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Energy analysis of a hybrid radiant cooling system under hot and humid climates: A case study at Shanghai in China

机译：湿热气候下混合辐射冷却系统的能量分析：以中国上海为例

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摘要

A conventional radiant panel system offers advantages in terms of energy savings; however, compared with an all-air system, it has limitations such as moisture condensation risk, slow air movement, difficult space zoning, slow air pollutants removal from a highly polluted room, and time delay in start-up of the radiant panel system. This research performs an energy consumption analysis of a hybrid radiant cooling system for buildings in summer. The hybrid radiant cooling system combines a typical radiant panel with a decentralized air convector connected in series. The hybrid radiant panel system generates additional cooling output through its air convector, dehumidifies indoor air, increases indoor air movements, and reduces the time delay in start-up and a filter in the air convector removes air pollutants. This study exhibits the energy performance of the hybrid radiant cooling system compared with an all air system and a typical radiant panel system via numerical modeling using experimental data. This hybrid radiant panel system is effective for energy-saving, because it has a higher cooling impact ratio, and larger coefficient of performance of the chiller, and because the air movement increases the offset effect of the operation indoor temperature rise by an enhanced mixed convection effect. Thus it can reduce cooling energy consumption. The hybrid radiant cooling system can be used very effectively for saving energy in the summer season.
机译：常规的辐射板系统在节能方面具有优势。但是，与全空气系统相比，它具有局限性，例如湿气凝结的风险，空气流动缓慢，空间分区困难，从高度污染的房间中清除空气污染物的速度较慢以及辐射面板系统启动的时间延迟。这项研究对夏季混合辐射冷却系统的能耗进行了分析。混合辐射冷却系统将典型的辐射面板与分散连接的对流空气混合在一起。混合辐射板系统通过其空气对流器产生额外的冷却输出，为室内空气除湿，增加室内空气的流动，并减少启动时间的延迟，并且空气对流器中的过滤器去除了空气污染物。这项研究通过使用实验数据进行数值建模，展示了混合辐射冷却系统与全空气系统和典型辐射面板系统相比的能源性能。这种混合式辐射板系统具有节能效果，因为它具有更高的制冷冲击比和更大的冷却器性能系数，并且由于空气流动通过增强的混合对流而增加了操作室内温度升高的抵消效果。影响。因此，它可以减少冷却能耗。混合辐射冷却系统可以非常有效地用于夏季的节能。

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  • 来源
    《Building and Environment》 |2018年第6期|208-214|共7页
  • 作者

    Kim Moon Keun; Liu Jiying; Cao Shi-Jie;

  • 作者单位

    Xian Jiaotong Liverpool Univ, Dept Architecture, Suzhou 215123, Peoples R China;

    Shandong Jianzhu Univ, Sch Thermal Engn, Jinan 250101, Shandong, Peoples R China;

    Guangzhou Univ, Sch Civil Engn, Guangzhou 510006, Guangdong, Peoples R China;

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