Technical, economic and environmental evaluation of a distributed photovoltaic-battery system for residential buildings with phase change materials

IF 9 1区工程技术 Q1 ENERGY & FUELS

Renewable Energy Pub Date : 2025-05-21 DOI:10.1016/j.renene.2025.123541

Yaping Zhou , Daifeng Li , Jing Luo , Xiaoqin Sun , Xionghui Li

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Abstract

Integrating energy storage systems is crucial for achieving temporal and dimensional energy balance, and maintaining the stability of grid-connected distributed photovoltaic (PV) systems for buildings. This study proposed a coupling system composed of distributed PV, battery, and phase change materials (PCM) for residential buildings. PCM was incorporated into building walls to reduce heating, cooling and associated carbon emissions. A dynamic battery operation strategy was developed to enhance system independence. The technical, economic and environmental performance of the system was evaluated by comparing the scenarios with and without PCM incorporation and battery optimization strategy. A dynamic carbon emission factor was also proposed to examine the impacts of PV generation. Results showed that incorporating PCM led to an average power demand reduction of 5.2 %. The optimized battery operation strategy led to a 23.2 % increase in both PV self-sufficiency and self-consumption, along with a reduction of 18.4 % and 31.4 % in the energy sent to and consumed from the grid, respectively. The optimized strategy resulted in an increase in the payback period by 1.72 years, while annual carbon emissions were reduced by 162.4 kgCO₂. The annual average carbon emission factor decreased by 36.3 % compared to the grid emission factor.

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相变材料住宅分布式光伏电池系统的技术、经济和环境评价

集成储能系统对于实现建筑分布式光伏并网系统的时间和空间能量平衡，保持系统的稳定性至关重要。本研究提出了一种由分布式光伏、电池和相变材料（PCM）组成的住宅耦合系统。PCM被整合到建筑墙壁中，以减少加热、冷却和相关的碳排放。为了提高系统的独立性，提出了一种动态电池运行策略。通过比较加入和不加入PCM的情况以及电池优化策略，对系统的技术、经济和环境性能进行了评估。本文还提出了一个动态碳排放因子来评估光伏发电的影响。结果表明，结合PCM导致平均电力需求减少5.2%。优化后的电池运行策略使光伏自给率和自用电量分别提高了23.2%，并网电量和从网电量分别减少了18.4%和31.4%。优化后的投资回收期延长了1.72年，年碳排放量减少了162.4 kgCO2。年均碳排放系数较电网排放系数降低36.3%。

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来源期刊

Renewable Energy 工程技术-能源与燃料

CiteScore

18.40

自引率

9.20%

发文量

1955

审稿时长

6.6 months

期刊介绍： Renewable Energy journal is dedicated to advancing knowledge and disseminating insights on various topics and technologies within renewable energy systems and components. Our mission is to support researchers, engineers, economists, manufacturers, NGOs, associations, and societies in staying updated on new developments in their respective fields and applying alternative energy solutions to current practices. As an international, multidisciplinary journal in renewable energy engineering and research, we strive to be a premier peer-reviewed platform and a trusted source of original research and reviews in the field of renewable energy. Join us in our endeavor to drive innovation and progress in sustainable energy solutions.