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Comparison between Experiment and Simulation for the Development of a Tri-generation System using Photovoltaic-thermal and Ground Source Heat Pump
Energy and Buildings ( IF 6.7 ) Pub Date : 2020-11-18 , DOI: 10.1016/j.enbuild.2020.110623
Sangmu Bae , Yujin Nam

In order to develop a more accurate photovoltaic–thermal collector and ground source heat pump integrated simulation model, it is necessary to consider the operation condition assumed in real situations, such as partial load of system, energy use situation, or energy production condition. Furthermore, the integrated simulation model should be verified by measurement data based on real-scale experiment. Therefore, in this study, we constructed a demonstration plant considering the real application for a residential house, and installed a monitoring system that could measure detailed operation situations, such as weather conditions, heat source temperatures, and individual system performance. The integrated simulation model was composed of a Photovoltaic–thermal collector model, a ground heat exchanger model, a heat pump model, a building load model, and a controller model. The error rate between the monitoring result and the integrated simulation model was determined. This was used to verify the prediction accuracy of the integrated simulation model. The coefficient of variation of root mean square error (CV(RMSE)) for the heat pump coefficient of performance (COP) and system coefficient of performance were calculated as 19.2% and 14.8%, respectively. In addition, the error rates of the PVT collector and the heat pump relative to the daily heat exchange rate (HER) were calculated to be less than 30 %, respectively, while the error rate of the integrated simulation model satisfied ASHRAE Guideline 14-2014. Moreover, the long-term performance of the system was analyzed through the integrated simulation model considering the weather condition of Seoul. The annual COP of the system was calculated to be 4.03.



中文翻译:

光伏热电与地源热泵三代系统开发实验与仿真的比较

为了开发更准确的光伏-集热器和地源热泵集成仿真模型,有必要考虑实际情况下假设的运行条件,例如系统的部分负荷,能源使用情况或能源生产条件。此外,集成仿真模型应通过基于真实实验的测量数据进行验证。因此,在这项研究中,我们考虑到了住宅的实际应用,建造了一个示范工厂,并安装了一个监视系统,该系统可以测量详细的运行情况,例如天气状况,热源温度和单个系统的性能。集成的仿真模型由光伏集热器模型,地面热交换器模型,热泵模型,建筑物负荷模型,和控制器模型。确定了监测结果与集成仿真模型之间的错误率。这用于验证集成仿真模型的预测准确性。计算出的热泵性能系数(COP)和系统性能系数的均方根误差(CV(RMSE))的变异系数分别为19.2%和14.8%。此外,计算得出的PVT收集器和热泵的错误率相对于每日热交换率(HER)分别小于30%,而集成仿真模型的错误率满足ASHRAE指南14-2014 。此外,通过综合仿真模型考虑了首尔的天气状况,分析了系统的长期性能。

更新日期:2020-11-18
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