Paper Conference

Proceedings of Building Simulation 2017: 15th Conference of IBPSA


Radiant Heat Emission System in a Passive House – Numerical Analysis of Comfort and Energetic Performance

Fabian Ochs1, Mara Magni2, Michele Bianchi Janetti1
1University of Innsbruck, Unit for Energy Efficient Buildings, Innsbruck
2University of Bologna, Bologna

Abstract: Radiant heating generally addresses all heat emission systems that have a share of radiant heat emission greater than 50 %, compared to a convector or fan coil where the heat is transferred mainly by means of convection. Recently, so-called infrared-heating systems are increasingly discussed as a cost-effective heating system. Relative small areas with high surface temperatures of typically up to 120 °C are used. In order to investigate in detail radiant heating systems, building models able to reproduce accurately the occurring physics phenomena are required. Physics-detailed steady state and transient room models have been developed in Matlab®. The required view factors for the radiative exchange between all surfaces and between each surface and a sphere representing a person are calculated using COMSOL®. Moreover, the thermal comfort in different positions of the room has been evaluated.
Pages: 1169 - 1175