CAJ | 학술논문

为探讨地源热泵系统垂直埋管换热器运行对地表温度的影响，采用数值模拟的方法，基于一定的覆土厚度，结合不同工况下的埋管负荷，建立了地下土壤、钻孔、覆土与外界环境之间的传热模型，对埋管运行期覆土层温度场的变化进行了分析，并对地表温度随覆土厚度的变化规律进行了研究。结果表明，在地埋管的连续换热作用下，埋管周围土壤温度显著变化，且越接近钻孔中心，温度变化幅度越大；钻孔顶部覆土层温度局部变化，随着覆土厚度增加，温差递减；地表温度变化范围及上升幅度与埋管换热量成正比，与覆土厚度成反比；增加覆土层厚度能有效减缓地埋管换热对地表温度造成的热影响，有利于管群区域的红外伪装。
위탐토지원열빙계통수직매관환열기운행대지표온도적영향，채용수치모의적방법，기우일정적복토후도，결합불동공황하적매관부하，건립료지하토양、찬공、복토여외계배경지간적전열모형，대매관운행기복토층온도장적변화진행료분석，병대지표온도수복토후도적변화규률진행료연구。결과표명，재지매관적련속환열작용하，매관주위토양온도현저변화，차월접근찬공중심，온도변화폭도월대；찬공정부복토층온도국부변화，수착복토후도증가，온차체감；지표온도변화범위급상승폭도여매관환열량성정비，여복토후도성반비；증가복토층후도능유효감완지매관환열대지표온도조성적열영향，유리우관군구역적홍외위장。
To discuss the effects of land surface temperature with vertical buried pipe heat exchanger,heat model of under soil, borehole, cover soil and external environment was established by numerical simulation based on the thickness of cover soil,the temperature variation of cover soil in run-time is analyzed,and the temperature variation of land surface with thickness of cover soil discussed. The results show that with the system being operated continu-ously,the soil temperature around the pipe changes significantly,and the closer to the drilling center,the higher the temperature changes. At the top of the hole,the temperature of cover soil changes,and with the increasing of the thickness of cover soil, the temperature decreases. The range of variation and the ascensional range of land surface temperature are proportional to the heat exchange capacity,and inversely proportional to the thickness of cover soil. Increasing the thickness of cover soil could effectively lower the effect of buried tube heat transfer on land surface temperature. It would help to avoid the infrared exposure of pipes.