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首页> 外文期刊>Energy and Buildings >An experimental and numerical analysis of an improved thermal storage tank with encapsulated PCM for use in retrofitted buildings for heating
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An experimental and numerical analysis of an improved thermal storage tank with encapsulated PCM for use in retrofitted buildings for heating

机译：改进的PCM改进的热储罐用于加热建筑物的封装PCM的实验和数值分析

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In the building sector, 40% of final energy is used for heating and cooling. Up to 75% of this is used in res-idential buildings. It is necessary to take a step forward and reduce this share of energy consumption, in particular through the use of efficient technologies and their integration into the system of renovation of residential buildings, which is a major challenge for future research in this field. An important technology for achieving this goal is heat storage, where the use of phase change materials as heat storage material allows for a higher energy density. The main advantage of using heat storage technologies is the solution of the problem of the temporal divergence of energy demand and the possibility to use a higher share of energy from renewable sources, e.g. such as solar energy. Solar energy as a resource can be used during the day, when production is higher than demand, which allows storing energy for a later period of demand. This also improves the efficiency of the heat generators in the system in which the thermal stor-age is integrated. The focus of the present study is on the investigation of phase change materials (PCM) as thermal storage in the conventional water tank storage. A comparison was made between a conven-tional sensible thermal energy storage tank and a hybrid latent heat storage tank, where the PCM was encapsulated in cylindrical nodules and integrated into the water tank to improve the energy density of the conventional water heat storage tank. The results of the experiment showed that 15% of the PCM inside the water storage tank increases heat storage for 70% over conventional heat storage tank with water only inside. The measured experimental data were compared with the simulation results from TRNSYS model to enable further analysis and improvement of the heat storage tank with PCM integration. (c) 2021 The Author(s). Published by Elsevier B.V. This is an open access article under the CC BY license (http://creativecommons.org/licenses/by/4.0/).
机译：在建筑物领域，40％的最终能源用于加热和冷却。 res-ideratial建筑中使用高达75％的其中。有必要通过使用高效技术及其融入住宅建筑物的翻新系统，迈出一步，减少这一能源消耗份额，特别是在居住建筑物的翻新系统中，这是该领域未来研究的主要挑战。实现该目标的重要技术是蓄热，其中使用相变材料作为蓄热材料允许更高的能量密度。使用蓄热技术的主要优点是能源需求的时间差异问题的解决方案，以及使用从可再生来源的更高份额的能量份额的可能性。如太阳能。当生产高于需求时，当天可以使用作为资源的太阳能，这允许在稍后的需求期间储存能量。这也提高了积分热存储器时的系统中的发热器的效率。本研究的重点是在传统水箱储存中调查相变材料（PCM）作为热储存。在连续明智的热能储罐和混合潜热储罐之间进行了比较，其中PCM封装在圆柱形结节中并集成到水箱中以改善传统水蓄热罐的能量密度。实验结果表明，储水罐内15％的PCM在常规蓄热罐中增加了70％的储热量，只有内部的水。将测量的实验数据与Trnsys模型的模拟结果进行了比较，以便进一步分析和改进具有PCM集成的蓄热罐。 （c）2021提交人。由elsevier b.v发布。这是CC下的开放式访问文章（http://creativecommons.org/licenses/by/4.0/）。

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