• 主题
高级搜索  >
历史搜索 清空历史
首页> 外文学位 >A Finite Element-Based Framework for Understanding the Energy Performance of Concrete Elements Incorporating Phase Change Materials.
【24h】

A Finite Element-Based Framework for Understanding the Energy Performance of Concrete Elements Incorporating Phase Change Materials.

机译：基于有限元的框架，用于了解结合相变材料的混凝土元件的能量性能。

获取原文
获取原文并翻译 | 示例
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

Dwindling energy resources and associated environmental costs have resulted in a serious need to design and construct energy efficient buildings. One of the strategies to develop energy efficient structural materials is through the incorporation of phase change materials (PCM) in the host matrix. This research work presents details of a finite element-based framework that is used to study the thermal performance of structural precast concrete wall elements with and without a layer of phase change material. The simulation platform developed can be implemented for a wide variety of input parameters. In this study, two different locations in the continental United States, representing different ambient temperature conditions (corresponding to hot, cold and typical days of the year) are studied. Two different types of concrete---normal weight and lightweight, different PCM types, gypsum wallboard's with varying PCM percentages and different PCM layer thicknesses are also considered with an aim of understanding the energy flow across the wall member. Effect of changing PCM location and prolonged thermal loading are also studied. The temperature of the inside face of the wall and energy flow through the inside face of the wall, which determines the indoor HVAC energy consumption are used as the defining parameters. An ad-hoc optimization scheme is also implemented where the PCM thickness is fixed but its location and properties are varied. Numerical results show that energy savings are possible with small changes in baseline values, facilitating appropriate material design for desired characteristics.
机译：能源资源的减少和相关的环境成本导致对设计和建造节能建筑的迫切需求。开发节能结构材料的策略之一是通过在主体基质中掺入相变材料（PCM）。这项研究工作提出了基于有限元的框架的详细信息，该框架用于研究带有或不带有相变材料层的预制混凝土墙体构件的热性能。开发的仿真平台可用于多种输入参数。在这项研究中，研究了美国大陆上代表不同环境温度条件（对应于一年中的炎热，寒冷和典型日子）的两个不同位置。还考虑了两种不同类型的混凝土-普通重量和轻质，不同的PCM类型，具有不同PCM百分比和不同PCM层厚度的石膏墙板，目的是了解穿过墙体的能量流。还研究了改变PCM位置和延长热负荷的影响。壁的内表面的温度和流过壁的内表面的能量（确定室内HVAC能耗）用作定义参数。在PCM厚度固定但位置和属性不同的情况下，还可以实施临时优化方案。数值结果表明，通过在基线值上进行很小的更改就可以节省能源，从而有助于针对所需特性进行适当的材料设计。

著录项

  • 作者

    Hembade, Lavannya Babanrao.;

  • 作者单位

    Arizona State University.;

  • 授予单位 Arizona State University.;
  • 学科 Engineering Civil.
  • 学位 M.S.
  • 年度 2012
  • 页码 118 p.
  • 总页数 118
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号