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Thermal Adversity in Solid-State Lighting


T. Dreeben1
1OSRAM SYLVANIA, Beverly, MA, USA


Temperature in the room and ceiling cavity surrounding a recessed LED fixture. Velocity vectors of the room air are driven by natural convection.

COMSOL Multiphysics is used to simulate natural convection and its impact on peak operating temperatures of solid-sate lighting in thermally adverse conditions. PDE modes in the general form are used in conjunction with a thin-surface conduction formulation in the weak form. COMSOL is used to predict both temperatures and heat flows through numerous components of the configuration. Model output is used to evaluate different designs and construct plausible explanations for why different designs behave the way that they do.

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