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Heat, Air, and Moisture (HAM) Modeling of Historic Windows

H.L. Schellen[1]
[1]Eindhoven University Of Technology, Eindhoven, The Netherlands

Windows are the thermal weakest places in the external envelop of buildings. This is true for historic windows with original single pane glazing in historic buildings. To reduce the energy consumption and to improve thermal comfort of historic buildings, replacing these windows by modern double glazed windows affects the authentic character of these buildings too much. One way to improve the thermal performance of these windows is adding a single glazing pane from the inside or outside to the existing single pane glazing, using a (ventilated) cavity. COMSOL will be used to solve the multi-physical coupling of the differential equations for Heat, Air and Moisture (HAM). Generally, good results are obtained by numerical simulation, compared to measurement results.