摘要
土坝中热虹吸管内的对流作用对维持其稳定性具有积极的作用,而寒区低水头土坝的稳定性研究对于灌溉系统具有重要的影响,也对国家农业经济的发展具有重大的意义。在同一地质条件下,通过对不同环境内的热虹吸管内部制冷剂的温度进行监测,指出在同一环境条件下,分别在N3和N4这两组热虹吸管的地表以下1.5m处、热虹吸管底部、地表以上热交换器的顶部和底部4处安装了温度传感器,对虹吸管内的制冷剂进行温度监测,实验数据表明两热虹吸管温度存在偏差,证实热虹吸管中存在对流。但是在温度低于0℃时热虹吸管中才开始产生对流,夏季时在季节性融化层以下,热虹吸管中没有对流。
The convection in the thermosyphon in the earth dam has a positive effect on maintaining its stability,while the study of the stability of the low-head earth dam in the cold region has an important impact on the irrigation system and is of great significance to the development of the national agricultural economy.Under the same geological conditions,the temperature of the refrigerant inside the thermosyphon in different environments was monitored,it is pointed out that temperature sensors are installed at the bottom of the thermosyphon at the bottom of the thermosyphon and at the top and bottom of the heat exchangers above the surface at 1.5 mbelow the surface of N3 and N4 respectively under the same environmental conditions.The temperature of the refrigerant in the siphon is monitored.The experimental data show that there is a deviation in the temperature of the two thermosyphons and the convection exists in the thermosyphon.However,the convection in the thermosyphon begins to occur only when the temperature is below 0 ℃,and no convection occurs in the thermosyphon in the summer below the seasonal melting layer.
作者
鲁道夫.弗拉基米罗维奇.张
戴长雷
李卉玉
于淼
赵伟静
Rudolf Vladimirovich Zhang, DAI Changlei, LI Huiyu, YU Miao, ZHAO Weijing(1. Melnikov Permafrost Institute Siberia Branch of the Russian Academy of Sciences, Yakutsk 677010, Russia;2. Institute of Groundwater tn Cold Region , Heilongjiang University , Harbin 150080, China;3. School of Hydraulics Electric-power, Heilongjiang University , Harbin 150080, China ;4. Sino Russian cold region hydrology and Water Conservancy Engineering Join, laboratory , Heilongjiang University , Harbin 150080, China; 5. Heilongjiang Province Academy of Cold Area Bulding Research , Harbin 150080, Chin)
出处
《水利科学与寒区工程》
2018年第3期13-17,共5页
Hydro Science And Cold Zone Engineering
基金
冻土工程国家重点实验室开放基金(SKLFSE201310)
黑龙江省水利科技项目(201401)
关键词
热虹吸管
对流
温度
土坝
寒区
西伯利亚
thermal siphon
convection
temperature
earthdam
cold region
Siberia
