Long-Term Operation Analysis of a Ground Source Heat Pump with an Air Source Heat Pump as an Auxiliary Heat Source in a Warm Region
Long-Term Operation Analysis of a Ground Source Heat Pump with an Air Source Heat Pump as an Auxiliary Heat Source in a Warm Region
复制标题
以空气源热泵为辅助热源的地源热泵在温暖地区的长期运行分析
DOI：
10.1016/j.enbuild.2023.113050
复制
发表时间：
2023
影响因子：
6.7
通讯作者：
M. Yoshinaga
中科院分区：
文献类型：
--
作者：
Chika Kaneko;M. Yoshinaga
随着实现碳中和的迫切需要，人们对地源热泵（GSHP）系统的期望越来越高。本研究分析了日本温暖地区一所大学安装的 GSHP 与模块化地源热泵 (ASHP) 相结合的长期运行性能。因此，在较温暖的地区，由于冷负荷往往大于热负荷，并且地源热泵产生的电能消耗热量会添加到向地面的排热中，因此地热平衡比在寒冷地区更容易失衡。在冷却期间，主要拒绝进入地下以从地下提取导致地温升高和地源热泵的 SCOP 降低。然而，一个季节冷负荷的减少会大大降低下一季节制冷期间的地温。由于模块式 ASHP 能够快速控制其热输出，因此它在 GSHP 输出控制之前意外地对 HVAC 负载波动做出反应。这降低了地源热泵的负载系数，并导致 ASHP 在极低负载下反复启动和停止。
With the urgent need to achieve carbon neutrality, there are growing expectations for ground source heat pump (GSHP) systems. This study analyzed the long-term operational performance of a GSHP in combination with a modular-type ground source heat pump (ASHP) installed at a university in a warmer region of Japan. As results, in warmer regions, as the cooling load tends to be greater than the heating load and the electrical consumption heat from the GSHP is added to the rejection heat to the ground, the ground heat balance is more likely to be unbalanced than it would be in colder regions. Predominant rejection into the ground for extraction from the ground resulted in an increase in ground temperature and a decrease in the SCOP of the GSHP during cooling periods. However, a decrease in the cooling load in one season considerably reduced the ground temperature during cooling in the following season. Because the module-type ASHP was able to quickly control its thermal output, it unexpectedly reacted HVAC load fluctuations before the GSHP output control. This lowered the load factor of the GSHP and caused the ASHP to start and stop repeatedly at extremely low loads.