相变储能材料RT28在建筑墙体中的应用研究
发布时间：2018-08-12 13:23
【摘要】：我国能源的开发和利用一直是科研人员重点关注的问题之一,也是关系我国社会主义可持续发展以及人们生活质量提高的关键因素。随着旧能源的大规模使用和新能源的不断开发,这同时也会造成能源的大量浪费不合理的使用,所以能源的节约这项技术的研究已是刻不容缓。相变储能技术作为新型的节能技术之一,它有着自身独特处理热能和如何有效的使用存储的能力。相变储能材料对能量的存储方式主要是指随着环境温度的变化,材料的状态会发生相变,同时从环境中吸收或释放出热量的过程。本文主要针对德固萨材料相变石蜡RT28在建筑墙体中的节能效果进行研究。本次研究就是为了制备出适合建筑墙体节能使用的相变材料,然后通过实验测试和软件模拟的方式检验其储能效果。本文在绪论部分对相变储能材料的发展现状进行了综述说明,对材料的分类和特点分别进行分析。然后选取了相变石蜡RT28作为本文研究的相变储能材料,采用微胶囊技术对材料进行封装。采用差式量热扫描仪(DSC)对相变石蜡RT28进行了热物性能的测试,包括材料的相变温度、比热容、耐久性、相变焓等。发现所制备的胶囊状RT28符合相变材料的条件,而且采用微胶囊技术对材料的蓄热能力有所提高。为了检测相变石蜡RT28的实际节能效果,本次研究结合阜阳某公司对相变储能墙体进行了应用测试。实验台的搭建采用相似性的原理,将相变石蜡RT28加入蒸压加气混凝土的墙体,与普通的墙体进行比较。实验结果显示,与没有加入相变材料的普通墙体对比,添加了相变石蜡RT28的墙体最高温度降低大约2℃,同时节能大约9%,而且能够有效的降低房间温度的变化幅度,还可以加强蒸压加气混凝土的性能。最后用有限元分析软件ANSYS对墙体进行传热模拟,分别对加入了相变石蜡RT28的墙体和普通墙体的表面温度随环境温度变化的情况进行模拟。模拟分析的数据与实验测试的数据最大误差不超过2%,符合要求。本文对相变储能墙体分别建立数学和物理模型,为相变材料的进一步应用研究提供有价值的资料。
[Abstract]:The development and utilization of energy in China has always been one of the key issues paid close attention to by scientific researchers. It is also a key factor related to the sustainable development of socialism and the improvement of people's quality of life. With the large-scale use of old energy and the continuous development of new energy, it will also lead to a large number of energy waste unreasonable use, so energy conservation this technology is urgent. As one of the new energy saving technologies, phase change energy storage technology has its own unique ability to deal with heat energy and how to use storage effectively. The energy storage mode of phase change energy storage material mainly refers to the process that the state of the material changes with the change of ambient temperature, and the heat is absorbed or released from the environment at the same time. In this paper, the energy-saving effect of phase-change paraffin RT28 in building wall is studied. The purpose of this study is to prepare phase change material suitable for building wall energy saving, and then test its energy storage effect by means of experimental test and software simulation. In the introduction part, the development of phase change energy storage materials is reviewed, and the classification and characteristics of the materials are analyzed. Then the phase change paraffin RT28 was selected as the phase change energy storage material studied in this paper, and the microencapsulation technology was used to encapsulate the material. The thermal properties of phase change paraffin wax (RT28) were measured by differential calorimeter (DSC), including phase transition temperature, specific heat capacity, durability and enthalpy of phase transition. It was found that the encapsulated RT28 conformed to the condition of phase change material, and the heat storage ability of the material was improved by using microencapsulation technology. In order to test the energy saving effect of phase change paraffin wax (RT28), the application test of phase change storage wall was carried out by a company in Fuyang. The principle of similarity is adopted in the construction of the test bench, and the phase change paraffin RT28 is added to the autoclaved aerated concrete wall, and compared with the ordinary wall. The experimental results show that compared with the ordinary wall without phase change material, the maximum temperature of the wall with phase change paraffin RT28 is reduced by about 2 鈩，
本文编号：2179184
[Abstract]:The development and utilization of energy in China has always been one of the key issues paid close attention to by scientific researchers. It is also a key factor related to the sustainable development of socialism and the improvement of people's quality of life. With the large-scale use of old energy and the continuous development of new energy, it will also lead to a large number of energy waste unreasonable use, so energy conservation this technology is urgent. As one of the new energy saving technologies, phase change energy storage technology has its own unique ability to deal with heat energy and how to use storage effectively. The energy storage mode of phase change energy storage material mainly refers to the process that the state of the material changes with the change of ambient temperature, and the heat is absorbed or released from the environment at the same time. In this paper, the energy-saving effect of phase-change paraffin RT28 in building wall is studied. The purpose of this study is to prepare phase change material suitable for building wall energy saving, and then test its energy storage effect by means of experimental test and software simulation. In the introduction part, the development of phase change energy storage materials is reviewed, and the classification and characteristics of the materials are analyzed. Then the phase change paraffin RT28 was selected as the phase change energy storage material studied in this paper, and the microencapsulation technology was used to encapsulate the material. The thermal properties of phase change paraffin wax (RT28) were measured by differential calorimeter (DSC), including phase transition temperature, specific heat capacity, durability and enthalpy of phase transition. It was found that the encapsulated RT28 conformed to the condition of phase change material, and the heat storage ability of the material was improved by using microencapsulation technology. In order to test the energy saving effect of phase change paraffin wax (RT28), the application test of phase change storage wall was carried out by a company in Fuyang. The principle of similarity is adopted in the construction of the test bench, and the phase change paraffin RT28 is added to the autoclaved aerated concrete wall, and compared with the ordinary wall. The experimental results show that compared with the ordinary wall without phase change material, the maximum temperature of the wall with phase change paraffin RT28 is reduced by about 2 鈩，
本文编号：2179184
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