radiated to the external surface. The results show that the net heat flux under artificial light sources with low power and close distance lighting is one order lower than the net heat flux under solar radiation. For different artificial light sources, the characteristics of the net heat flux have certain universality.
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Key words
artificial light sources,net heat flux,timber components with paint and coloured drawing,numerical simulation
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