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Heat Transfer Research of a New Type of Radiant Floor Heating System

机译：一种新型辐射地板加热系统的传热研究

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摘要

In China, the energy policy of switching charcoal heating to electric heating is pushing hard. Radiant floor heating system (RFHS) with air-source heat pump system is considered to be a suitable scheme for energy retrofit. A new type of lightweight RFHS with the aluminum layer is put forward in this article, which has the benefit of lowering the supply water temperature by enhancing the heat transfer performance and homogenizing the floor surface temperature distribution. The theoretical model of the new lightweight RFHS is built and solved by the Matlab program. Experiments are conducted to study the thermal performance of the RFHS and verify the theoretical model. The effects of supply water temperature and water flow velocity on the thermal performances of the new RFHS are studied. Then, the effects of aluminum layer on the heat transfer performance of the new system are researched. Finally, comparative research of the new lightweight RFHS and traditional heavy RFHS is carried out. The results show that the average floor surface temperature, heat transfer rate, and annual exploitation cost of the new RFHS are all better than the traditional one.
机译：在中国，将木炭加热切换到电加热的能源政策正在推动。具有空气源热泵系统的辐射地板加热系统（RFHS）被认为是能量改造的合适方案。本文提出了一种具有铝层的新型轻量级RFHS，这具有通过提高传热性能并使地板表面温度分布均匀化的供水温度降低供水温度。 Matlab程序建立和解决了新的轻量级RFH的理论模型。进行实验以研究RFH的热性能并验证理论模型。研究了供水温度和水流速度对新RFH的热性能的影响。然后，研究了铝层对新系统的传热性能的影响。最后，进行了新的轻量级RFHS和传统重型RFH的比较研究。结果表明，新RFHS的平均楼层表面温度，传热速率和年开采成本都比传统的水平更好。

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  • 来源
    《Heat Transfer Engineering》 |2020年第18期|1626-1641|共16页
  • 作者

    Minzhang Liu; Huan Zhang; Wandong Zheng; Shijun You;

  • 作者单位

    School of Environmental Science and Engineering Tianjin University Tianjin China;

    School of Environmental Science and Engineering Tianjin University Tianjin China Key Laboratory of Efficient Utilization of Low and Medium Grade Energy (Tianjin University) Ministry of Education of China Tianjin China;

    School of Environmental Science and Engineering Tianjin University Tianjin China Key Laboratory of Efficient Utilization of Low and Medium Grade Energy (Tianjin University) Ministry of Education of China Tianjin China;

    School of Environmental Science and Engineering Tianjin University Tianjin China Key Laboratory of Efficient Utilization of Low and Medium Grade Energy (Tianjin University) Ministry of Education of China Tianjin China;

  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);美国《生物学医学文摘》(MEDLINE);
  • 原文格式 PDF
  • 正文语种 eng
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