Influence of usage profile on energy needs for heating and cooling in a building with thermally activated building systems

Abstract

Thermally activated building system (TABS) in office buildings is an energy-saving solution which uses the thermal mass of the building in order to stabilize the operative temperature in terms of thermal comfort. The influence of radiation temperature of activated surface on operative temperature and low operating parameters of the HVAC system enables the use of renewable energy sources. The paper presents the results of calculations made with a simple hourly method taking into account the thermal dynamics of the building zone with a thermally activated building system and the separation of the heat exchange method by radiation and convection (the resistance capacity 14R4C model). The analysed variants were used to assess the potential of using TABS for different usage profiles. The analysed variants were compared in terms of energy needs for heating and cooling and the characteristic temperature cycles for each variant were presented.