Investigation of double-PCM based PV composite wall for power-generation and building insulation: thermal characteristics and energy consumption prediction

Energy and Built Environment, Journal Year: 2024, Volume and Issue: unknown

Published: Aug. 1, 2024

The integration of phase change material (PCM) with building-integrated photovoltaic (BIPV) presents a compelling approach to enhance solar energy utilization and mitigate indoor thermal loads, contributing energy-efficient low-carbon building development. Traditional BIPV-PCM structures, however, struggle balance PV efficiency insulation, particularly varying PCM wall positions. To address this situation, study introduces novel double-PCM BIPV composite envelope (BIPV-dPCM). An experimentally validated dynamic heat transfer model was developed used perform comparative simulation analysis three reference systems quantify the energy-saving potential BIPV-dPCM, focusing on output insulation effectiveness metrics. Further dimensionless parametric were carried out investigate systematic performance two PCMs at different relativities. In addition, coupled working mechanism BIPV-dPCM system concerning power generation under transient variations is explored. It found that showcases superior thermoelectric coupling compared alternative enclosures. Incorporating significantly enhances electrical exergy by 11.66 % 1.54 %, surpassing other systems. increase in latent ratio has limited effect gain. Notably, as thickness exceeds 1, decline P value decelerates, for every 0.5 increment g, diminishes merely 0.2 %. ideal h identified between 1 1.5, 1.5 being optimal conservation objectives. Additionally, self-sufficiency coefficient (SSC) remains robust, sustaining range 55 65 over prolonged periods. This offers perspectives serves design optimizing enhancing cooling efficiencies subtropical climates.

Language: Английский

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Determining the most efficient phase change materials configuration for enhancing the thermal and energy performance of concrete building envelopes in a tropical region

Energy and Buildings, Journal Year: 2025, Volume and Issue: 331, P. 115380 - 115380

Published: Jan. 31, 2025

Language: Английский

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Design of a Passive Temperature Management House Using Composite Phase Change Materials

Energy, Journal Year: 2025, Volume and Issue: unknown, P. 134962 - 134962

Published: Feb. 1, 2025

Language: Английский

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An integrated adaptive façade system using a glass block filled with phase change material: cooling energy load and performance enhancement

Building and Environment, Journal Year: 2025, Volume and Issue: unknown, P. 112724 - 112724

Published: Feb. 1, 2025

Language: Английский

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Phase change materials integrated into building envelopes for thermal management: A review

Journal of Building Engineering, Journal Year: 2025, Volume and Issue: unknown, P. 112063 - 112063

Published: Feb. 1, 2025

Language: Английский

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Chitin in Rubber-Based Blends and Composites

Advanced structured materials, Journal Year: 2025, Volume and Issue: unknown, P. 237 - 272

Published: Jan. 1, 2025

Language: Английский

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Enhanced Heat Transfer and Melting of PCM in Cavities with Bimetallic Flexible Fins: Numerical Investigation

Research Square (Research Square), Journal Year: 2025, Volume and Issue: unknown

Published: March 4, 2025

This study investigates numerically the effects of a bimetallic flexible fin on heat transfer and melting process liquid phase change material (PCM) within cavity. The is attached to left heated wall governing equations system model in fluid structure domains are written Arbitrary Lagrangian–Eulerian (ALE) formulation then solved by Multiphysics commercial software (COMSOL 6.1). results demonstrate that significantly enhances compared fixed fin, leading faster PCM for different values Rayleigh number. Moreover, configuration leads more uniform temperature distribution time (up 11% reduction) fin.

Language: Английский

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Energy-Saving Design Strategies for Industrial Heritage in Northeast China Under the Concept of Ultra-Low Energy Consumption

Energies, Journal Year: 2025, Volume and Issue: 18(5), P. 1289 - 1289

Published: March 6, 2025

Countries around the world have developed standards for ultra-low energy consumption building design and future plans. Unfortunately, these lack specific requirements industrial heritage. As an important carrier of urban context, history, transmission residents’ memories, heritage cannot be overlooked in development. This study uses DesignBuilder simulation software to model (taking Changchun Tractor Factory as example) compares before after renovation strategies. The results show that Case 4 plan, implementing strategy, heating can reduced by about 11,648 (kWh/m2) over season, total primary was million (kgce/tce), decreases approximately 95%. demonstrates effectiveness reuse strategy proposed this paper. It provides a new direction under related case studies.

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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Advancing Thermal Energy Storage: Synthesis and Thermal Performance of Silica-Encapsulated Paraffin PCMs

Molecules, Journal Year: 2025, Volume and Issue: 30(8), P. 1698 - 1698

Published: April 10, 2025

This study successfully synthesizes SiO2-encapsulated nano-phase change materials (NPCMs) via a sol–gel method, using paraffin as the thermal storage medium. The encapsulation process is validated through FTIR, XRD, and XPS analyses, confirming formation of an amorphous SiO2 shell without any chemical interaction between core shell. SEM imaging reveals well-defined core–shell structure with uniform spherical geometry, smallest particle size (190 nm) observed in sample 4:1 paraffin/SiO2 ratio (PARSI-4). TGA results demonstrate enhanced stability, thicker shells effectively protecting against degradation. DSC analysis indicates that increased improves performance, PARSI-4 exhibiting highest melting (160.86 J/g) solidifying (153.93 enthalpies. (ER) efficiency (EE) have been accomplished at 87.83% 87.04%, respectively, sample. Thermal cycling tests confirm material’s long-term 98.16% enthalpy retention even after 100 cycles. Additionally, leakage resistance validate structural integrity encapsulated paraffin, preventing spillage elevated temperatures. These findings potential NPCMs for efficient energy (TES), making them promising candidates sustainable energy-efficient applications.

Language: Английский

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