Simulation-based performance analysis of an air conditioning system integrated with a sensible thermal energy storage tank for peak load shaving

IF 10.9 1区工程技术 Q1 ENERGY & FUELS

Energy Conversion and Management Pub Date : 2025-09-30 DOI:10.1016/j.enconman.2025.120551

Zakir Hussain , Seongmin Choi , Honghyun Cho

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引用次数: 0

Abstract

Rising residential cooling demand during peak hours places significant stress on both air conditioning systems and power grids, resulting in increased operational costs and reduced system efficiency. This study investigates the integration of a water-based thermal energy storage tank (TEST) with a residential air conditioner (AC) as a strategy for load shifting and performance enhancement under dynamic electricity pricing. The combined simulation and computational fluid dynamics (CFD) analysis revealed that while the coefficient of performance (COP) decreases by up to 9.85% during off-peak charging due to additional compressor load, substantial benefits are achieved during peak hours. The results show COP improvements of 18.7%–41.9% and compressor workload reductions of up to 29.6% were observed during peak cooling periods. The integration of the TEST system resulted in a total daily electricity cost savings of 179.4 Korean won (0.16 USD), representing an 11.6% reduction compared to conventional operation. Additionally, total daily CO₂ emissions were reduced by approximately 10% through effective load shifting from carbon-intensive peak hours to cleaner off-peak periods. These findings demonstrate that water-based TEST can significantly improve the operational efficiency, cost-effectiveness, and environmental sustainability of residential cooling systems. This study presents a practical framework for enhancing the sustainability and economic viability of residential cooling systems in urban environments, where energy demands are increasing and electricity pricing is dynamic.

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基于仿真的显热储热调峰空调系统性能分析

高峰时段住宅用电量的增加对空调系统和电网造成了巨大压力，导致运行成本增加和系统效率降低。本研究探讨了在动态电价下，将水基储热罐（TEST）与住宅空调（AC）集成作为负荷转移和性能增强的策略。结合仿真和计算流体动力学（CFD）分析表明，在非高峰充电期间，由于额外的压缩机负荷，性能系数（COP）降低了高达9.85%，而在高峰时段则获得了可观的效益。结果表明，在峰值冷却期间，COP提高了18.7%-41.9%，压缩机工作量减少了29.6%。测试系统的集成使每天的总电费节省了179.4韩元（0.16美元），与传统操作相比减少了11.6%。此外，通过从碳密集的高峰时段到清洁的非高峰时段的有效负荷转移，每天的二氧化碳总排放量减少了约10%。这些发现表明，水基测试可以显著提高住宅冷却系统的运行效率、成本效益和环境可持续性。这项研究提出了一个实用的框架，以提高城市环境中住宅冷却系统的可持续性和经济可行性，其中能源需求不断增加，电价是动态的。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Energy Conversion and Management 工程技术-力学

CiteScore

19.00

自引率

11.50%

发文量

1304

审稿时长

17 days

期刊介绍： The journal Energy Conversion and Management provides a forum for publishing original contributions and comprehensive technical review articles of interdisciplinary and original research on all important energy topics. The topics considered include energy generation, utilization, conversion, storage, transmission, conservation, management and sustainability. These topics typically involve various types of energy such as mechanical, thermal, nuclear, chemical, electromagnetic, magnetic and electric. These energy types cover all known energy resources, including renewable resources (e.g., solar, bio, hydro, wind, geothermal and ocean energy), fossil fuels and nuclear resources.