长江大通断面水空调适宜性分析  

Suitability analysis of water conditioning in Datong section of Yangtze River

作　　者：陆宝宏[1] 冯新月 羊艳 裴颖 孔彦龙[4] 沈文龙 宋杨 庞忠和[4] LU Baohong;FENG Xinyue;YANG Yan;PEI Ying;KONG Yanlong;SHEN Wenlong;SONG Yang;PANG Zhonghe(College of Hydrology and Water Resources,Hohai University,Nanjing 210098,China;Water resources and Hydropower Planning and Design General Institute,Beijing 100120,China;Anhui Water Resources and Hydropower Survey,Design and Research Institute Co.,Ltd.,Hefei 230088,China;Institute of Geology and Geophysics,Chinese Academy of Sciences,Beijing 100029,China)

机构地区：[1]河海大学水文水资源学院,南京210098 [2]水利部水利水电规划设计总院,北京100120 [3]安徽省水利水电勘测设计研究总院有限公司,合肥230088 [4]中国科学院地质与地球物理研究所,北京100029

出　　处：《科技导报》2023年第12期75-85,共11页Science & Technology Review

基　　金：国家自然科学基金长江水科学研究联合基金项目(U22402181009321);中国科学院学部咨询评议项目(2020-DX03-B-007)。

摘　　要：以长江大通水文站断面为例,开展长江地表水地热资源量研究。利用径流不均匀系数、Mann-Kendall法、滑动T检验法等方法,探讨了大通站水文情势变化,发现大通断面流量的集中期在7月上旬,多年平均径流量为9.05×10^(11)m3;分析了长江大通断面2004—2021年气温及水温实测资料,发现月均最低、最高气温分别在1月与7月,多年平均水温为18.9℃,水温低于5℃天数为1.5天,较适宜采用容积式地表水制热/冷机组。选取11月至翌年2月为制热月份、6月至9月为制冷月份,依据气温与水温的温差分别计算制热和制冷月份的地热资源总量分别为3.08×10^(18)J、1.67×10^(18)J;根据水温变化控制阈值,计算出仅大通水文站一个断面制热与制冷月份的可采地热资源量分别为1.28×10^(17)J、6.71×10^(17)J,总的可采地热资源量相当于减排CO_(2)约16604万t。As a kind of building heating and cooling technology,surface water source heat pump(commonly known as"water-cooled air-conditioning")technology has been applied gradually.It provides a new way to solve the problem of refrigeration(heat)in the hot summer and cold winter areas south of the policy heating line in China.The heat energy project using the Yangtze River water is developing in scale.But theoretical research on resource potential,utilization conditions and environmental effects has not kept up.In order to study the geothermal resources contained in the Yangtze River water source,the Datong Station of Yangtze river was selected as the representative section.The means of non-uniformity coefficient of runoff,Mann-Kendall method and the moving T-test method were used to analyze the hydrological regime of the Datong Station.The average annual runoff of Datong station was calculated as 905.36 billion cubic meters,and the concentration of water flow occurs in early July.According to the data of air temperature and water temperature from 2004 to 2021,it is concluded that the monthly average temperature is the highest in July and the lowest in January.The annual average water temperature is 18.9℃,and the annual average of the days when the water temperature is lower than 5℃is 1.5 days.Therefore,it is suitable to use volumetric surface water units for heating/cooling.The water quality of Datong section is above Class II,so it meets the standard.To sum up,the water quantity,temperature and quality are suitable for the development and utilization of geothermal energy from river sources.On this basis,according to the temperature difference between air temperature and water temperature,the total geothermal resources of Datong Station are calculated as 3.08×10^(18)J from November to February and 1.67×10^(18)J from June to September.According to the control threshold of water temperature variation in the next section,the recoverable resources were calculated as 1.28×10^(18)J from November to February and 6.71×10^

关 键 词：江水源地热能 长江大通断面 可采资源量 碳减排 

分 类 号：P314[天文地球—固体地球物理学]