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首页> 外文期刊>Building and Environment >On-site measurement of the thermal performance of a novel ventilated thermal storage heating floor in a nearly zero energy building
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On-site measurement of the thermal performance of a novel ventilated thermal storage heating floor in a nearly zero energy building

机译：现场测量在近零能量建筑中新型通风热储存加热地板的热性能

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摘要

The nearly zero energy building (NZEB) is known for the low energy demand and better thermal insulation, thus it is promising to explore the thermal storage potential, and the flexible thermal storage characteristics. In this research, a novel floor integrated with thermal storage enhancement material - micro encapsulated phase change material (PCM), and the ventilation loops, is built in a demonstrated NZEB. A contrast floor with the same ventilation system, but is made of common concrete, is also built in another room with the same envelope. The impacts of solar radiation, PCM and ventilation on thermal storage and space heating performance are investigated by conducting a series of experiments. The results show that for the floor with PCM, the thermal storage capacity is increased by about 77.36%, and the thermal stability of space is also improved. Ventilation can increase both the peak and minimum air temperature by more than 0.5 degrees C as compared to the case without ventilation. Besides, under the current experimental conditions, ventilation can also significantly increase the space heating and cooling rates by more than 16.7% and 12.6%, respectively, which is meaningful for the flexible operation of the heating systems. In the last, it is found out that solar radiation can increase the space air temperature by more than 3.0 degrees C in PCM room in the daytime, and the space air temperature at night is also increased by about 0.3 degrees C if ventilation system works at night.
机译：近零能量建筑（NEZEB）以低能量需求和更好的隔热而闻名，因此有希望探索热存储电位和柔性的热存储特性。在本研究中，一种与热储存增强材料 - 微封装相变材料（PCM）集成的新型地板，以及通风环，建于显示的NEEB。具有相同通风系统的对比地板，但由普通混凝土制成，也是在另一个具有相同信封的另一个房间内建造。通过进行一系列实验，研究了太阳辐射，PCM和通风对热储存和空间加热性能的影响。结果表明，对于具有PCM的地板，热存储容量增加约77.36％，空间的热稳定性也得到改善。与没有通风的情况相比，通风可以通过0.5℃增加峰值和最小空气温度。此外，在目前的实验条件下，通风也可以显着增加空间加热和冷却速率分别超过16.7％和12.6％，这对于加热系统的灵活操作是有意义的。在最后，发现太阳辐射可以在白天在PCM室内的3.0摄氏度增加3.0摄氏度，如果通风系统在工作时，夜间的空气温度也增加了约0.3摄氏度夜晚。

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  • 来源
    《Building and Environment》 |2021年第8期|107993.1-107993.13|共13页
  • 作者

    Guo Jiwei; Dong Jiankai; Wang Hongjue; Jiang Yiqiang; Tao Jin;

  • 作者单位

    Harbin Inst Technol Sch Architecture Harbin Heilongjiang Peoples R China|Minist Ind & Informat Technol Key Lab Cold Reg Urban & Rural Human Settlement E Beijing Peoples R China;

    Harbin Inst Technol Sch Architecture Harbin Heilongjiang Peoples R China|Minist Ind & Informat Technol Key Lab Cold Reg Urban & Rural Human Settlement E Beijing Peoples R China;

    Harbin Inst Technol Sch Architecture Harbin Heilongjiang Peoples R China|Minist Ind & Informat Technol Key Lab Cold Reg Urban & Rural Human Settlement E Beijing Peoples R China;

    Harbin Inst Technol Sch Architecture Harbin Heilongjiang Peoples R China|Minist Ind & Informat Technol Key Lab Cold Reg Urban & Rural Human Settlement E Beijing Peoples R China;

    Jilin Univ Architecture & Technol Changchun Jilin Peoples R China;

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  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    Nearly zero energy building; Ventilated floor; Thermal conditioning; Phase change material; Solar radiation; Thermal extraction;

    机译：近零能量建筑;通风地板;热调节;相变材料;太阳辐射;热提取;

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