Experimental and Numerical Investigation of Heat Transfer Characteristics of Double-Layer Phase Change Walls for Enhanced Thermal Regulation in Summer Climates

Buildings, Journal Year: 2025, Volume and Issue: 15(6), P. 962 - 962

Published: March 19, 2025

This study employs the effective heat capacity method within COMSOL simulation framework to analyze thermal performance of double-layer phase-change walls under typical summer climatic conditions in Zhengzhou, Henan Province. The model considers a wall structure with total thickness 100 mm and height 300 mm, where exterior surface represents outdoor environment, interior indoor top bottom boundaries are assumed be adiabatic. A highly refined triangular mesh ensures numerical stability solution accuracy. Special attention is given influence Micro-PCM content on storage characteristics. Simulation results demonstrate that increasing substantially enhances regulation walls. At volume fraction 15%, peak temperature reduced by 4.33 °C compared conventional wall, while attenuation factor increases 16.88. Furthermore, mean delay extends 440 min, amplitude decreases 1.13 °C, instantaneous flux 13.24 W/m2. These findings highlight significant latent superior modulation walls, offering valuable technical reference for design energy-efficient building envelope systems.

Language: Английский

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Review of Dynamic Building Envelope Systems and Technologies Utilizing Renewable Energy Resources

Designs, Journal Year: 2025, Volume and Issue: 9(2), P. 41 - 41

Published: March 31, 2025

Dynamic building envelopes integrated with renewable energy sources, termed and Renewable Source Building Envelopes (DREBE), provide an innovative approach to optimizing envelope designs. Yet, these systems are not mature enough widely adopted in the industry few literature resources employed understand them. These dynamically respond adapt various environmental, energy, occupancy demands for higher efficiency comfort levels compared traditional while simultaneously producing energy. Their potential climate change mitigation fostering sustainable urban development warrants great attention from planners. Especially positive districts, which aim reach net-positive goals through utilizing smart efficient on district level. This paper reviews like dynamic photovoltaic shading devices phase materials evaluates their performance by answering two research questions, what current DBE trends they feasible achieving consumption? The analysis conducted reveals dominance of solar-based a need alternatives. study suggests that alternatives wind as source should be studied systems. Moreover, highlights gaps including insufficient data long-term application economic costs associated such To address this gap, exploring depth some then branching into combinations multiple or adaptive components further enhance overall performance. By synthesizing body literature, gives insights advancing crucial role future environments.

Language: Английский

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Enhancing Energy Efficiency in Buildings Using Phase-Change Materials, Acrylic Paint, and Solar Shading in Hot Climates

International Journal of Thermofluids, Journal Year: 2025, Volume and Issue: unknown, P. 101189 - 101189

Published: March 1, 2025

Language: Английский

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An experimental study on application of phase change materials in a portable cabin in Wintertime of Kuwait under Active/Passive cooling

Applied Thermal Engineering, Journal Year: 2024, Volume and Issue: unknown, P. 124429 - 124429

Published: Sept. 1, 2024

Language: Английский

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