Computer Evaluation of Results by Room Thermal Stability Testing

The paper deals with the use of computer tools for assessing of the thermal stability of buildings. It describes the procedure developed for determining of a time constant for cooling down of the room and a coefficient α whose values are related to the building’s thermal-accumulation properties. The developed methodological procedure is based on processing of the data obtained by measuring in the real building object, computer simulations in COMSOL Multiphysics software and subsequent processing of the output data in MAPLE and MATLAB software with regard to compliance with valid European and Czech technical standards used in building industry and Architecture. The studied model of the room showed the dependence of the time constant and the coefficient α on thickness and specific heat capacity of the thermal insulation of the external wall under the selected winter conditions. The studied example also proved correlation between the coefficient α and the time constant of the room. Key–Words: Thermal stability assessment, cooling down of the room, coefficient α, time constant of the room, computer simulation