不同加热模式下深孔热交换器加热系统的性能评估

Chao Zhu, Peng Shi, Tuo Zhang, Zhuang Li, Chen Quan, Feng Li, Qing Xia
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引用次数: 0

摘要

随着向可再生能源的过渡,特别是在我们摒弃化石燃料的过程中,深孔热交换器(DBHE)耦合热泵供热技术也在不断发展。本文以 DBHE 供热系统中循环流体的换热特性为基础,阐明了该系统的设置形式,并阐明了其对取热性能的影响。经过分析和研究,可以得出结论:与耦合热泵和耦合板式换热器模式相比,直供模式的水温下降更为明显。加热结束时的进出口水温分别为 9.98°C 和 16°C。直供模式和耦合板式热交换器模式的进出口水温相似,在温度为 7°C 时分别为 19.6°C 和 25.5°C。热泵不仅增强了地源热泵(GSHP)供热系统的热交换功能,还确定了 DBHE 的取热性能配置。耦合板式换热器模式下的系统功耗低于热泵模式,有利于系统稳定运行。因此,DBHE 供热系统的最佳设计形式是热泵耦合板式换热器模式。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Performance assessment of deep borehole heat exchanger heating system under different heating modes
With the transition towards renewable energy sources, particularly as we move away from fossil fuels, there has been a constant evolution of deep borehole heat exchanger (DBHE) coupled heat pump heating technology. On the basis of the heat-exchanging properties of circulating fluid in the DBHE heating system, this paper clarifies the setup forms of this system, and elucidates the influence of heat extraction performance. After analysis and research, it can be concluded that the direct supply mode shows a more prominent decline in water temperature compared to the coupled heat pump and coupled plate heat exchanger modes. The imported and exported water temperatures when heating ends were recorded as 9.98°C and 16°C, respectively. The imported and exported water temperatures for both the direct supply and the coupled plate heat exchanger modes tend to be similar at 19.6°C and 25.5°C at a temperature of 7°C. Heat pump not only enhances the heat exchange features of ground source heat pump (GSHP) heating system, but also defines the configuration of heat extraction performance of DBHE. The system power consumption in the coupled plate heat exchanger mode is lower than that in the heat pump mode which is conducive to stable operation. Therefore, the best design form of the DBHE Heating System is the heat pump coupled plate exchange mode.
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