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Energy Performance Optimization Of Radiant Slab Cooling Using Building Simulation And Field Measurements

机译：利用建筑物模拟和现场测量优化辐射板式冷却的能源性能

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摘要

Few field studies of energy performance of radiant cooling systems have been undertaken. A recently constructed 17,500 m~2 building with a multi-floor radiant slab cooling system in the tower was investigated through simulation calibrated with measured building energy use and meteorological data. For the very cold, dry region where the building was located, it was found that a typical floor of the tower would have had 30% lower annual energy use with a conventional variable air volume system than with the as-built radiant cooling-variable air volume combination. This was due to (1) simultaneous heating and cooling by the existing radiant cooling and air systems, (2) the large amount of free cooling possible in this climate, and (3) suboptimal control settings. If these issues were remedied and combined with improved envelope and a dedicated outdoor air system with exhaust air heat recovery, a typical floor could achieve annual energy use 80% lower than a typical floor of the existing building HVAC system. This shows that radiant thermal control can make a significant contribution to energy-efficiency, but only if the building design and operating practices complement the strengths of the radiant system.
机译：很少进行辐射冷却系统能量性能的现场研究。通过使用测量的建筑能耗和气象数据对模拟进行校准，研究了一座新近建造的17,500 m〜2建筑物，该建筑物在塔中带有多层辐射板冷却系统。对于建筑物所在的非常寒冷干燥的地区，发现使用传统的可变风量系统，与采用辐射冷却可变空气的情况相比，典型的塔楼每年的能源消耗要低30％音量组合。这是由于（1）通过现有的辐射冷却和空气系统同时进行加热和冷却，（2）在这种气候下可能进行的大量免费冷却，以及（3）最佳控制设置。如果这些问题得到纠正，再加上改善的围护结构和具有废气热回收功能的专用室外空气系统，那么典型的地板每年可实现的能耗比现有建筑HVAC系统的典型地板低80％。这表明，辐射热控制可以极大地提高能效，但前提是建筑物的设计和操作实践必须补充辐射系统的优势。

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