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Influence of floor plenum on energy performance of buildings with UFAD systems

机译：地板通风系统对使用UFAD系统的建筑物的能源性能的影响

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摘要

The heat transfer through the floor slab in buildings with Under-Floor Air Distribution (UFAD) systems may have a negative impact on the energy performance of these buildings, although very few studies have been reported in the literature. By using an energy simulation program, EnergyPlus, this investigation compared the energy use in a Philadelphia office building with a UFAD system to that with a well-mixed ventilation system. When the heat transfer through the floor slab was taken into consideration, the thermal load of the building with the UFAD system was higher than with the well-mixed system. On the other hand, the higher supply air temperature of the UFAD system enables the use of more free-cooling. The annual energy consumption by the chillers in the building with the UFAD system was 16-27% lower than with the well-mixed system, but energy consumption by the boiler was 12-30% higher, and the energy consumption by the fan was 22-50% higher, depending on the manner in which the heat was supplied to the floor plenum. When the UFAD system was used with an un-ducted floor plenum and without heating coils under the diffusers, it consumed slightly more energy than the well-mixed system.
机译：尽管有文献报道很少，但是在采用地板下空气分配（UFAD）系统的建筑物中，通过楼板的热量传递可能会对这些建筑物的能源性能产生负面影响。通过使用能源模拟程序EnergyPlus，本次调查将费城办公楼中使用UFAD系统的能源使用与混合通风系统的能源使用进行了比较。当考虑到通过楼板的热传递时，UFAD系统的建筑物的热负荷高于混合均匀的系统。另一方面，UFAD系统的更高的送风温度可以使用更多的自然冷却。使用UFAD系统的建筑物中的冷水机组的年能耗比充分混合的系统低16-27％，但是锅炉的能耗高12-30％，而风扇的能耗为22高-50％，具体取决于向地板增压室供热的方式。当UFAD系统与不通气的地板通风系统一起使用且在扩散器下方没有加热线圈时，其能量消耗比充分混合的系统略多。

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  • 来源
    《Energy and Buildings》 |2014年第8期|74-83|共10页
  • 作者

    Yan Xue; Qingyan Chen;

  • 作者单位

    School of Mechanical Engineering. Purdue University, West Lafayette, IN 47907, USA;

    School of Mechanical Engineering. Purdue University, West Lafayette, IN 47907, USA,School of Environmental Science and Engineering, Tianjin University, Tianjin 300072, China;

  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    Underfloor air distribution; Energy simulation; Commercial buildings; Floor plenum;

    机译：地板下的空气分配;能源模拟;商业建筑;地板通风室;

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