Numerical Modeling of Lighting/HVAC Interaction in Enclosures Part II: Effect of Including a Fluorescent Lamp Positive Column Model

Abstract

A numerical model of the fluorescent lamp positive column suitable for use in simulating the interaction between lighting and HVAC systems in enclosures is presented. The model was modified from existing models in the literature to include only sufficient details for simulating the conversion of electric energy into light and heat. Details of the fluorescent lamp positive column model are described. The model presented was incorporated within an existing model, LITEAC1 (described in Part I), that had been used for modeling the interaction between lighting and HVAC systems in enclosures. The resulting model, called LITEAC2, was tested by simulating the performance of a fluorescent lamp in a laboratory constructed test cell. It was found that the positive column model enabled better predictions for the lighting/air-conditioning interaction, and improved the modeling of illuminance on room surfaces.