To evaluate long-term temperature changes caused by the operation of a geothermal heat pump (GHP) system, temperatures near borehole heat exchangers (BHEs) of the GHP system in Korea were measured. The temperature measurements showed increasing rates of 0.135 °C/year at a depth of 10 m and 0.118 °C/year at a depth of 50 m for approximately 10 years. Simulations for the analysis of climate change effects on measured temperature fluctuations showed that a rate of temperature increase was 0.010 °C/year at a depth of 50 m owing to changes in surface air temperatures (SATs). From two-dimensional heat transfer simulations, the discharged heat measuring 16.7 W/m in the cooling season and extracted heat measuring 12.4 W/m in the heating season could cause an annual mean temperature increase of 0.109 °C over approximately 10 years. Additionally, results of simulations for future prediction of ground temperatures assuming that the GHP system retains its level of operation showed that in 2050, temperature at a depth of 50 m will increase by approximately 3.00 °C from that in 2005. Thus, balancing the heat discharged into and extracted from the ground by considering climate change to minimize long-term changes in the ground temperature is necessary.

中文翻译：

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通过地热热泵系统的运行和韩国气候变化评估地温变化

为了评估由地热热泵 (GHP) 系统运行引起的长期温度变化，测量了韩国地热热泵 (GHP) 系统钻孔换热器 (BHE) 附近的温度。温度测量结果显示，在大约 10 年的时间里，10 m 深度处以 0.135 °C/年的速度增加，50 m 处以 0.118 °C/年的速度增加。用于分析气候变化对实测温度波动影响的模拟表明，由于地表气温 (SAT) 的变化，50 m 深处的温度上升率为 0.010 °C/年。从二维传热模拟来看，冷却季节排出的热量为 16.7 W/m，采暖季节的提取热量为 12.4 W/m，可能导致大约 10 年的年平均温度升高 0.109 °C。此外，