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Simulation and optimization of the operation strategy of ASHP heating system: A case study in Tianjin

机译：ASHP加热系统运行策略的仿真与优化 - 以天津为例

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摘要

Air-source heat pump (ASHP) has been widely applied in heating systems of school buildings. In order to achieve building energy efficiency while ensuring indoor thermal comfort, the paper compared the effects of different operation strategies including intermittent heating mode in non-working hours and setpoint of return water temperature in working hours. A middle school building in Tianjin, China is chosen as a case study and its physical model is developed by using the EnergyPlus tool. After verifying the validity of the model, the article simulated 64 different operation conditions produced by combining 8 start-up times with 8 return water temperature setpoints to find a better operation mode of the intermittent heating. Results indicate that running at a lower water temperature with an earlier start-up time is more energy efficient compared with running at a higher water temperature with a later start-up time while meeting the thermal comfort requirement. In addition, by changing the return water temperature setpoints hourly based on the outdoor air temperatures, the situation of overheating and undercooling during working hours has been well improved and the energy saving rate is about 17% during the entire heating season. (C) 2020 Elsevier B.V. All rights reserved.
机译：空气源热泵（ASHP）已广泛应用于学校建筑的加热系统。为了实现建筑能效，同时确保室内热舒适度，纸张比较了不同操作策略在工作时间内的间歇加热模式以及在工作时间的回水温度设定的间歇加热模式。中国天津的中学大楼被选为案例研究，通过使用EnergyPlus工具开发了其物理模型。在验证模型的有效性之后，文章模拟了通过将8个启动时间与8个返回水温设定点组合产生的64种不同的操作条件，以找到更好的间歇加热的操作模式。结果表明，在较早的初始启动时间的情况下，在较高的水温下与较高的初始启动时间相比，在较高的初始启动时间下运行更节能，同时满足热舒适性要求。此外，通过根据室外空气温度调节返回水温设定点，在工作时间内过热和过冷却的情况得到良好提高，整个加热季节的节能率约为17％。 （c）2020 Elsevier B.v.保留所有权利。

著录项

  • 来源
    《Energy and Buildings》 |2020年第11期|110349.1-110349.11|共11页
  • 作者

    Ling Jihong; Tong Hui; Xing Jincheng; Zhao Yuxin;

  • 作者单位

    Tianjin Univ Sch Environm Sci & Engn Tianjin Peoples R China|Tianjin Univ Sch Environm Sci & Engn Tianjin Key Lab Indoor Air Environm Qual Control Tianjin 300350 Peoples R China|Tianjin Univ Tianjin Key Lab Built Environm & Energy Applicat Tianjin 300350 Peoples R China;

    Tianjin Univ Sch Environm Sci & Engn Tianjin Peoples R China;

    Tianjin Univ Sch Environm Sci & Engn Tianjin Peoples R China|Tianjin Univ Tianjin Key Lab Built Environm & Energy Applicat Tianjin 300350 Peoples R China;

    Tianjin Univ Sch Environm Sci & Engn Tianjin Peoples R 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

    Air-source heat pump (ASHP); School buildings; Intermittent heating; Thermal comfort;

    机译：空气源热泵（ASHP）;学校建筑;间歇加热;热舒适;

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