...
  • 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>ASHRAE Transactions >Design Criteria and Thermal Performance of a Building-Integrated Ventilated Concrete Slab
【24h】

Design Criteria and Thermal Performance of a Building-Integrated Ventilated Concrete Slab

机译：建筑一体化通风混凝土板的设计准则和热性能

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

Effectiveness of a ventilated concrete slab (VCS) as a thermal storage integrated with an air-source heat pump (ASHP) and building-integrated photovoltaic/thermal (BIPV/T) collector was studied. Design criteria of air channels inside the slab are discussed considering the mass flow rate of air and size of channels. A TRNSYS model of BIPV/T systems was used to estimate potential thermal generation of the BIPV/Tpanels in the winter. Generated thermal energy was stored in the VCS and then released back to the ASHP during night-time operation. It is shown that using VCS thermal storage to preheat the outdoor air as an inlet flow to the air-source heat pump increases the coefficient of performance (COP) of the system. Consequently, electricity consumption by the ASHP decreases during night. This thermal storage improves performance of both PV/T and ASHP without using water or other thermal storage systems/materials. Additionally, a three-dimensional model of the VCS was created in ANSYS Fluent to simulate the heat transfer between air, concrete, and room. The simulated results are based on different inlet air temperatures for a variety of inlet air velocities from 0.1 to 5.3 m/s (17.4 fps). It is shown that lower air velocity inside channel corresponds to more efficient heat transfer between air and concrete. However, the low inlet velocity cannot transfer the total required thermal energy. Therefore, an optimal combination of air velocity, outside air temperature, heat transfer rate, and total heat transfer must be found for each VCS design.
机译：研究了通风混凝土板（VCS）作为与空气源热泵（ASHP）和建筑物集成光伏/热能（BIPV / T）集热器集成的蓄热器的有效性。考虑空气质量流量和通道尺寸，讨论了平板内部空气通道的设计标准。 BIPV / T系统的TRNSYS模型用于估算冬季BIPV / Tpanels的潜在热量生成。产生的热能存储在VCS中，然后在夜间运行期间释放回ASHP。结果表明，使用VCS蓄热器预热室外空气作为空气源热泵的进气流会增加系统的性能系数（COP）。因此，ASHP的耗电量在夜间减少。该储热装置可提高PV / T和ASHP的性能，而无需使用水或其他储热系统/材料。此外，在ANSYS Fluent中创建了VCS的三维模型，以模拟空气，混凝土和房间之间的热传递。模拟结果基于从0.1到5.3 m / s（17.4 fps）的各种进气速度的不同进气温度。结果表明，通道内较低的空气速度对应于空气和混凝土之间更有效的热传递。然而，低的入口速度不能传递总的所需热能。因此，必须为每种VCS设计找到最佳的风速，外部空气温度，热传递率和总热传递的组合。

著录项

  • 来源
    《ASHRAE Transactions》 |2015年第2期|99-110|共12页
  • 作者

    Navid Ekrami; Raghad S. Kamel; Alan S. Fung;

  • 作者单位

    Department of Mechanical and Industrial Engineering at Ryerson University, Toronto;

    Department of Mechanical and Industrial Engineering at Ryerson University, Toronto;

    Department of Mechanical and Industrial Engineering at Ryerson University, Toronto;

  • 收录信息
  • 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