Work

Experimentally validated transient enthalpy-based FEM model for PCM-integrated building materials with advanced thermal and energy efficiency insights

Year: 2025

Type: article

Abstract: ABSTRACT This study presents a high-fidelity finite element method (FEM) framework for modelling the thermal performance of phase change material (PCM)-integrated building materials, validated against experimental data. The model accurately captures transient thermal dynamics, including latent heat storage and release, subcooling effects, natural convection, and the influence of embedded aluminum fins. Through extensive parametric analysis, the model reveals critical insights into temperature profiles, phase boundary evolution, entropy generation, and energy efficiency across different material depths. Compared to experimental observations, the FEM predictions exhibit strong correlation, offering deeper understanding of PCM behaviour under dynamic conditions. Additionally, thermal response time maps and solid fraction distributions provide novel performance metrics not captured in conventional experimental studies. The framework's adaptability across different PCM formulations and building configurations underscores its utility as a robust design tool for optimizing PCM placement, layer thickness, and thermal management strategies in energy-efficient buildings.

Source: Case Studies in Thermal Engineering

DOI: 10.1016/j.csite.2025.106374

Authors: Ajitanshu Vedrtnam, Kishor Kalauni, Nelson Soares

Institutions: Invertis University, Slovak Academy of Sciences, Institute of Construction and Architecture of the Slovak Academy of Sciences, University of Coimbra

Language: English

Topic: Phase Change Materials Research

Subfield: Mechanical Engineering

Field: Engineering

Domain: Physical Sciences

SDG: Affordable and clean energy

Open Access status: gold

Estimated APC paid: $1,620