地热水井井口温度的计算

Calculation of Well Head Temperature of Geothermal Water Well

水是地热能利用的载体．根据二维半无限大垂直埋管表面的稳态放热模型及牛顿换热公式，推导出地热水井在不同深处的垂直管道外表到周围介质的外部放热系数．通过实例计算了林甸地区浅部岩石热导率值，并对该热导率值进行了验证．根据输液管道节点温度的舒霍夫计算公式，以１０ｍ为步长，用逐步迭代的方法。

Water is the carrying agent of making use of geothermal energy. On the basis of model of steady state of two dimensional semi infinite vertically buried tube and Newton exchange heat formula, the outside heat release coefficient is deduced from vertical tube in different depth of geothermal water well to ambient medium. The shallow rock heat conductivity value of Lindian Region is calculated by examples. And this value is tested and verified .According to the formula that calculates node temperature in tube engineering, calculation process for well head temperature of geothermal water well is provided by iterative method whose step is 10 m.