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A comprehensive performance evaluation of phase change materials for cold energy storage systems
Energy and Buildings ( IF 6.6 ) Pub Date : 2025-01-20 , DOI: 10.1016/j.enbuild.2025.115349
Merve Altuntas, Dogan Erdemir, Sebahattin Unalan
Energy and Buildings ( IF 6.6 ) Pub Date : 2025-01-20 , DOI: 10.1016/j.enbuild.2025.115349
Merve Altuntas, Dogan Erdemir, Sebahattin Unalan
The increasing need for cooling, particularly air conditioning, is driving a significant rise in building energy consumption. This surge in demand often leads to peak loads, straining power grids and increasing costs. Cold thermal energy storage systems, especially those utilizing phase change materials, offer a promising solution to mitigate these challenges. This study presents a comprehensive investigation and performance assessment of various phase change materials for efficient cold energy storage applications. Phase change materials are considered encapsulated, one of the most common techniques in cold thermal energy storage applications. The primary objective is to develop a comprehensive methodology for the system’s design and then identify the most suitable phase change material for better system performance. The research also studies the impact of storage tank porosity, diameter-to-height ratio, and pressure drop on system performance for a 1 MWh cooling capacity. The performance assessment considers all essential power drivers of the practical systems. The findings reveal that water/ice is the most efficient phase change material, requiring the smallest mass and exhibiting the highest overall system COP values by lowering the heat transfer fluid pump and chiller powers. Specifically, it has been determined that water/ice is the most efficient phase change material, requiring the smallest mass quantity of 10.4 tons and demonstrating overall coefficient of performance values ranging from approximately 3.98 to 4.37 for different heat transfer fluid options. This research contributes to the development of sustainable and cost-effective cooling solutions, addressing the growing energy demands of the building sector and promoting a more resilient and efficient energy infrastructure.
中文翻译:
冷储能系统相变材料的综合性能评价
对冷却,尤其是空调的需求不断增长,推动了建筑能耗的显着增加。这种需求激增通常会导致峰值负载、电网紧张和成本增加。冷热储能系统,尤其是那些利用相变材料的系统,为缓解这些挑战提供了一种有前途的解决方案。本研究对用于高效冷能存储应用的各种相变材料进行了全面的调查和性能评估。相变材料被认为是封装的,这是冷热能存储应用中最常见的技术之一。主要目标是为系统设计开发一种全面的方法,然后确定最合适的相变材料以获得更好的系统性能。该研究还研究了储罐孔隙率、径高比和压降对 1 MWh 冷却能力的系统性能的影响。性能评估考虑了实际系统的所有基本动力驱动因素。研究结果表明,水/冰是最有效的相变材料,通过降低传热流体泵和冷却器功率,需要最小的质量并表现出最高的整体系统 COP 值。具体来说,已经确定水/冰是最有效的相变材料,需要的最小质量量为 10.4 吨,并且对于不同的传热流体选项,总体性能系数值约为 3.98 至 4.37。 这项研究有助于开发可持续且具有成本效益的冷却解决方案,满足建筑行业日益增长的能源需求,并促进更具弹性和效率的能源基础设施。
更新日期:2025-01-20
中文翻译:
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冷储能系统相变材料的综合性能评价
对冷却,尤其是空调的需求不断增长,推动了建筑能耗的显着增加。这种需求激增通常会导致峰值负载、电网紧张和成本增加。冷热储能系统,尤其是那些利用相变材料的系统,为缓解这些挑战提供了一种有前途的解决方案。本研究对用于高效冷能存储应用的各种相变材料进行了全面的调查和性能评估。相变材料被认为是封装的,这是冷热能存储应用中最常见的技术之一。主要目标是为系统设计开发一种全面的方法,然后确定最合适的相变材料以获得更好的系统性能。该研究还研究了储罐孔隙率、径高比和压降对 1 MWh 冷却能力的系统性能的影响。性能评估考虑了实际系统的所有基本动力驱动因素。研究结果表明,水/冰是最有效的相变材料,通过降低传热流体泵和冷却器功率,需要最小的质量并表现出最高的整体系统 COP 值。具体来说,已经确定水/冰是最有效的相变材料,需要的最小质量量为 10.4 吨,并且对于不同的传热流体选项,总体性能系数值约为 3.98 至 4.37。 这项研究有助于开发可持续且具有成本效益的冷却解决方案,满足建筑行业日益增长的能源需求,并促进更具弹性和效率的能源基础设施。