Design and Evaluation of Compact Nano-Enhanced Latent Heat Thermal Energy Storage for domestic heating radiators

“EPSRC：Elisangela Jesse D‘Oliveira：EP/S023836/1”-研究委员会表示，该学生由工程和物理科学研究委员会(EPSRC)资助。-学生姓名：Elisangela Jesse D‘Oliveira-培训助学金编号：EPSRC东北大学可再生能源博士培训中心(EP/S023836/1)，EP/S023836/1热能几乎占英国能源使用量的一半，约80%的家庭热能由天然气提供。因此，我们必须通过提高空间供暖系统和热水供暖系统的效率和脱碳来减少供暖需求。采用低碳家庭供暖技术是英国能源系统脱碳的最大挑战之一，因为80%的家庭已经建成。家庭改造是减少碳排放的最具成本效益的途径之一。LHTES的使用有可能通过储存多余的能量来减少空间供暖能源的使用，并弥合可再生能源的供需不匹配特性或电力高峰负荷之间的差距。使用紧凑型LHTES可以提高家用或住宅散热器的效率，并可以作为一种节能改造措施来实施。有一些关于LHTES在家庭供暖中的研究。坎波斯-塞拉多等人。(2014)设计了一种使用水-石蜡的家用翅片式LHTES系统，与传统的热水储水箱相比，体积减少了50%以上。Dechene等人。(2014)研究了建筑通风系统中空气-脂肪酸热交换器的耦合；该模块既可用于空间供暖，也可用于制冷。Bondareva等人。(2018)对一种带有石蜡的翅片式铜散热器进行了数值模拟，结果表明，翅片和纳米粒子的添加提高了熔化速度。Sardari等人。(2020)通过引入一种新型的储能加热器，研究了泡沫金属和石蜡在家庭采暖中的应用，结果表明，固化时间缩短了45%，热回收提高了73%。在相变材料中加入高导电性的纳米材料，可以提高相变材料的传热率，从而调节充放电速率，从而提高相变材料的导热性能。然而，评估纳米增强相变材料(NEPCM)应用于家用散热器以通过热回收提高效率和节能的可行性的研究尚未进行。因此，计划进行一次专门的调查，重点是加深对这种技术的了解和理解。缺乏适当的设计指南、成本和速率问题推迟了LHTES设备的部署。因此，本研究将构建并实验评估所提出的LHTES系统的性能，为制定设计指南做出贡献。参考文献Bondareva，N.S.，Gibanov，N.S.和Sheremet，M.A.(2018年11月)。翅片散热器内纳米增强相变材料的熔融。摘自《物理学杂志：会议系列》(第1卷，第1期，012023页)。首页--期刊主要分类--期刊细介绍--期刊题录与文摘--期刊详细文摘内容家用翅片式潜热蓄能系统的设计。《能源论文集》，48,300-308。迪切恩，B.，Gendebien，S.，Marten，J.，&Lemort，V.(2014)。设计和测试一种用于建筑通风应用的空气-相变材料热交换器。Sardari，P.T.，Babaei-Mahani，R.，Gidding，D.，Yasseri，S.，Moghimi，M.A.，&Bahai，H.(2020)。使用紧凑型复合金属泡沫/相变材料潜热储存装置从家用散热器回收能量。《清洁生产杂志》，第257,120504页。

"EPSRC : Elisangela Jesus D'Oliveira : EP/S023836/1"- Research council that the student is funded by the Engineering and Physical Sciences Research Council (EPSRC). - The student's name: Elisangela Jesus D'Oliveira- Training Grant Reference Number: EPSRC Centre for Doctoral Training in Renewable Energy Northeast Universities (ReNU), EP/S023836/1Heat represents almost half of the use of energy in the UK, and around 80% of domestic heat is supplied by natural gas. Therefore, we must reduce the heating demand by increasing the efficiency and decarbonisation of the space and hot water heating systems. The adoption of low-carbon domestic heating technologies is one of the biggest challenges in the decarbonisation of the UK's energy system because 80% of the homes are already built. The retrofitting of households is one of the most cost-effective routes to reduce carbon emissions.The use of LHTES has the potential to reduce the space heating energy use by storing excess energy and bridge the gap between supply/demand mismatch characteristic of renewable energy sources or electricity peak-load. The efficiency of domestic or residential radiator could be increased using a compact LHTES, and it could be implemented as a retrofit measurement to reduce energy consumption. There are some studies of LHTES in domestic heating. Campos-Celador et al. (2014) designed a finned plate LHTES system for domestic applications using water-paraffin, allowing a volume reduction of more than 50%, comparing to a conventional hot water storage tank. Dechesne et al. (2014) studied the coupling of an air-fatty acids heat exchanger in a building ventilation system; the module could be used either for space heating or cooling. Bondareva et al. (2018) studied a finned copper radiator numerically with paraffin enhancing with Al2O3 nanoparticles, and their results demonstrated that the addition of fins and nanoparticles increases the melting rate. Sardari et al. (2020) investigated the application of combined metal foam and paraffin for domestic space heating by introducing a novel energy storage heater; their results showed that the solidification time was reduced by 45% and the heat recovery was enhanced by 73%. Many studies have been conducted to investigate the enhancement of the thermal conductivity of the PCMs with the incorporation of high conductive nanomaterials, as they increase the heat transfer rate of the PCM to tailor the application charging and discharging rates. However, a study evaluating the feasibility of the nano-enhanced PCMs (NEPCMs) applications on domestic radiators to improve the efficiency and energy-savings through heat recovery has not been conducted. Therefore, a dedicated investigation was planned with the focus on deepening the knowledge and understanding of such a technology. The lack of proper design guidelines, cost and the rate problem have delayed the deployment of LHTES devices. Therefore, this study will build and experimentally evaluate the performance of the LHTES system proposed contributing to the development of the design guidelines. ReferencesBondareva, N. S., Gibanov, N. S., & Sheremet, M. A. (2018, November). Melting of nano-enhanced PCM inside finned radiator. In Journal of Physics: Conference Series (Vol. 1105, No. 1, p. 012023). IOP Publishing.Campos-Celador, A., Diarce, G., Zubiaga, J. T. V., Garcia-Romero, A.M., Lopez, L. & Sala, J. M. 2014. Design of a finned plate latent heat thermal energy storage system for domestic for domestic applications. Energy Procedia, 48, 300-308.Dechesne, B., Gendebien, S., Martens, J., & Lemort, V. (2014). Designing and testing an air-PCM heat exchanger for building ventilation application coupled to energy storage.Sardari, P. T., Babaei-Mahani, R., Giddings, D., Yasseri, S., Moghimi, M. A., & Bahai, H. (2020). Energy recovery from domestic radiators using a compact composite metal Foam/PCM latent heat storage. Journal of Cleaner Production, 257, 120504.