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The energy-efficient renovation of Hungary’s heritage buildings presents challenges due to the scarcity of reliable thermal and hygrothermal data for historical masonry materials. This study integrates laboratory-measured material properties into advanced thermal and hygrothermal simulations of wall-slab connections. It examines historically common and modern slab types, providing insights into their energy performance. Extensive laboratory testing determined thermal and moisture-related properties for both traditional Hungarian bricks and modern masonry materials, ensuring high accuracy in simulation inputs. Three-dimensional models of Prussian, Monier, Horcsik and Bohn slabs were created and analyzed using Comsol Multiphysics. Steady-state thermal simulations followed ISO 10211:2017 standards, while coupled heat and moisture transport simulations adhered to EN 15026:2022, incorporating latent heat fluxes and material moisture behavior. This dual approach enabled the evaluation of heat losses, linear thermal transmittance, and temperature factors, crucial for assessing the durability and hygrothermal resilience of wall-slab connections. The study underscores the significance of precise material characterization for reliable simulation results. Historical slab structures, built 100–150 years ago without modern insulation, exhibit considerable thermal challenges. By integrating laboratory data into simulations, the research assesses the performance of historical materials under contemporary energy standards and identifies strategies for energy-efficient renovation. Findings guide the development of optimal layering designs that balance durability and thermal efficiency. While historical configurations show notable heat losses and thermal bridging, targeted interventions based on simulation data offer effective mitigation. This study provides a comprehensive framework for integrating material-specific data into energy performance analyses, equipping architects and engineers with tools to preserve heritage buildings while enhancing energy efficiency. It also lays the groundwork for future research on historical masonry materials and sustainable building practices.

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Coupled Heat and Moisture Transport Simulation of Hungarian Historical Wall-Slab Connections

  • 会议论文

  • 发表日期：

    2026年

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  • Fanni Petresevics,
  • Balázs Nagy

摘要

The energy-efficient renovation of Hungary’s heritage buildings presents challenges due to the scarcity of reliable thermal and hygrothermal data for historical masonry materials. This study integrates laboratory-measured material properties into advanced thermal and hygrothermal simulations of wall-slab connections. It examines historically common and modern slab types, providing insights into their energy performance. Extensive laboratory testing determined thermal and moisture-related properties for both traditional Hungarian bricks and modern masonry materials, ensuring high accuracy in simulation inputs. Three-dimensional models of Prussian, Monier, Horcsik and Bohn slabs were created and analyzed using Comsol Multiphysics. Steady-state thermal simulations followed ISO 10211:2017 standards, while coupled heat and moisture transport simulations adhered to EN 15026:2022, incorporating latent heat fluxes and material moisture behavior. This dual approach enabled the evaluation of heat losses, linear thermal transmittance, and temperature factors, crucial for assessing the durability and hygrothermal resilience of wall-slab connections. The study underscores the significance of precise material characterization for reliable simulation results. Historical slab structures, built 100–150 years ago without modern insulation, exhibit considerable thermal challenges. By integrating laboratory data into simulations, the research assesses the performance of historical materials under contemporary energy standards and identifies strategies for energy-efficient renovation. Findings guide the development of optimal layering designs that balance durability and thermal efficiency. While historical configurations show notable heat losses and thermal bridging, targeted interventions based on simulation data offer effective mitigation. This study provides a comprehensive framework for integrating material-specific data into energy performance analyses, equipping architects and engineers with tools to preserve heritage buildings while enhancing energy efficiency. It also lays the groundwork for future research on historical masonry materials and sustainable building practices.