Enhancing Sustainable Building Insulation with Clay-Eggshell Composites: Dynamic Thermal Simulations and Comfort in Morocco
Year: 2026
Type: preprint
Abstract: This study investigates the integration of a bio-sourced building material-specifically, conventional clay enhanced with 10% eggshell powder-into the envelope of a typical two-level building in Morocco. The thermophysical characterization of this composite (thermal conductivity, specific heat capacity, and density) was implemented into EnergyPlus to evaluate its application at the whole-building scale through dynamic thermal simulations. The research quantifies the composite's impact on indoor temperatures, energy consumption, and thermal comfort across three representative Mo-roccan climates: Casablanca (Nouacer), Tangier, and Nador. The simulation results demonstrate that integrating the 10% eggshell composite into the building envelope reduces heating and cooling energy demands by up to 40% compared to conventional clay. Furthermore, the material significantly improves indoor thermal comfort by re-ducing total annual discomfort hours outside the thermal comfort setpoint range (20.00-24.00 °C) by up to 40%, offering a viable pathway for greening the building stock through agricultural waste valorization.
Source: Preprints.org
Language: English
Subfield: Building and Construction
Field: Engineering
Domain: Physical Sciences
Open Access status: green
OpenAlex ID: W7204479617