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An improved algorithm for thermal dynamic simulation of walls using Z-transform coefficients

Author(s): G. Beccali, M. Cellura, V. Lo Brano & A. Orioli Abstract: The Transfer Function Method (TFM), recommended by American Society of Heating, Refkigerating and Air-conditioning Engineers (ASHRAE), is one of the most modern tools available to solve heat transfer problems in building envelopes and environments. TFM utilises Z-transform to solve the equations system that describes the heat transfer in a multi-layered wall. Due to an analogy with an electric circuit, it is possible to write the equations system in a matrix suitable to be solved by computer. Authors carried out an analysis on an historical building placed in the south of Italy to test the reliability and the quality of the thermal dynamic simulation using TFM. The analysis is performed using some control systems tools like Bode plots, step response, root an... Pages: 10 Size: 375 kb Paper DOI: 10.2495/CMEM030681

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