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A Combined Low Temperature Water Heating System Consisting Of Radiators And Floor Heating

机译：散热器和地暖的组合式低温热水系统

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摘要

Space heating load is decreasing in modern Finnish apartments due to lower U -values of the construction, tight envelopes and heat recovery from exhaust ventilation air. This makes it possible to develop a new combined low temperature water heating system with nominal supply/return water temperatures of 45 ℃/35 ℃. Such a system includes radiators in rooms and floor heating in bathrooms.rnIn this study, the performance of an apartment building is determined by using dynamic simulation. The simulation results for the combined low temperature water heating system are compared with those for three conventional radiator and floor heating systems. The results show that the combined low temperature water heating system performs well and is able to maintain the zones within the required temperature levels. The thermal comfort analysis indicates that the drifts and ramps in operative temperature using the four studied heating systems are within the limits of Ashrae Standard 55-2004.rnTemperature measurements in a test room are carried out to find the vertical difference of air temperature using two methods: radiator heating and floor heating. These measurements indicate that there is only a small vertical temperature difference that would not produce any significant thermal discomfort.
机译：由于较低的建筑U值，紧凑的外壳以及从排气通风中回收的热量，现代芬兰公寓中的空间供暖负荷正在降低。这样就可以开发出一种新的组合式低温热水系统，其名义给水/回水温度为45℃/ 35℃。这样的系统包括房间中的散热器和浴室中的地板采暖。在这项研究中，公寓大楼的性能是通过动态模拟确定的。将组合式低温热水系统的仿真结果与三个常规散热器和地面加热系统的仿真结果进行了比较。结果表明，组合式低温热水系统运行良好，能够将区域保持在所需的温度范围内。热舒适性分析表明，使用四种研究的供暖系统的工作温度的漂移和斜率在Ashrae Standard 55-2004的限制内。rn在测试室中进行温度测量以找到两种方法的气温垂直差：散热器暖气和地板暖气。这些测量表明，只有很小的垂直温度差，不会产生任何明显的热不适。

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  • 来源
    《Energy and Buildings》 |2009年第5期|470-470472-479|共9页
  • 作者

    Ala Hasan; Jarek Kurnitski; Kai Jokiranta;

  • 作者单位

    Helsinki University of Technology, Laboratory of Heating, Ventilating and Air Conditioning, P.O. Box 4400, F1N-02015 Hut, Finland;

    Helsinki University of Technology, Laboratory of Heating, Ventilating and Air Conditioning, P.O. Box 4400, F1N-02015 Hut, Finland;

    Helsinki University of Technology, Laboratory of Heating, Ventilating and Air Conditioning, P.O. Box 4400, F1N-02015 Hut, Finland;

  • 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

    low temperature heating; water radiator; floor heating; thermal comfort;

    机译：低温加热;散热器;地板采暖;热舒适性;

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