龙岛地源热泵适宜性研究

Study on Suitability of Longdao Ground Source Heat Pump

砂质海岛作为兼具陆域、海域特征的特殊地貌单元,生态环境条件特殊,资源环境承载压力大。本文以河北省唐山市龙岛为研究区,综合确定该岛为浅层地温资源应用适宜区,开展了砂质海岛不同工况热响应试验,经计算:龙岛130 m以浅地层内夏季工况(供水温度约33℃)换热能力为63.76 W/m,冬季工况(供水温度约6℃)换热能力为34.75 W/m,浅层地热容量为1.84×10^(12)kJ/℃,并从设计参数推荐、施工建议等方面提出了砂质海岛地区地源热泵开发利用的工程建议。本文研究成果对砂质海岛浅层地热科学研究、高效利用具有借鉴意义,将有助于沿海地区双碳目标的早日实现。

As a special geomorphic unit with both land and sea characteristics,sandy islands have special ecological and environmental conditions and great pressure on resources and environment.Taking Tangshan Longdao in Hebei Province as the research area,this paper comprehensively determined that the island was the suitable area for the application of shallow geothermal resources,and carried out the thermal response test of Sandy Island under different working conditions.The calculation showed that the heat transfer capacity of Longdao in summer(water supply temperature was about 33℃)was 63.76 W/m,the heat transfer capacity of Longdao in winter(water supply temperature was about 6℃)was 34.75 W/m,and the shallow geothermal capacity was 1.84×10^(12) kJ/℃ The engineering suggestions for the development and utilization of ground source heat pump in Sandy Island area are put forward.The research results of this paper have reference significance for the scientific research and efficient utilization of shallow geothermal in sandy islands,and will contribute to the early realization of the dual carbon target in coastal areas.