Field evaluation of the performance of a radiant heating/cooling ceiling panel system

Abstract

This paper presents the results of a field study of the performance of a water-based radiant ceiling system in relation to its heating capacity and thermal comfort in a room. Based on the theoretical equations for the heat flux between ceiling systems and the resistance model recommended in ISO 11855-2 and EN 14240, measurements were implemented when the room was in the heating mode. The heat flow between the ceiling panels and the room was also calculated based on the theoretical model in ISO 11855-2. The result of this calculation was compared with the experimental data to verify the accuracy of the measurements. The comparison shows good agreement between the theoretical heat flow and the measured data. Based on the experimental data, the upward heat transfer coefficients were also calculated. The thermal comfort measurement showed that the air and operative temperature distributions in the room were highly uniform.